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#1
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Is this a cell phone?
Hey,
I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? The client said her cell phone was dead off. I swapped out the cable for one that Eric Toline had wired up with the Neutrik EMF defeating XLRs and the noise went away. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demos http://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA |
#2
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On Fri, 13 May 2011 15:23:25 -0400, Ty Ford
wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? The client said her cell phone was dead off. I swapped out the cable for one that Eric Toline had wired up with the Neutrik EMF defeating XLRs and the noise went away. Regards, Ty Ford Well it is certainly not a GSM phone. Maybe 3G or GPRS - I haven't heard what they sound like as a source of interference. d |
#3
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
As I'm in a country (Australia), that uses GSM & GPRS, it's certainly not
a noise that I've heard from a mobile device. Martin Harrington On 14/05/11 7:12 AM, in article , "Don Pearce" wrote: On Fri, 13 May 2011 15:23:25 -0400, Ty Ford wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? The client said her cell phone was dead off. I swapped out the cable for one that Eric Toline had wired up with the Neutrik EMF defeating XLRs and the noise went away. Regards, Ty Ford Well it is certainly not a GSM phone. Maybe 3G or GPRS - I haven't heard what they sound like as a source of interference. d |
#4
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark |
#5
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On Fri, 13 May 2011 20:59:19 -0400, "MarkK"
wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav d |
#6
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
Don Pearce wrote:
On Fri, 13 May 2011 20:59:19 -0400, "MarkK" wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav It sounds to me like something automatically dialling a DTMF sequence. I can't work out how it would be coming in as RF, though, unless it's an analogue cordless phone nearby. -- Tciao for Now! John. |
#7
Posted to rec.audio.pro
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Is this a cell phone?
Don Pearce wrote:
On Fri, 13 May 2011 20:59:19 -0400, "MarkK" wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav d I love this place. -- shut up and play your guitar * http://hankalrich.com/ http://www.youtube.com/watch?v=NpqXcV9DYAc http://www.sonicbids.com/HankandShai...withDougHarman |
#8
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Is this a cell phone?
On May 14, 2:48*am, John Williamson
wrote: Don Pearce wrote: On Fri, 13 May 2011 20:59:19 -0400, "MarkK" wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. I´d put my money on that source being a cell phone of some kind, it doesn´t sound like RFI of any kind, but much more like a DTMF acoustic dial tone, you´d be amazed at just how much digital and analogue garbage comes out of these things at tonnes of separate frequencies, even when they´re in so called ´silent´ mode or even when in standby. I have this old compact 5W self-powered speaker system that has some kind of weird transformer in it, sat in my studio. It was made in the days ´pre-mobile phone´ and seems to react to every bit of high-end EM spectrum noise that´s around, makes for quite an effective yard stick to see what digital garbage is floating around in a potential location, I often take it out on audio reccies... But this sounds like it came out of a digital amplifier, of the kind used in cells... on my Grado cans, I can also hear on your original recording low frequency vibrations preceding the musical tone, they sound like LF battery vibrate alerts, also from a cell. Many clients put their phones on ´silent´ and consider that to be ´off´... or possibly, there was another one in the room? |
#9
Posted to rec.audio.pro
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Is this a cell phone?
OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav OK I hear that in the original at 0:14 but that is AFTER the take? Mark |
#10
Posted to rec.audio.pro
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Is this a cell phone?
On Sat, 14 May 2011 15:00:24 -0400, "MarkK"
wrote: OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav OK I hear that in the original at 0:14 but that is AFTER the take? Mark The same sound is present during the start of the take, but nothing like as obvious. d |
#11
Posted to rec.audio.pro
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Is this a cell phone?
"hank alrich" wrote in message
... Don Pearce wrote: On Fri, 13 May 2011 20:59:19 -0400, "MarkK" wrote: Hey, I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav OK I'll admit I didn't hear any noise... Can everyone else here it? I can't... Maybe that's why I'm such a big believer in measurements.. Mark I've extracted and amplified the offending part here http://www.soundthoughts.co.uk/listen/cell1.wav d I love this place. It sounds to me more like a simple digital game sound effect. Or a ring tone. Steve King |
#12
Posted to rec.audio.pro,rec.arts.movies.production.sound,
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Is this a cell phone?
Ty Ford wrote:
I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? It's not a cellphone. It doesn't sound like FSK data either. By any chance were you recording near a paging system tower? Old-style paging services were on 30-50 Mhz band and sounded kind of like that. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#13
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On Sat, 14 May 2011 17:05:38 -0400, Scott Dorsey wrote
(in article ): Ty Ford wrote: I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? It's not a cellphone. It doesn't sound like FSK data either. By any chance were you recording near a paging system tower? Old-style paging services were on 30-50 Mhz band and sounded kind of like that. --scott Nope. It was here in my studio where I have recorded umpteen hours of stuff and never heard anything like this. What's weirder is that at other times it varied in intensity (loudness) even within one sequence; fading in and out. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demos http://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA |
#14
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On May 15, 9:41*am, Ty Ford wrote:
On Sat, 14 May 2011 17:05:38 -0400, Scott Dorsey wrote (in article ): Ty Ford wrote: I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? It's not a cellphone. *It doesn't sound like FSK data either. By any chance were you recording near a paging system tower? *Old-style paging services were on 30-50 Mhz band and sounded kind of like that. --scott Nope. It was here in my studio where I have recorded umpteen hours of stuff and never heard anything like this. *What's weirder is that at other times it varied in intensity (loudness) even within one sequence; fading in and out. |
#15
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
I can't tell on this computer, sounds pretty good (hey, cheap speakers). Send me
a couple more samples. jg On May 15, 9:41 am, Ty Ford wrote: On Sat, 14 May 2011 17:05:38 -0400, Scott Dorsey wrote (in article ): Ty Ford wrote: I got a brand new interference sound I've never heard before today coming |
#16
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On May 15, 8:22*pm, G wrote:
On May 15, 9:41*am, Ty Ford wrote: On Sat, 14 May 2011 17:05:38 -0400, Scott Dorsey wrote (in article ): Ty Ford wrote: I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? It's not a cellphone. *It doesn't sound like FSK data either. By any chance were you recording near a paging system tower? *Old-style paging services were on 30-50 Mhz band and sounded kind of like that. --scott Nope. It was here in my studio where I have recorded umpteen hours of stuff and never heard anything like this. *What's weirder is that at other times it varied in intensity (loudness) even within one sequence; fading in and out. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demoshttp://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA Sounds like processor or display sound to me. Greg I listened to most of the stuff just now on my centech cable tracer. The only thing that comes close is the touch pad on my laptop. I check two different phone types, iPad, bluetooth, wifi, etc. No tones out of displays. Greg |
#17
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On May 15, 8:49*pm, G wrote:
On May 15, 8:22*pm, G wrote: On May 15, 9:41*am, Ty Ford wrote: On Sat, 14 May 2011 17:05:38 -0400, Scott Dorsey wrote (in article ): Ty Ford wrote: I got a brand new interference sound I've never heard before today coming in on a mic during a session here. http://home.comcast.net/~tyreeford/cell.wav Has anyone heard this yet? What is it? It's not a cellphone. *It doesn't sound like FSK data either. By any chance were you recording near a paging system tower? *Old-style paging services were on 30-50 Mhz band and sounded kind of like that. |
#18
Posted to rec.audio.pro
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Is this a cell phone?
It sounds to me more like a simple digital game sound effect. Or a ring tone. Steve King Ty, Did the client HAVE a cell phone regardless of if she thought it was on or off? Was it a GSM type cellphone by chance? Mark |
#19
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
G wrote:
I keep thinking sounds like a sound sequence, since it fades out at the end. Agree, and I wonder about it is an acoustic source in someones pocket or electromagnetically induced into a cable or a mic, ie. possibly not at all RFI. Greg Kind regards Peter Larsen |
#20
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Is this a cell phone?
On Mon, 16 May 2011 13:02:44 -0400, Peter Larsen wrote
(in article ): G wrote: I keep thinking sounds like a sound sequence, since it fades out at the end. Agree, and I wonder about it is an acoustic source in someones pocket or electromagnetically induced into a cable or a mic, ie. possibly not at all RFI. Greg Kind regards Peter Larsen We didn't hear it "in the air." When I muted that mic input (only using one) the signal from the mic and the noise stopped. She thought her phone was "dead off" and should know the difference. She'll be coming back in a few weeks. I'll see if we have time to experiment Thanks for everyone's thoughts. The special Eric Toline cable foiled it, presuming it kept on going after I swapped out the mic cable. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demos http://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA |
#21
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
We didn't hear it "in the air." When I muted that mic input (only using one) the signal from the mic and the noise stopped. She thought her phone was "dead off" and should know the difference. She'll be coming back in a few weeks. I'll see if we have time to experiment was it a GSM type cellphone? Mark |
#22
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Is this a cell phone?
On Mon, 16 May 2011 21:34:44 -0400, MarkK wrote
(in article ): We didn't hear it "in the air." When I muted that mic input (only using one) the signal from the mic and the noise stopped. She thought her phone was "dead off" and should know the difference. She'll be coming back in a few weeks. I'll see if we have time to experiment was it a GSM type cellphone? Mark Don't know. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demos http://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA |
#23
Posted to rec.audio.pro,rec.arts.movies.production.sound
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Is this a cell phone?
On May 17, 9:28*am, Ty Ford wrote:
On Mon, 16 May 2011 21:34:44 -0400, MarkK wrote (in article ): We didn't hear it "in the air." When I muted that mic input (only using one) the signal from the mic and the noise stopped. She thought her phone was "dead off" and should know the difference. She'll be coming back in a few weeks. I'll see if we have time to experiment was it a GSM type cellphone? Mark Don't know. Regards, Ty Ford --Audio Equipment Reviews Audio Production Services Acting and Voiceover Demoshttp://www.tyford.com Guitar player?:http://www.youtube.com/watch?v=yWaPRHMGhGA I have to analyze all kinds of cell phone audio anomalies in my day job for a major us provider. Its no rfi or dtmf I have ever encountered. I think you can eliminate phones as the cause |
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