How to check if my microphone works??

hi,

I m using Platform builder with WINCE 4.2 .net frame work.
i m having a VIPER board supplied by Arcom.
for my application i want enable my microphone.
how can i check if my microphone is enabled.
is there any sample application which can do the audio capture..
i have written a sample application on VC++ for capturing audio thru
microphone.
this works fine on win 2000 and XP...but when i put it on my board.
nothing happens...
how can i test my microphone input.

thank u,

voidcoder
Thu Feb 09 13:04:51 CST 2006

You may want to try native Windows CE
audio recording sample.

PUBLIC\COMMON\SDK\SAMPLES\AUDIO\WAVREC\

"nothing happens" is a little bit vague. What exactly fails?


<kiran.india@gmail.com> wrote in message
news:1139402387.303683.182060@g43g2000cwa.googlegroups.com...
> hi,
>
> I m using Platform builder with WINCE 4.2 .net frame work.
> i m having a VIPER board supplied by Arcom.
> for my application i want enable my microphone.
> how can i check if my microphone is enabled.
> is there any sample application which can do the audio capture..
> i have written a sample application on VC++ for capturing audio thru
> microphone.
> this works fine on win 2000 and XP...but when i put it on my board.
> nothing happens...
> how can i test my microphone input.
>
> thank u,
>

kiran
Fri Feb 10 00:50:09 CST 2006

hi,
sorry for that...
i mean...no recording takesplace...but some data is been written to the
file...
when i tried playing those samples...no result...i could hear
nothing.....

Voidcoder
Fri Feb 10 10:47:51 CST 2006

Well, are you sure you are recording from the MIC input
and not from the LINE-IN? Note some audio codecs
have a possiblity to select IN source (MIC or LINE-IN),
so are you sure the wave driver configures it right?
Are the sources available?

<kiran.india@gmail.com> wrote in message news:1139554209.345443.127590@g43g2000cwa.googlegroups.com...
> hi,
> sorry for that...
> i mean...no recording takesplace...but some data is been written to the
> file...
> when i tried playing those samples...no result...i could hear
> nothing.....
>

kiran
Fri Feb 10 04:27:51 CST 2006

ya i m sure that i m using MIC input and not line-in.
where can we see if our audio driver is configured correctly..
ya i have used the sample application waverec, available in samples

Voidcoder
Fri Feb 10 13:51:50 CST 2006

No, you didn't get it. I mean that some Audio Codec
chips allow to select the audio input source, for example
you can use microphone or line level source like
CD/MP3 player. Normaly the source is selected by
setting a special bit somewhere in the codec's
registers. Thus possible that your audio driver
configures codec for LINE-IN source, while you are
using MIC input. The result will be something what
you can see now, ie. audio record works but input
signal is bad.

You can easily check it by connecting some line
level input (not microphone) and try to record
something.

In case it does not work, the problem is
somewhere else. May be hardware problem,
may be driver sets low MIC volume, etc.

Btw did you try to play the recorded file


<kiran.india@gmail.com> wrote in message news:1139567271.126582.264800@g43g2000cwa.googlegroups.com...
> ya i m sure that i m using MIC input and not line-in.
> where can we see if our audio driver is configured correctly..
> ya i have used the sample application waverec, available in samples
>