[Icon-tech] Allowing Mic input to play through the headphones

[Chase Crispin]

Oh thank goodness I've been wanting this for ages with no response grin>! 
When you get everything running, could you think about making it into a file 
those of us that want it can run the file and have the recorder do this?
Also, you said stereo in one of your commands.  Well, the Icon/BraillePlus's 
internal microphone is mono, and that probably would cause the internal 
microphone to behave like it does now.  I'm probably wrong as usual <smile>, 
but just a thought.
Regards,



Chase Crispin
Blog:
http://www.blindmobiletech.blogspot.com/
Podcast:
http://blindmobiletechpodcast.wordpress.com/
Website:
http://www.blindmobiletech.net/
chase dot crispin at gmail.com


----- Original Message ----- 
From: "Blake Galbraith" <blakeblind at gmail.com>
To: <icon-tech at mulcahy.ws>
Sent: Saturday, July 05, 2008 9:32 PM
Subject: [Icon-tech] Allowing Mic input to play through the headphones


> Hello, all.
> I have been working on attempting to make the microphone input play
> back through the headphones.
> I am aware of a few things. Firstly, this will also play through the
> Icon's speakers or earpeace when the headphones are unplugged, this is
> because pretty much all of the Icon's outputs are being processed
> through the headphone mixer.
> 2. I was playing around with the out3 and out4 in the amixer controls,
> and discovered that if I set the out3, I believe it was, to the same
> volume as the 'Capture to Headphone' mixer control, I think this was,
> the microphone input to the earpeace would be louder.
> I don't remember each command I used, but I wrote two of them down
> which seem to work somewhat well.
> They are
> amixer set Capture 45
> amixer set 'Capture Headphone Mux',0 'Stereo'
> amixer set 'Capture to Headphone' 7
> If anyone doesn't want an explanation of what these commands do, skip
> this and go to the next paragraph.
> The first command was
> amixer set Capture 45
> This is the capture recording level, this is what you set in the
> recorder for the microphone's capture level, I believe.
> amixer set 'Capture Headphone Mux',0 'Stereo'
> I believe this is what brings the microphone input to the headphones,
> I'm not sure if this will also work with the external microphone or
> not, I haven't tried it.
> amixer set 'Capture to Headphone' 7
> This turns up the capture volume, I suppose this is the volume of the
> output that is returned through the headphones.
>
> I would like to know if anyone knows how to increase the output volume
> of the microphone.
> I'll keep playing around with it, and let anyone know if I reach a
> conclusion so you're not writing about something I've already
> discovered.
>
> Thanks, all.
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