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  #1   Report Post  
Edward Bridge
 
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Default why stereo Microphone?

I've come upon a stereo Sony ECM-999PR( part of a deal) Microphone
Question: what is the point of a Stereo mic? What is the best way for them
to be used?

I have matching Microphones (cad 100's) so is a Stereo Microphone's main
purpose for the person who doesn't have a pair of Matching Mic's?

A choir just asked me to record their concert tonight (for fun) and with
this portable dat I have, I don't know if I should use the Sony or cad's .
I won't have time to test it. The church is large and my Mic's will be 10
away from choir.


Thank you
Peace,
Ed Bridge
Brooklyn N.Y.
www.bridgeclassicalguitars.com


  #2   Report Post  
Scott Dorsey
 
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Edward Bridge wrote:
I've come upon a stereo Sony ECM-999PR( part of a deal) Microphone
Question: what is the point of a Stereo mic? What is the best way for them
to be used?


It's a coincident pair in one package.

I have matching Microphones (cad 100's) so is a Stereo Microphone's main
purpose for the person who doesn't have a pair of Matching Mic's?


Or for applications where you need to boom a microphone or otherwise set
it up in a configuration where using two mikes on a stereo bar would be
inconvenient. If you're hanging off the back of a motorcycle with a film
crew, you do not want to be dealing with a stereo bar.

A choir just asked me to record their concert tonight (for fun) and with
this portable dat I have, I don't know if I should use the Sony or cad's .
I won't have time to test it. The church is large and my Mic's will be 10
away from choir.


10 what?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
  #3   Report Post  
Laurence Payne
 
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:I've come upon a stereo Sony ECM-999PR( part of a deal) Microphone
Question: what is the point of a Stereo mic? What is the best way for them
to be used?

I have matching Microphones (cad 100's) so is a Stereo Microphone's main
purpose for the person who doesn't have a pair of Matching Mic's?

A choir just asked me to record their concert tonight (for fun) and with
this portable dat I have, I don't know if I should use the Sony or cad's .
I won't have time to test it. The church is large and my Mic's will be 10
away from choir.


There are many good ways to record in stereo. Two (or more) mics,
spaced in different ways. Some of the ways involve having the two
mics as near as possible in the same place, pointing different
directions. So why not mount two mic capsules in the same housing?
That's your stereo mic.

How to use it? Put it in front of the performance, pointing at it.
See if it sounds better or worse than your other options.

Which mic to use tomorrow is a no-brainer. You know your CAD units
work. The Sony is untested.

CubaseFAQ www.laurencepayne.co.uk/CubaseFAQ.htm
"Possibly the world's least impressive web site": George Perfect
  #4   Report Post  
Edward Bridge
 
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"Scott Dorsey" wrote in message
...
Edward Bridge wrote:
I've come upon a stereo Sony ECM-999PR( part of a deal) Microphone
Question: what is the point of a Stereo mic? What is the best way for

them
to be used?


It's a coincident pair in one package.

I have matching Microphones (cad 100's) so is a Stereo Microphone's main
purpose for the person who doesn't have a pair of Matching Mic's?


Or for applications where you need to boom a microphone or otherwise set
it up in a configuration where using two mikes on a stereo bar would be
inconvenient. If you're hanging off the back of a motorcycle with a film
crew, you do not want to be dealing with a stereo bar.

A choir just asked me to record their concert tonight (for fun) and with
this portable dat I have, I don't know if I should use the Sony or cad's

..
I won't have time to test it. The church is large and my Mic's will be

10
away from choir.


10 what?



10 feet. . ( red in the face)

Ed


  #5   Report Post  
William Sommerwerck
 
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The advantage of a stereo mic (which can also be an MS omni/cardioid pair) is
that you have only one mic to mount. Such a mic is likely to give an
"acceptable" recording without a lot of fuss.

If you want a highly spacious sound, you might consider setting up your discrete
mics 10 or 12 apart. Such a decision should be based on the type of music and
what you think the listeners will like.




  #6   Report Post  
Geoff Wood
 
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Edward Bridge wrote:
I've come upon a stereo Sony ECM-999PR( part of a deal) Microphone
Question: what is the point of a Stereo mic?


Recording in stereo

What is the best way for
them to be used?


Point it at the music source.

I have matching Microphones (cad 100's) so is a Stereo Microphone's
main purpose for the person who doesn't have a pair of Matching
Mic's?


Or somebody who would prefer to carry one mic ( of known fixed
characteristics) around, rather than 2 separate mics plus associated
mouting hardware.


A choir just asked me to record their concert tonight (for fun) and
with this portable dat I have, I don't know if I should use the Sony
or cad's . I won't have time to test it. The church is large and my
Mic's will be 10 away from choir.


If you know and are familiar witht he CADs, use them if you prefer. Or try
the ECm and see how it compares .

Have fun !

geoff


  #7   Report Post  
Scott Dorsey
 
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Edward Bridge wrote:
.
I won't have time to test it. The church is large and my Mic's will be

10
away from choir.


10 what?


10 feet. . ( red in the face)


Umm... is there any way you can get farther back? If you are stuck up
that close you might consider a pair of baffled omnis, but you're still
going to hear individual voices rather than a choir unless it's a very
bright and wet room.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
  #8   Report Post  
David Satz
 
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William Sommerwerck wrote:

The advantage of a stereo mic (which can also be an MS omni/cardioid pair)
is that you have only one mic to mount. Such a mic is likely to give an
"acceptable" recording without a lot of fuss.

If you want a highly spacious sound, you might consider setting up your
discrete mics 10 or 12 apart. Such a decision should be based on the
type of music and what you think the listeners will like.


While I agree completely with these statements, it should perhaps be added
that one major advantage of a single-point stereo microphone is the mono
compatibility of the stereo recordings that can be made with it. Stereo
recordings made with spaced microphones often sound odd (e.g. pinched and
thin) when played back in mono.

(Not meaning to start a long-winded debate; both of us know both roles full
well. It's just a bit of info that the original poster may want to know,
is all.)
  #10   Report Post  
Edward Bridge
 
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"Scott Dorsey" wrote in message
...
Edward Bridge wrote:
.
I won't have time to test it. The church is large and my Mic's will

be
10
away from choir.

10 what?


10 feet. . ( red in the face)


Umm... is there any way you can get farther back? If you are stuck up
that close you might consider a pair of baffled omnis, but you're still
going to hear individual voices rather than a choir unless it's a very
bright and wet room.


Your right. I was more like 40 feet back , the organ was_ huge _ even for
old Brooklyn and the pipes were spead out in the front. I ask the conductor
were did he think the best placement was and he smile and said "thank you
for asking, use middle of the sanctuary. I learn conductors like to be ask
and I learn. Listening to the play back I still think to much organ but the
conductor was happy, which is good.

This is all new to me but I did'nt have top pay to hear choral music
Kodaly and Durufle and the wife and I had a nice date.

I used the cad's

Thank you
Ed





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Ricky W. Hunt
 
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"David Satz" wrote in message
m...

While I agree completely with these statements, it should perhaps be added
that one major advantage of a single-point stereo microphone is the mono
compatibility of the stereo recordings that can be made with it. Stereo
recordings made with spaced microphones often sound odd (e.g. pinched and
thin) when played back in mono.


I just happened to be reading about the latest inclusions in the National
Recording Registry and found this great statement:
http://www.loc.gov/rr/record/nrpb/nrpb-2003reg.html

#29 Rafael Kubelik conducting the Chicago Symphony Orchestra. Modest
Mussorgsky Pictures at an Exhibition. (1951)
1.. Prior to this LP, the first of Mercury's noted Living Presence series,
orchestras were recorded by a variety of multiple microphone methods, all
with artificial balances and few with concert hall ambience. The
Kubelik/Mussorgsky, recorded with a single Neumann U47 suspended above and
behind the conductor, was revolutionary in that for the first time, the
recorded balance was that of the orchestra, not a technician. This recording
is of such merit that many believe that the technical methodology has not
been improved upon to this day.


  #12   Report Post  
Edward Bridge
 
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"David Satz" wrote in message
m...
While I agree completely with these statements, it should perhaps be added
that one major advantage of a single-point stereo microphone is the mono
compatibility of the stereo recordings that can be made with it. Stereo
recordings made with spaced microphones often sound odd (e.g. pinched and
thin) when played back in mono.

(. It's just a bit of info that the original poster may want to know,
is all.)


Hey thanks, (original poster) you said "single-point stereo microphone is
the mono
compatibility of the stereo recordings that can be made with it" Well I'm
really "green " and I don't understand 100 percent what you're saying. ..
But I want to understand your point, does this have to do with what David
said about "Kubelik/Mussorgsky, recorded with a single Neumann U47 suspended
above and behind the conductor in that for the first time, the recorded
balance was that of the orchestra, not a technician ?"

Thanks
Ed


  #13   Report Post  
William Sommerwerck
 
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Hey thanks, (original poster) you said "single-point stereo microphone is
the mono
compatibility of the stereo recordings that can be made with it" Well I'm
really "green " and I don't understand 100 percent what you're saying. ..
But I want to understand your point, does this have to do with what David
said about "Kubelik/Mussorgsky, recorded with a single Neumann U47
suspended above and behind the conductor in that for the first time,
the recorded balance was that of the orchestra, not a technician ?"


It has nothing whatever to do with it.

The mono compatibility is wholly acoustic -- because recording at a single point
does not introduce arrival-time differences that cause combing effects in
mono -- and has nothing at all to do with the orchestra's ability to set its own
balances.

I've heard some of these early recordings, and they are very good -- for mono
recordings.

  #14   Report Post  
Scott Dorsey
 
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Edward Bridge wrote:

Hey thanks, (original poster) you said "single-point stereo microphone is
the mono
compatibility of the stereo recordings that can be made with it" Well I'm
really "green " and I don't understand 100 percent what you're saying. ..


Read the tutorial on stereophony on www.josephson.com. Stereo mikes are
normally coincident configurations in a package. This gives you good mono
compatibility, though no better than any other coincident pair.

But I want to understand your point, does this have to do with what David
said about "Kubelik/Mussorgsky, recorded with a single Neumann U47 suspended
above and behind the conductor in that for the first time, the recorded
balance was that of the orchestra, not a technician ?"


Not really.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
  #15   Report Post  
Ricky W. Hunt
 
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"Edward Bridge" wrote in message
news

But I want to understand your point, does this have to do with what David
said about "Kubelik/Mussorgsky, recorded with a single Neumann U47

suspended
above and behind the conductor in that for the first time, the recorded
balance was that of the orchestra, not a technician ?"


No. I stated that to show that we sometimes get hung up more on "science"
than sound.




  #16   Report Post  
David Satz
 
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Edward Bridge (the original poster in this thread) wrote:

Hey thanks, (original poster) you said "single-point stereo microphone
is the mono compatibility of the stereo recordings that can be made
with it" Well I'm really "green " and I don't understand 100 percent
what you're saying. ..


Sorry--A "mono-compatible" stereo recording can be played back in either
mono or stereo and still sound good. In fact it should sound essentially
the same either way, though of course the stereo playback should give you
a more nearly complete sense of spatiality, and some ability to localize
individual sound sources along the left-to-right axis.

This type of compatibility is _extremely_ hard to achieve with microphones
that are spaced apart from one another. The problem is basically that the
pickup from the separate microphones will conflict (subtract) about as much
as it adds. The result sounds pinched and thin, though people apparently
get used to it. (I'm not sure whether that's a good thing or not ...)

Nowadays mono compatibility is mainly considered important in radio, but
back when vinyl LPs ruled the marketplace, it was very important there,
too--not everyone had stereo record players, and the same records had to
be sold for both types of player. But even today more listening situations
than you might expect are mono, or at least not optimally set up for stereo,
so I think this is an issue that should be considered more widely (no pun
unintended) than it often is.


But I want to understand your point, does this have to do with what
David said about "Kubelik/Mussorgsky, recorded with a single Neumann
U47 suspended above and behind the conductor in that for the first
time, the recorded balance was that of the orchestra, not a technician?"


I'm going to disagree with the other responders and say that on one level
it does. The root issue is that when you mix the signals together from
multiple microphones that are placed apart, those signals will partially
reinforce one another and partially cancel each other whenever they are
picking up the same sound sources from different angles and distances.
A single-microphone approach to recording (whether in mono or stereo)
minimizes that type of cancellation, for direct sound at least.

The U 47 wasn't a stereo microphone, so a recording made with just one
of those would be a mono recording. However, substitute an AKG C 24 or
a Neumann SM 69 or a Schoeps CMTS 501 and choose suitable directional
patterns and you'd get a mono-compatible stereo recording (or perhaps
an M/S stereo recording) using the same basic approach. And that's
what the little Sony mike is offering, in a miniature form.

Of course it's important to consider how good or not good the microphone
actually sounds, in addition to its other properties--and there I'm afraid
that most Sony stereo mikes that I've ever used or heard are on the harsh
side. That could be because they are sold for mixed purposes--to record
both speech and music in reverberant settings. For most speech recording
it helps intelligibility of the result if the pickup is bright, present
and lacking in what musicians would call warmth or fullness. So it isn't
possible for one microphone to be well liked for both purposes.
  #17   Report Post  
Richard Crowley
 
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"Edward Bridge" wrote ...
Hey thanks, (original poster) you said "single-point stereo
microphone is the mono compatibility of the stereo recordings
that can be made with it" Well I'm really "green " and I don't
understand 100 percent what you're saying. ..


Mono compatibility is the ability of your recording to continue
to sound decent when played back on a monaural system (i.e.
where the Left and Right channels are mixed together). this is
frequently the case with television, and virtually always with
AM radio, elevator music, etc. etc. Some methods of recording
stereo sound horrid in mono, and others sound fine.

But I want to understand your point, does this have to do with
what David said about "Kubelik/Mussorgsky, recorded with a
single Neumann U47 suspended above and behind the conductor
in that for the first time, the recorded balance was that of the
orchestra, not a technician ?"


No. Microphone placement is an art that takes many factors
into account including the nature of the microphone, of the
sound source, the acoustics, the intent of the recording, etc etc.

In that quote, it would appear that they are claiming that placing
the microphone near the conductors ears would yield a recording
from the conductor's POV. Maybe a good thing, and maybe not,
(depending on the venue acoustics).

Many venues sound good only out in the audience and not so good
at the POV of the conductor (and, alas, some sound good only to
the conductor!) But good conductors have to take this into account
and "tune" their direction/performance for the house they are playing.


  #19   Report Post  
Laurence Payne
 
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On Mon, 10 May 2004 07:50:57 -0700, "Richard Crowley"
wrote:

In that quote, it would appear that they are claiming that placing
the microphone near the conductors ears would yield a recording
from the conductor's POV. Maybe a good thing, and maybe not,
(depending on the venue acoustics).


"Above and behind" it said. The conductor's position is far from
optimum, particularly if there's a soloist. His ears and brain can
compensate very efficiently. A microphone deserves more careful
positioning :-)

CubaseFAQ www.laurencepayne.co.uk/CubaseFAQ.htm
"Possibly the world's least impressive web site": George Perfect
  #20   Report Post  
Geoff Wood
 
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Laurence Payne wrote:

A friend did lots of commercial recording in the late 50s/60s. He
tells me it was standard practice to record twice, one for mono, one
for stereo.


So for stereo, the first take was the left channel, and the second take the
right ?!!!

;-)

geoff




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David Satz
 
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Laurence Payne wrote:

A friend did lots of commercial recording in the late 50s/60s. He
tells me it was standard practice to record twice, one for mono, one
for stereo. As he works in the jazz end of music, the two takes
could often be quite different (though not as different as some jazz
purists would have liked them to have been:-).


I can hardly think of any technical justification for this procedure
unless there was only one tape recorder available. It sounds as if
the players ought to have raised their fees so that the studio would
get both the mono and stereo versions recorded during the same take[s].

For the type of single-point pickup that the original poster was asking
about, the equivalent technique would be "mid-side" (M/S) recording. You
choose one microphone and place it wherever it would pick up the ideal
mono recording, and its output simply becomes the mono recording. But
at the same time you also place a sideways-facing figure-8 microphone
directly above or beneath the first microphone, and you record its signal
onto a second track. Then in playback you can matrix the two signals
together to get an authentic stereophonic recording which is compatible
with the mono recording--if, for example, a stereo LP made from this M/S
recording is played back on an FM radio station and received on a mono
radio, the signal should be identical (apart from any artifacts of the
broadcast and reception processes) with the original mono track.
  #22   Report Post  
William Sommerwerck
 
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A friend did lots of commercial recording in the late 50s/60s. He
tells me it was standard practice to record twice, one for mono, one
for stereo. As he works in the jazz end of music, the two takes
could often be quite different (though not as different as some jazz
purists would have liked them to have been:-).


I can hardly think of any technical justification for this procedure
unless there was only one tape recorder available. It sounds as if
the players ought to have raised their fees so that the studio would
get both the mono and stereo versions recorded during the same take[s].


There is a justification, and it's not technical.

If you're multi-miking, you can produce a "mono" or "stereo" mix from the same
multi-track recording.

But suppose you were obliged to record directly to mono (with one mic) or to
stereo (with two mics). Clearly, the layout of performers that would produce
good stereo spread and positioning would NOT be appropriate for a single-mic
mono recording.

  #24   Report Post  
Richard Crowley
 
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(David Satz) wrote:
I can hardly think of any technical justification for this procedure
unless there was only one tape recorder available. It sounds as if
the players ought to have raised their fees so that the studio would
get both the mono and stereo versions recorded during the same take[s].


"Chris Hornbeck" wrote ...
Why is this ringing a bell in my cortical stem? Were there ever
higher or even different rates for stereo recordings or am I just
as suggestible as usual?


I remember reading (in a column in the old "Audio" magazine?)
about how the NYC musician's local were demanding double-
rate for stereophonic recording because two mics and two tracks
were being used.


  #25   Report Post  
Scott Dorsey
 
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William Sommerwerck wrote:
A friend did lots of commercial recording in the late 50s/60s. He
tells me it was standard practice to record twice, one for mono, one
for stereo. As he works in the jazz end of music, the two takes
could often be quite different (though not as different as some jazz
purists would have liked them to have been:-).


I can hardly think of any technical justification for this procedure
unless there was only one tape recorder available. It sounds as if
the players ought to have raised their fees so that the studio would
get both the mono and stereo versions recorded during the same take[s].


There is a justification, and it's not technical.

If you're multi-miking, you can produce a "mono" or "stereo" mix from the same
multi-track recording.

But suppose you were obliged to record directly to mono (with one mic) or to
stereo (with two mics). Clearly, the layout of performers that would produce
good stereo spread and positioning would NOT be appropriate for a single-mic
mono recording.


Remember also that this was the era of wild and exaggerated stereo effects,
some of which did not have good mono compatibility at all. It was also an
era when AM radio broadcast in mono was extremely critical, even for jazz
and classical recordings.

This is why you see all those 45s with a mono mix on one side and a stereo
mix on the other.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."


  #27   Report Post  
William Sommerwerck
 
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If you can use an M-S stereo microphone setup and place it correctly,
the output of the mid mic will give a proper and well balanced mono
recording. Of course not every space is appropriate for M-S recording,
but back in "those" days, a good recording space was the most valuable
piece of gear any studio could have.


But would you simultaneously obtain a "good" stereo recording? As I suggested
originally -- probably not.

  #28   Report Post  
Kurt Albershardt
 
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Mike Rivers wrote:

Of course not every space is appropriate for M-S recording,
but back in "those" days, a good recording space was the most valuable
piece of gear any studio could have.


Some of us still think this way.


  #29   Report Post  
Scott Dorsey
 
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In article ,
Kurt Albershardt wrote:
Mike Rivers wrote:

Of course not every space is appropriate for M-S recording,
but back in "those" days, a good recording space was the most valuable
piece of gear any studio could have.


Some of us still think this way.


Sadly, too few of the customers do.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
  #31   Report Post  
William Sommerwerck
 
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If you can get a good stereo recording with an M-S setup, the mid mic
will give you a good mono recording. It works that way.


If you don't have a good balance from the mid mic without the side mic
added in, you won't have good stereo. But that means that the mic is
in the wrong place. If you have the mic placed correctly (good mono)
and can't get good stereo, the room or the source isn't appropriate
for using M-S and you should use another technique.


Not necessarily. Spreading out the instruments for stereo won't necessarily
produce the appropriate balance for mono.

I don't see where what is right for mono is right for stereo, and vice-versa.

  #32   Report Post  
Phil Brown
 
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I don't see where what is right for mono is right for stereo, and vice-versa.

Look up, how MS miking works and you will.
Phil Brown
  #33   Report Post  
William Sommerwerck
 
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I don't see where what is right for mono is right for stereo, and vice-versa.

Look [it] up, how MS miking works, and you will.


Why do I have to explain things over and over and over and over and over and
over and over and over and over again? How can someone who supposedly knows
something about recording not understand this intuitively?

You're talking acoustics, not aesthetics. They're not the same thing.

We're talking about single-point mono and stereo recordings -- not
multitracking. Right? Right.

When recording in mono with a single mic, the performers are going to stand
_around_ the (omni?) mic, possibly at varying distances, according to level.

With a stereo recording, they will take positions corresponding to their desired
position from left to right. In such a case, the output of the M mic might or
might not be ideal for a mono recording, because it doesn't necessarily produce
the same balance.

To turn the argument around the other way... If I replaced Mercury's Living
Presence mono mic with an M-S pickup, the resulting stereo recording would not
necessarily be optimum or ideal, even if the mono recording were.

  #36   Report Post  
David Satz
 
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William Sommerwerck wrote:

Spreading out the instruments for stereo won't necessarily produce
the appropriate balance for mono.

I don't see where what is right for mono is right for stereo, and
vice-versa.


This is a matter of one's taste and judgment, and its "truth value" is
a matter of degree. The only claim that I think is really solid is that
_if_ there exists a miking position from which a good-sounding mono pickup
can be made (with whatever type of microphone one prefers there, as long
as its pickup pattern is laterally symmetrical), then a plausible and
usable stereo recording can be made with the M/S technique.

That is _not_ to say that:

[a] there always is such a miking position;

[b] the resulting stereo recording will be the best one possible; or

[c] an M/S stereo recording will necessarily give you a wide range of
plausible choices for the reverberation ratio and the stereo basis width.

On the contrary:

[a] Some types of ensemble can't be miked effectively from a single
position, particularly in some of the acoustic settings in which
performances (for better or worse) actually occur;

[b] An M/S stereo recording is a coincident stereo recording--and not
everyone prefers that approach, for reasons which we've discussed here
many a time already;

[c] Generally there is only a narrow range of plausible choices for the
amount of "S" signal that is sent to the matrix for stereo playback.
Stereo playback feels unsatisfying when it is so nearly mono that the
space between the speakers isn't filled. But when you set the amount
of "S" which just fills that space, then for better or worse, you've
just nailed down the reverberation ratio of the recording, too. That
parameter can't be varied independently in classic M/S recording.

Does that seem like a fair analysis to you?

--best regards
  #37   Report Post  
Paul Stamler
 
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Just to be argumentative:

Here's a diagram of a string quartet:

Violin Violin

O

Viola Cello

The O represents an omni microphone. All performers are facing it. This
would be an arrangement where you'd probably get a good mono recording if
the room was decent, but there's no way to get a good stereo recording with
the instruments in the same positions.

Well, it's fairly academic in the case of symphonic music, because normally
that's recorded in a more-or-less standard orchestral seating arrangement,
and typically the microphone positions that work well for that in stereo
work well in mono too. But for chamber music, or bluegrass, or some other
types of music, there could indeed be setups with real incompatibility,
which is what Mr. Sommerwerck is saying.

Peace,
Paul


  #39   Report Post  
William Sommerwerck
 
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William is not talking about MS math. He is talking about
how one places the performers relative to the mic when
doing stereo recording vs when doing mono recording.
His point is well-taken.


Thanks to Bob and David for showing that they understood the point.

The original posting involved the question as to why a group, in the late
'50s/early '60s, would make two separate recordings, one in mono, the other
stereo.

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David Satz
 
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Paul Stamler wrote:

Just to be argumentative:

Here's a diagram of a string quartet:

Violin Violin

O

Viola Cello

The O represents an omni microphone. All performers are facing it.
This would be an arrangement where you'd probably get a good mono
recording if the room was decent, but there's no way to get a good
stereo recording with the instruments in the same positions.


That's a challenging example. But if the omni ("M") and figure-8 ("S")
have equal sensitivity, then the result of matrixing their signals would
be equivalent to a pair of back-to-back cardioids. The four instruments
would thus receive approximately equal coverage, and there wouldn't be
the type of phase conflict which occurs when direct sound sources are
located behind the microphones in, say, a Blumlein setup.

So this could be considered at least as a somewhat plausible M/S stereo
miking arrangement, though certainly not the one I'd normally choose.

Some chamber music (particularly contemporary music) actually is recorded
in more or less this way sometimes--I once lent my Schoeps stereo mike to
Ralph Dopmeyer of Titanic Records so that he could record a quartet by
Harley Gaber with it. Ralph ended up setting it to crossed figure-8s and
plunking it down right in the middle of the quartet. The record sounds
very interesting when played through a Dynaco Quadapter system ...



[F]or chamber music, or bluegrass, or some other types of music,
there could indeed be setups with real incompatibility, which is
what Mr. Sommerwerck is saying.


That's not necessarily a technical incompatibility between stereo and
mono; it's more like a clash with our accustomed idiom of a side-to-side,
frontal stereo image for instrumental music. We use other idioms for
recording operas, organ, etc. in stereo, but when instrumental music is
involved, we don't want to think in any other way--and I do include myself.

(Hmm, wasn't there a thread in this newsgroup not long ago about using
surround techniques to record an orchestra from the center outward? I
didn't join the thread since I'm an old orchestra player myself; I can't
take that type of recording seriously, except perhaps as a way to show
how absurdly ill-balanced one's "listening experience" is when one is
seated in the middle of an orchestra.)

Again, to make it very clear: I'm not proposing M/S as the cure for all
evils. I'm saying that if/when/where a single-mike setup is a plausible
solution for mono (which is not always), M/S can also be counted on to
deliver at least a serviceable result in stereo.

In practice, I think that this principle can also be inverted: If the
miking position doesn't allow for any good M/S solution, then it probably
isn't such a good miking position for mono, either.
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