Loudness of recorded wav-audio

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Asterisk Users 1 Comment

I tried to ajust the tx- and rxgain for the sip peer in sip.conf. And
restarted the asterisk. But it takes no effect. Any suggestion?

2011/3/4 Danny Nicholas

> Defaults are 0.0 (leave volume unchanged) +values make volume louder, –
> softer.
>
>
> ——————————
>
> *From:* asterisk-users-bounces@lists.digium.com [mailto:
> asterisk-users-bounces@lists.digium.com] *On Behalf Of *Felix Dong
> *Sent:* Friday, March 04, 2011 8:55 AM
>
> *To:* Asterisk Users Mailing List – Non-Commercial Discussion
> *Subject:* Re: [asterisk-users] Loudness of recorded wav-audio
>
>
>
> Could yoz tell me the default value of rxgain or txgain, if there is no
> rxgain or txgain in conf-data defined?
>
> Von meinem iPad gesendet
>
>
> Am 04.03.2011 um 15:34 schrieb “Danny Nicholas” :
>
> In sip.conf, add rxgain=-4.0 to the peer. This (feel free to correct)
> should reduce the incoming volume by 4 decibels. You’ll have to do a “sip
> reload” for this to take effect.
>
>
> ——————————
>
> *From:* asterisk-users-bounces@lists.digium.com [mailto:
> asterisk-users-bounces@lists.digium.com] *On Behalf Of *Felix Dong
> *Sent:* Friday, March 04, 2011 8:33 AM
> *To:* Asterisk Users Mailing List – Non-Commercial Discussion
> *Subject:* Re: [asterisk-users] Loudness of recorded wav-audio
>
>
>
> Thank you! How can I reduce the RXgain?
>
>
> Am 04.03.2011 um 15:21 schrieb “Danny Nicholas” <
> danny@debsinc.com>:
>
> ——————————
>
> *From:*
> asterisk-users-bounces@lists.digium.com [mailto:
> asterisk-users-bounces@lists.digium.com] *On Behalf Of *Felix Dong
> *Sent:* Friday, March 04, 2011 2:31 AM
> *To:*
> asterisk-users@lists.digium.com
> *Subject:* [asterisk-users] Loudness of recorded wav-audio
>
>
>
> Hello,
>
>
>
> I sent a wav-audio to Asterisk though SIP and ISDN channels and recorded it
> in wav-audio at the Asterisk server. I found the loudness level of the
> recorded audio was too high comparing with the orginal audio. How can I
> ajust it, so that there will be no amplifier used for recording.
>
> Thanks a lot.
>
>
> best regards
>
> Felix
>
>
>
> two options are:
>
> 1. reduce RXgain – assuming your are using Record() command
> 2. use sox to reduce the volume; something like sox –v .8 file1.wav
> file2.wav
>
>
>
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