Re: IPAQ audio quality

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From: That->Kid (e_dadu_at_nomospam.yahoo.com)
Date: 02/01/04 

Date: Sun, 1 Feb 2004 07:53:15 -0500

On your ipaq goto Start>Settings>System>iPaq Audio>Microphone AGC and
disable AGC and set the microphone gain to 15 and see how that works. The
agc in ppc's leaves much to be desired and I have better results setting the
gain myself. Also if you goto Start>Settings>Input>Options you'll see your
recording format set to 11,025 hz, 8bit Mono(if you haven't changed it).
The spike you see at 10khz is the word clock for the audio. If you set it
to 44,100, 16 bit the spike will move to 16khz, normally there should be a
filter which nulls out that spike but even on high end digital equipment you
will still see it. Hope this helps. 

-- 
Eric Hicks  (MS-MVP Mobile Devices)
Please post *ALL* questions and replies to the news group for the mutual
benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...
"Patrick Free" <not@nowhere.com> wrote in message
news:MPG.1a8668915a7506b298986e@news-server.austin.rr.com...
>
> I have an IPAQ 5555.  If I record using the built-in mic, the audio is
> just barely audible.  If I use a headset/mic then I can hear the audio
> better, but there is a significant background hiss, and a higher
> frequency noise as well.   Interestingly, this program:
>
> http://www.phonature.com/home/products_pdaApp_ppc_HandDeeSA.htm
>
> shows a pretty consistent audio signal at about 10 KHz.
>
> I don't know if I am expecting too much from PDA audio recording.
> Should I just expect to hear understandable speech, and be satisfied
> with that?
>
> Can anyone point me to a wav from an IPAQ mic in that shows typical
> voice recording?
>
> Thanks!
>
> Patrick

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