Re: Disturbing input gain problem
Re: Disturbing input gain problem
- Subject: Re: Disturbing input gain problem
- From: Brett George <email@hidden>
- Date: Sun, 10 Jul 2011 08:28:16 -0700
On Jul 10, 2011, at 1:56 AM, Robert Bielik wrote:
> Brett George skrev 2011-07-10 05:50:
>> You might want to check if the Ambient Noise Reduction is enabled on the internal microphone. Its setting is adjustable in the input pane of the sound preference panel.
>
> Thank you Brett! That was indeed it. This was most noticeable when playing a colored noise signal, which then of course would be mistaken for "ambient noise" :)
>
> This ANR algo, is it only in effect when using AUHAL ? I.e. is it bypassed when talking "directly" with the input device ?
It's enabled whenever the microphone is used and the preference option has been selected.
> Though I'm not 100% sure, I had a report that this effect was noticeable on an external USB microphone as well, that would be possible, wouldn't it ?
Not possible if the device is class compliant (ie. it is using the AppleUSBAudio driver).
Brett. _______________________________________________
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