Re: Plugin for amplifying microphone (software "mic boost")

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Ilya Konstantinov wrote:
> Hi,
> 
> I'm trying to add software amplification to my Bluetooth headset (which 
> works through the ALSA userspace plugin developed by the Bluetooth-alsa 
> project). On the ALSA plugins page, I've seen two plugins which seemed 
> somehow relevant: softvol and route.
> 
> Can any of them allow me to amplify the audio (yes, I'm aware that 
> software amp. is worse), or is there some other way?

For the real microphone, +6 dB boost:

pcm.!default {
     type asym
     playback.pcm "plug:dmix"
     capture.pcm {
         type route
         slave.pcm "plug:dsnoop"
         ttable.0.0 2.0
         ttable.0.1 0.0
         ttable.1.0 0.0
         ttable.1.1 2.0
     }
}

-- 
Alexander E. Patrakov


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