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#1
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Electret and loud music
Hello,
Is it possible than loud music and sounds in night clubs could damage electrets mics from mobile phone ? Is the limit of actual mobile phone is near 95 db SPL ? A friend of me complains her mobile mobile phone's mic doesn't work well since she have been to night club a few weeks ago. (Her correspondants can not hear here voice correctly at any time, in any condition, so, it seems the phone mic may be damaged a litle) . Thanks an advance for your help and informations, Zeldus |
#2
Posted to sci.electronics.components,rec.audio.pro
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Electret and loud music
"Zeldus" wrote in message
... Is it possible than loud music and sounds in night clubs could damage electrets mics from mobile phone ? From a theoretical perspective it is entirely possible, a big enough compression wave (sound is one type) can break just about anything. Is the limit of actual mobile phone is near 95 db SPL ? Almost certainly not. What more likely happened (if it did indeed occur at the same time) is that your friend got a wee bit too drunk and spilled her 150 proof "water" on it, ran into something, or heaven forbid dropped the phone when she was hugging the sidewalk. Joe |
#3
Posted to sci.electronics.components,rec.audio.pro
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Electret and loud music
"Zeldus" wrote ...
Is it possible than loud music and sounds in night clubs could damage electrets mics from mobile phone ? Is the limit of actual mobile phone is near 95 db SPL ? A friend of me complains her mobile mobile phone's mic doesn't work well since she have been to night club a few weeks ago. (Her correspondants can not hear here voice correctly at any time, in any condition, so, it seems the phone mic may be damaged a litle) . Thanks an advance for your help and informations, Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) |
#4
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Electret and loud music
"Richard Crowley" a écrit dans le message de news: ... Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) I don't think so :-) My question was more to know what is the actual limit in decibel where an electret used in a mobile phone can be damaged by a very strong level sound exposure. Some people say it's 95 DB SPL which it seems low... A train or a truck can create louder noise. Zeldus |
#5
Posted to sci.electronics.components,rec.audio.pro
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Electret and loud music
"Zeldus" wrote in message
"Richard Crowley" a écrit dans le message de news: ... Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) I don't think so :-) OK, so maybe it was Diet Coke? ;-) My question was more to know what is the actual limit in decibel where an electret used in a mobile phone can be damaged by a very strong level sound exposure. Probably, loud enough to physcially damage it in other ways. Some people say it's 95 DB SPL which it seems low... I've looked at the spec sheets for mics like those in cell phones, and they specified marginally linear operation at something like 114 dB. That's not the point of damage, that's the 10% THD point. A train or a truck can create louder noise. Agreed. A car with open windows and going 70 mph might generate LF sounds in the 130 dB range. |
#6
Posted to sci.electronics.components,rec.audio.pro
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Electret and loud music
Richard Crowley wrote:
A friend of me complains her mobile mobile phone's mic doesn't work well since she have been to night club a few weeks ago. Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) If not that, at least very high humidity from being surrounded by sweaty bodies? Electrets aren't best suited to humidity. As for sound level, I'd have thought 95dB could easily be exceeded by shouting in to the phone, and most mics don't suffer distortion (never mind permanent damage) until much higher levels than that. Anahata |
#7
Posted to sci.electronics.components,rec.audio.pro
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Electret and loud music
"Zeldus" wrote in message ... "Richard Crowley" a écrit dans le message de news: ... Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) I don't think so :-) My question was more to know what is the actual limit in decibel where an electret used in a mobile phone can be damaged by a very strong level sound exposure. Some people say it's 95 DB SPL which it seems low... A train or a truck can create louder noise. Zeldus Ask your friendly neighbourhood gangster - if gunshots don't damage a cell mic then nightclub music is unlikely to! |
#8
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Electret and loud music
"A car with open windows and going 70 mph might generate LF sounds in the
130 dB range" Is it fair to say that skydivers may well have severely compromised LF hearing? It's been a long time, but from memory typical jumps give 1-1.5 mins freefall at a time, maybe 3-4 times a day, one or two days a week. This mightn't be enough to do anything permanent - maybe cumulatively though. "Anahata" wrote in message ... Richard Crowley wrote: A friend of me complains her mobile mobile phone's mic doesn't work well since she have been to night club a few weeks ago. Didn't get some kind of alcoholic beverege dripped into it, perhaps? :-) If not that, at least very high humidity from being surrounded by sweaty bodies? Electrets aren't best suited to humidity. As for sound level, I'd have thought 95dB could easily be exceeded by shouting in to the phone, and most mics don't suffer distortion (never mind permanent damage) until much higher levels than that. Anahata |
#9
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Electret and loud music
Karl Engel wrote:
Is it fair to say that skydivers may well have severely compromised LF hearing? It's been a long time, but from memory typical jumps give 1-1.5 mins freefall at a time, maybe 3-4 times a day, one or two days a week. This mightn't be enough to do anything permanent - maybe cumulatively though. HOPEFULLY they are wearing hearing protection, both ear plugs and the proection integral to their helmet. Note that spending an hour or so in the back of a C-130 is probably worse for your hearing than the actual jump, but this isn't saying much. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#11
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Electret and loud music
Zeldus wrote:
And in a very loud sound condition (stronger than night clubs like industrial tools or guns shoots, higher than 130 DB), is there a risk of damage if the cell phone is switched off ? If it's going to get damaged it makes no difference whether the phone is switched on or off. The damage is purely mechanical. -- Anahata -+- http://www.treewind.co.uk Home: 01638 720444 Mob: 07976 263827 |