dpierce.cartchunk.org@[EMAIL PROTECTED]
wrote:
> On May 1, 2:59 pm, Beta Zero <beta_z...@[EMAIL PROTECTED]
> wrote:
>> In the olden days, microphones had membranous
>> diaphragms of some kind, and the way these things
>> responded to vibrations, had a lot to do with
>> the frequencies transmitted. I figured that a 'hot'
>> microphone would produce a different range of
>> sounds than a 'cold' one.
>
> Uh, no.
>
> The vibrations impinging on the diaphragm produce
> corresponding eletrical signals. 1 kHz in, 1 kHz out,
> simple as that.
>
> If "a hot microphone produce a different range of
> sounds than a cold one," you have a seriously broken
> microphone: throw it out.
>
> Microphone sensitivity, noise level and even relibility
> can change with temperatire, but there's no physical
> mechanism, which can cause an operating microphone
> listening to one range of frequencies to change them
> into some other range.
>
I don't think he's trying to say that the actual frequency in vs.
frequency out changes--just that frequency *response* could change.
I was waiting for someone more versed than I to answer this question.
Given that a lot of diaphragms are made of very thin plastic, I can
imagine that temperature might have an effect on the response. As temp
goes up, many plastics become more compliant, which would affect how
they respond to sound vibration.
I don't have any direct empirical evidence, however. I was hoping
someone else would....
jak
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