14 июля 2011, 01:32 от Bill Unruh :
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>
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> 14 июля 2011, 01:32 от Bill Unruh :
> > Hmm, both the static and the "hum" look very strange.
> > The static would look like dropouts except they do not go to 0, but almost
> > seem as though they are sampling some other waveform. The "hum" has hal
Hmm, both the static and the "hum" look very strange.
The static would look like dropouts except they do not go to 0, but almost
seem as though they are sampling some other waveform. The "hum" has half that
looks like a nice sine wave and half that looks like a decapitated sine wive
-- with a rust
The "static" is continuous additional noise, which I would describe as a
low hum with an additional bouncing crackle. But I've posted a 300
kilobyte .wav file that I recorded in a quiet room:
http://www.unc.edu/~bapike/alsa/hum.wav
and spectra here (using two different horizontal scales):
On Wed, 13 Jul 2011, Brian Pike wrote:
> Hi,
> I've got a Compaq Presario 12XL505 laptop with a VT82C686 sound chip.
> Playing sound works fine. However, when I record sound using an external
> microphone, there is static recorded along with the sound. The microphone
> and microphone jack seem to
Hi,
I've got a Compaq Presario 12XL505 laptop with a VT82C686 sound chip.
Playing sound works fine. However, when I record sound using an external
microphone, there is static recorded along with the sound. The microphone
and microphone jack seem to be working fine, since there is no static when
