Mic works, but in test hisses

[Gerhard]

Mic works, but in test hisses.

The microphone of a Logitech QuickCam 8.4 works fine in Skype for example.

But when I test it (WinXP), clickimg: Start/Control Panel/Sound and Audio
Devices/Voice/Default Device (camera)/Test hardware, the recording works
(i.e. the green column changes height)but playback only gives a strong
hissing sound (even when I lower recording and playback volume).
hanks in advance, Gerhard

 

[Gurpreet Singh]

If the Mic input is set to too high then the ambience noise could be
captured. Is your speaker and MIC are in close proximity it will produce a
very nasty noise. Keep the MIC volume low and disable MIC boost if it has
been enabled.

FYI ,Vista has automatic adjustment for input if too much noise is detected.

 

[Gerhard]

The hissing is there always, and no other sound, even when I lower the input.
the OS is Windows XP
Regards
Gerhard

 

[Terry R.]

The date and time was Wednesday, March 04, 2009 5:36:01 PM, and on a
whim, Gerhard pounded out on the keyboard:

Mic works, but in test hisses.

The microphone of a Logitech QuickCam 8.4 works fine in Skype for example.

But when I test it (WinXP), clickimg: Start/Control Panel/Sound and Audio
Devices/Voice/Default Device (camera)/Test hardware, the recording works
(i.e. the green column changes height)but playback only gives a strong
hissing sound (even when I lower recording and playback volume).
hanks in advance, Gerhard

Hi Gerard,

That is the noise inherent in the amplifier. Reduce the main volume of
the amp and the hiss will be reduced also. Depending on the quality of
the amplifier, some amps signal/noise ratio is quite high and even when
set a full volume can be extremely quiet. You're not going to get that
with cheap built in audio chips, at least at full volume levels. You
could also have the high frequency boosted too much which would make the
hiss even more noticeable.


Terry R.