[Asterisk-Users] Audio level in compressed wav files

[Brian Cuthie]

Unfortunately, this doesn't really work out to be a great solution. The 
dynamic range of the original recording is limited and scaling it after 
the fact just yields fairly distorted sounding recordings.

It seems like the problem is a bug in the implementation of the 
compressed file format encoders, or the process by which they get 
invoked. I guess I'm going to have to dig into the code.

-brian


Bill Seddon wrote:

>Brian
>
>Take a look at sox (type man sox at the command prompt if sox it installed
>for details on the options available).  There is a "vol" argument that
>allows you to adjust the gain.  If this is what you need, you can call sox
>after record (using the system command) to adjust the gain.
>
>Bill Seddon
>
>-----Original Message-----
>From: asterisk-users-bounces at lists.digium.com
>[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Brian Cuthie
>Sent: September 11, 2004 7:40 PM
>To: asterisk-users at lists.digium.com
>Subject: [Asterisk-Users] Audio level in compressed wav files
>
>
>Anybody know an easy way to adjust audio level of recordings made in 
>Asterisk (using the 'record' application)?  I've noticed that recordings 
>using the "wav" format are about twice the level of those made using 
>"WAV" or "wav49". Unfortunately, the "wav" recordings are uncompressed 
>and about 10 times the size of the other formats.
>
>-brian
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