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#1
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Dynamic range - this is how to do it
Grab yourself an MP3 of a typical BBC live broadcast. They are doing a
season of the entire Beethoven repertoire, and here is the sixth symphony. The dynamic range in this broadcast is a joy - why can't everybody do this? Just skip the chat at the beginning. http://www.bbc.co.uk/radio3/beethoven/downloads.shtml d Pearce Consulting http://www.pearce.uk.com |
#3
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On Tue, 28 Jun 2005 14:14:54 +0200, martin griffith
wrote: The dynamic range in this broadcast is a joy better send it off to one of those "mastering" guys then. They'll sort that dynamic range problem out for you If only this were a joke... d Pearce Consulting http://www.pearce.uk.com |
#4
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martin griffith wrote:
On Tue, 28 Jun 2005 11:56:08 GMT, in rec.audio.pro (Don Pearce) wrote: Grab yourself an MP3 of a typical BBC live broadcast. They are doing a season of the entire Beethoven repertoire, and here is the sixth symphony. The dynamic range in this broadcast is a joy - why can't everybody do this? Just skip the chat at the beginning. http://www.bbc.co.uk/radio3/beethoven/downloads.shtml d Pearce Consulting http://www.pearce.uk.com The dynamic range in this broadcast is a joy better send it off to one of those "mastering" guys then. They'll sort that dynamic range problem out for you Indeed - they'll fix it just like you fix a dog. If only this weren't a joke. |
#5
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Arny Krueger wrote: martin griffith wrote: On Tue, 28 Jun 2005 11:56:08 GMT, in rec.audio.pro (Don Pearce) wrote: Grab yourself an MP3 of a typical BBC live broadcast. They are doing a season of the entire Beethoven repertoire, and here is the sixth symphony. The dynamic range in this broadcast is a joy - why can't everybody do this? Just skip the chat at the beginning. http://www.bbc.co.uk/radio3/beethoven/downloads.shtml d Pearce Consulting http://www.pearce.uk.com The dynamic range in this broadcast is a joy better send it off to one of those "mastering" guys then. They'll sort that dynamic range problem out for you Indeed - they'll fix it just like you fix a dog. If only this weren't a joke. I'm glad you agree with me.... I'd rather listen to a wide dynamic range MP3 then a compressed* to he** CD. * compressed = dynamic range compression, not data compression Mark |
#6
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#7
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On Tue, 28 Jun 2005 14:14:54 +0200, martin griffith
wrote: The dynamic range in this broadcast is a joy better send it off to one of those "mastering" guys then. They'll sort that dynamic range problem out for you This absolute right and absolute wrong crap drives me crazy. There just isn't any ABSOLUTE RIGHT about nearly anything in life, especially audio. Don't most of you studio guys use some compression? You guys keep criticizing compression in CD mastering and especially in radio. Fact is 80 - 90% of FM Radio is listened to while driving and it is difficult to listen to something completely uncompressed like this symphony in the car. To hear the quiet parts you'd have to turn up your speakers so loud as to blow your trunk open on the loud parts. True there is a lot of BAD mastering going on out there. Most Radio Engineers know lots about RF but very little about studio audio and they're the guys setting the compression. Just about any Bozo with an expensive compressor can all himself a mastering engineer these days, but that doesn't mean he knows how to use the equipment. A little compression for many situations is a good thing. Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. Julian |
#8
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On Tue, 28 Jun 2005 09:55:04 -0700, Julian
wrote: On Tue, 28 Jun 2005 14:14:54 +0200, martin griffith wrote: The dynamic range in this broadcast is a joy better send it off to one of those "mastering" guys then. They'll sort that dynamic range problem out for you This absolute right and absolute wrong crap drives me crazy. There just isn't any ABSOLUTE RIGHT about nearly anything in life, especially audio. Don't most of you studio guys use some compression? You guys keep criticizing compression in CD mastering and especially in radio. Fact is 80 - 90% of FM Radio is listened to while driving and it is difficult to listen to something completely uncompressed like this symphony in the car. To hear the quiet parts you'd have to turn up your speakers so loud as to blow your trunk open on the loud parts. True there is a lot of BAD mastering going on out there. Most Radio Engineers know lots about RF but very little about studio audio and they're the guys setting the compression. Just about any Bozo with an expensive compressor can all himself a mastering engineer these days, but that doesn't mean he knows how to use the equipment. A little compression for many situations is a good thing. Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. Julian In the UK context, on DAB, it absolutely makes it right. The listener has the option to reduce dynamic range on his receiver. What is compressed can't be uncompressed. Would you want the waiter to squirt ketchup over your rib eye steak as he serves it, telling you that he is dong that because some people might like it? No - the ketchup must stay in the bottle to be used by you if you really want it. d Pearce Consulting http://www.pearce.uk.com |
#9
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Julian wrote:
This absolute right and absolute wrong crap drives me crazy. There just isn't any ABSOLUTE RIGHT about nearly anything in life, especially audio. Don't most of you studio guys use some compression? You guys keep criticizing compression in CD mastering and especially in radio. Fact is 80 - 90% of FM Radio is listened to while driving and it is difficult to listen to something completely uncompressed like this symphony in the car. To hear the quiet parts you'd have to turn up your speakers so loud as to blow your trunk open on the loud parts. Right, this is why high end car radios have compression devices built into them. At least Blaupunkt and Alpine do this. You press the button and it's in, you press it again and it's out, and it's the END USER who makes the decision. Likewise the Dolby Digital home theatre stuff now includes a "night mode" in which the dynamic range is reduced in a predictable way on playback. You can turn it on, and you can turn it off, depending on your listening environment. If you need to compress in order to deal with the listening environment, that's fine and that's a good use of compression. But it needs to be done AT the listening environment and set SPECIFICALLY FOR the listening environment, because if I squash an album to sound good in the car it won't sound good anywhere else. Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. It's wrong to squash everything just to deal with the problems of some listeners, because compression cannot be undone. If you need to compress, do it in playback. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#10
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"Scott Dorsey" wrote in message ... Right, this is why high end car radios have compression devices built into them. At least Blaupunkt and Alpine do this. Heck, even the stock system in my Ford Taurus has compression that can be switched in, although only on the CD player, not the radio. Hal Laurent Baltimore |
#11
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Hal Laurent wrote:
Heck, even the stock system in my Ford Taurus has compression that can be switched in, although only on the CD player, not the radio. That would make sense. Radio is already pretty compressed. |
#12
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Julian wrote:
On Tue, 28 Jun 2005 11:56:08 GMT, (Don Pearce) wrote: Grab yourself an MP3 of a typical BBC live broadcast. They are doing a season of the entire Beethoven repertoire, and here is the sixth symphony. The dynamic range in this broadcast is a joy - why can't everybody do this? Just skip the chat at the beginning. Very Nice, Thanks. I really want Beethoven's 5th. I see it is not longer up at the site. Do you know if it is available anywhere else? Ask on 'uk.comp.sys.mac' -- ~ Adrian Tuddenham ~ (Remove the ".invalid"s and add ".co.uk" to reply) www.poppyrecords.co.uk |
#13
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On Tue, 28 Jun 2005 15:32:07 -0500, Joe Sensor
wrote: Hal Laurent wrote: Heck, even the stock system in my Ford Taurus has compression that can be switched in, although only on the CD player, not the radio. That would make sense. Radio is already pretty compressed. Also, the vast majority of CD's are c... oops, sorry, wrong thread. ----- http://www.mindspring.com/~benbradley |
#14
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#15
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Julian wrote:
On 28 Jun 2005 14:11:55 -0400, (Scott Dorsey) wrote: Julian wrote: Right, this is why high end car radios have compression devices built into them. At least Blaupunkt and Alpine do this. You press the button and it's in, you press it again and it's out, and it's the END USER who makes the decision. Most radio listeners don't have these. Right. THIS is the central problem. Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. It's wrong to squash everything just to deal with the problems of some listeners, because compression cannot be undone. If you need to compress, do it in playback. You are absolutely right and there is no technical reason why it *couldn't* be done this way. I invite you to call your local stations and tell them how over compressed they are. I don't think you'll be calling any of my stations however because I under compress as much as I can. Radio stations compress for marketing purposes. They believe that it is important to be the loudest station on the dial. Our local NPR affiliate really does use only mild compression, just the gainriding and mild limiting in the Optimod and they don't hit it very hard at all. It sounds really quite impressive. But the issue here isn't broadcasting, the issue under discussion is actual recordings. There _are_ some good reasons to squash broadcast signals, especially on AM where the available channel dynamic range is not so good. But these reasons do not not apply to direct CD release. In fact, squashing the hell out of CDs can actually be a problem when it comes time to run those CDs through a broadcast airchain. Bob Orban has an article on the subject somewhere. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#16
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On 29 Jun 2005 10:07:44 -0400, (Scott Dorsey) wrote:
Julian wrote: On 28 Jun 2005 14:11:55 -0400, (Scott Dorsey) wrote: Julian wrote: Right, this is why high end car radios have compression devices built into them. At least Blaupunkt and Alpine do this. You press the button and it's in, you press it again and it's out, and it's the END USER who makes the decision. Most radio listeners don't have these. Right. THIS is the central problem. Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. It's wrong to squash everything just to deal with the problems of some listeners, because compression cannot be undone. If you need to compress, do it in playback. You are absolutely right and there is no technical reason why it *couldn't* be done this way. I invite you to call your local stations and tell them how over compressed they are. I don't think you'll be calling any of my stations however because I under compress as much as I can. Radio stations compress for marketing purposes. They believe that it is important to be the loudest station on the dial. Our local NPR affiliate really does use only mild compression, just the gainriding and mild limiting in the Optimod and they don't hit it very hard at all. It sounds really quite impressive. But the issue here isn't broadcasting, the issue under discussion is actual recordings. There _are_ some good reasons to squash broadcast signals, especially on AM where the available channel dynamic range is not so good. But these reasons do not not apply to direct CD release. In fact, squashing the hell out of CDs can actually be a problem when it comes time to run those CDs through a broadcast airchain. Bob Orban has an article on the subject somewhere. --scott Not much to argue with here. I am very impressed how you can make a station sound reasonably loud but not artificial with one of Orban's expensive Optimods. And yes, the Optimod can't sound very good if the CD is already stepped on hard! Julian |
#17
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#18
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SSJVCmag wrote:
On 6/29/05 1:49 AM, in article , "Julian" wrote: 1) most cars don't have radios with user selectable compressors and you will sound better in most people's cars if you do compress. 2) Better signal to noise 3) Better immunity to interference With digital FM in the US reasons 2 and 3 will soon disappear. Ho HO! Me thinks he hasn;t experienced digital tv/fm yet! I haven't either. In fact, not a single station in this market has gone FM IBOC yet. But I'm waiting to see. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#19
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#20
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SSJVCmag wrote:
No, the point here is that a nastily hypercompressed recording fed through even a moderately aggressive station audio chain will come out sounding WORSE than it started (no matter that it started awful!) due to the artifacts and how it gets handled... Not necessarily. If it is already flatlined, the additional processing may not have than much effect. |
#21
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Joe Sensor wrote:
SSJVCmag wrote: No, the point here is that a nastily hypercompressed recording fed through even a moderately aggressive station audio chain will come out sounding WORSE than it started (no matter that it started awful!) due to the artifacts and how it gets handled... Not necessarily. If it is already flatlined, the additional processing may not have than much effect. Not at all! One of the big problems are the phase rotators that most airchains use, which will really scramble flat-topped waveforms and make them much nastier-sounding. Again, there's a paper from Bob Orban about this stuff that is probably on the web somewhere. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#22
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On 6/29/05 3:34 PM, in article , "Scott Dorsey"
wrote: SSJVCmag wrote: On 6/29/05 1:49 AM, in article , "Julian" wrote: 1) most cars don't have radios with user selectable compressors and you will sound better in most people's cars if you do compress. 2) Better signal to noise 3) Better immunity to interference With digital FM in the US reasons 2 and 3 will soon disappear. Ho HO! Me thinks he hasn;t experienced digital tv/fm yet! I haven't either. In fact, not a single station in this market has gone FM IBOC yet. But I'm waiting to see. There's no such thing as 'fringe' reception in the traditional sense... Once you;re just out of serious primary GREAT reception, you get nada! |
#23
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#24
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On Tue, 28 Jun 2005 09:55:04 -0700, Julian
wrote: Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. That's why car radios should have a compression function. Not why the source should be compressed. |
#25
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SSJVCmag wrote:
wrote: I haven't either. In fact, not a single station in this market has gone FM IBOC yet. But I'm waiting to see. There's no such thing as 'fringe' reception in the traditional sense... Once you;re just out of serious primary GREAT reception, you get nada! So, it's just like FM, only more so? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#27
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On Wed, 29 Jun 2005 23:21:02 GMT, SSJVCmag
wrote: You need to read Orban's stuff... Really. Will someone please post a link? |
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#29
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On Wed, 29 Jun 2005 19:07:26 GMT, SSJVCmag
wrote: Ho HO! Me thinks he hasn;t experienced digital tv/fm yet! My earlier post said I DID hear IBOC in Las Vegas last April. What makes you think I haven't seen digital TV? Julian |
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On Thu, 30 Jun 2005 00:58:47 +0100, Laurence Payne
wrote: On Tue, 28 Jun 2005 09:55:04 -0700, Julian wrote: Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. That's why car radios should have a compression function. Not why the source should be compressed. Yes, I can't disagree that in a perfect world it is the right way to do it. In the real world, "Should have" don't cut it. Things are done the way they are due to the evolution of the technology. If they knew back then what we know now, things might not be that way now. When all cars have local compression that would be a first step toward correcting. In the mean time, turn off the damn radio if it offends you. Julian |
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On Thu, 30 Jun 2005 02:10:58 GMT, Chris Hornbeck
wrote: So, it's just like FM, only more so? Great movie; just keeps getting better with time. *That* was a script. But my favorite line is still "I'm shocked. Shocked, that there is gambling going on here." "Your winnings, sir" (By the great Marcel Dalio, star of Jean Renoir's prewar _Grand Illusion_ and _Rules of the Game_, reduced here to character roles, but still scene stealing. Here's looking... Chris Hornbeck "Chief Assistant to the Assistant Chief" -F&S |
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Laurence Payne wrote: On Tue, 28 Jun 2005 09:55:04 -0700, Julian wrote: Of course it is also nice to hear full dynamic range especially of classical music in an excellent listening environment! That doesn't make it right and everything else wrong. That's why car radios should have a compression function. Not why the source should be compressed. It's all Motorola's fault. Bob -- "Things should be described as simply as possible, but no simpler." A. Einstein |
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#34
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On 30 Jun 2005 07:46:03 -0400, (Mike Rivers)
wrote: In article writes: That's why car radios should have a compression function. Not why the source should be compressed. What would you label the button so as not to confuse the user? Loud/Normal or perhaps AGE Under 30/Over 30 Better still, make it an optionally automatic function based on road speed - no problem these days. d Pearce Consulting http://www.pearce.uk.com |
#35
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On Wed, 29 Jun 2005 20:45:27 -0700, Julian wrote:
On Wed, 29 Jun 2005 23:21:02 GMT, SSJVCmag wrote: You need to read Orban's stuff... Really. Will someone please post a link? I found a couple of likely pages. http://www.masterdigital.com/24bit/radioprocess.htm http://www.bext.com/histproc.htm |
#36
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Don Pearce wrote:
On 30 Jun 2005 07:46:03 -0400, (Mike Rivers) wrote: In article writes: That's why car radios should have a compression function. Not why the source should be compressed. What would you label the button so as not to confuse the user? Loud/Normal or perhaps AGE Under 30/Over 30 Better still, make it an optionally automatic function based on road speed - no problem these days. Oh heavens! Please not another load of sensors and wiring.... (...having spent half the morning helping a neighbour sort out his car) -- ~ Adrian Tuddenham ~ (Remove the ".invalid"s and add ".co.uk" to reply) www.poppyrecords.co.uk |
#37
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"Adrian Tuddenham" wrote
in message id.invalid Don Pearce wrote: On 30 Jun 2005 07:46:03 -0400, (Mike Rivers) wrote: In article writes: That's why car radios should have a compression function. Not why the source should be compressed. What would you label the button so as not to confuse the user? Loud/Normal or perhaps AGE Under 30/Over 30 Better still, make it an optionally automatic function based on road speed - no problem these days. Oh heavens! Please not another load of sensors and wiring.... (...having spent half the morning helping a neighbour sort out his car) The point is that the sensors and wiring are already there. Since modern car radios are already on the system bus, its just a matter of routing some packets. |
#38
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On 6/29/05 9:05 PM, in article , "Scott Dorsey"
wrote: SSJVCmag wrote: wrote: I haven't either. In fact, not a single station in this market has gone FM IBOC yet. But I'm waiting to see. There's no such thing as 'fringe' reception in the traditional sense... Once you;re just out of serious primary GREAT reception, you get nada! So, it's just like FM, only more so? Well, Fm starts to get a little noisey, then loses stereo (or stays REAL noisey) then just gets lost or turns selectivity over to a stronger/local station signal Digital just STOPS. Think audio equivalent of those roving sports cams that lose link with the truck. |
#39
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#40
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Adrian Tuddenham wrote:
Don Pearce wrote: Better still, make it an optionally automatic function based on road speed - no problem these days. Oh heavens! Please not another load of sensors and wiring.... It's already there. My car radio/CD player is also a satellite navigation system, and the speed info is used for dead reckoning if it loses its view of the satellites and also to control the volume of the sound with the vehicle's speed. It's a standard pin assignment on a DIN radio connector. -- Anahata -+- http://www.treewind.co.uk Home: 01638 720444 Mob: 07976 263827 |
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