[asterisk-users] signal amplified by asterisk

[Felix Dong]

I checked the recorded files. They were recorded in MS PCM wav format with
rate128kbs. Has anyone another idea?


2011/3/15 Danny Nicholas <danny at debsinc.com>

>   ------------------------------
>
> *From:* asterisk-users-bounces at lists.digium.com [mailto:
> asterisk-users-bounces at lists.digium.com] *On Behalf Of *Felix Dong
> *Sent:* Tuesday, March 15, 2011 4:19 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] signal amplified by asterisk
>
>
>
> Hi there,
>
>
>
> i called one asterisk server from another asterisk server. The calling
> server played back a audio data und the answering server recorded the audio
> sample using record() function.
>
> I tried both ISDN, VoIP connections. Camparing with the original audio
> data, the recorded samples from both connections were amplified by asterisk,
> so that the recording were much louder. But I didn't adjust any rxgain or
> txgain. I am wondering, how could it be!? Is this case normal? Can anyboby
> tell me, how many dB will the transmitted and recieved signals be amplified
> by asterisk in case of default rxgain and txgain (with another words: no
> setting these values)?
> Thanks a lot.
>
>
>
> best regaud
>
>
> Felix
>
>
>
> My guess is that somehow the recorded file is a GSM 6.10 (WAV) file instead
> of the Microsoft PCM 16 bit mono (wav) you are expecting.  File <foo> will
> verify this.
>
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