[wdmaudiodev] Re: Audio control for recording not possible???
- From: "Thomas Zepf" <thzepf@xxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 24 Sep 2002 09:52:51 +0200
I asume you are talking about HID Buttons. I think this will not work.
But you can declare a vol control for the input in your AC Interface
section this will work and you can control the volume with
SndVol32.exe /r. Of course you need some dsp functions on firmware
level to change the volumes or codec with vol control.
Cheers Thomas
----- Original Message -----
From: Ajai James <ajaijames@xxxxxxxxx>
To: <wdmaudiodev@xxxxxxxxxxxxx>
Sent: Monday, September 23, 2002 8:53 PM
Subject: [wdmaudiodev] Audio control for recording not possible???
>
> Hi friends,
> I am using an Ez USB board to prepare a demo audio project.I have a
requirement to increase the volume of my recorded wav file depending on the
buttons on my kit, ie vol up and down. The enumeration is ok now, and the
firmware keeps on pumping the hard coded sine tone values to the host.So,
after selecting th enumerated board as a recording device, I can record the
sine tone. Now, i want to change the volume of the sine tone using my boards
f1, f2 push buttons. I thought I could use the control end point with Vol
up, vol down for that. But it does not seem to work.
> On going through microsoft documentation
,http://www.microsoft.com/hwdev/tech/input/audctrl.asp
> it seems that audio controls are supported for play back only, not
recording..
> Am i correct in this assumption? any way to implement this without using
the audio controls
>
> Thanks a lot, for your kind suggestions and comments ...
> Ajai James
>
>
>
>
>
>
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