[asterisk-users] Adjusting confbridge call quality

[Matthew J. Roth]

Chris Gentle wrote:
>>>
>>> Is there any way I can improve the audio quality in a confbridge in
>>> Asterisk 11?  I've changed the internal_sample_rate setting to 44100
>>> but that doesn't seem to make any difference.  I would also think this
>>> would make my confbridge recordings 44100 but they all end up as 8000.
>>> Am I completely missing something?

basteon wrote:
>>
>> What codec do you use with yours subscribers?

Chris Gentle wrote:
>
> ulaw


Chris,

The sampling frequency for u-law is 8,000 Hz.  You can't produce a recording
with higher quality than the source, so you'd have to switch to a wideband codec
to improve the conferences and recordings [1] [2].

[1] https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Codecs+and+Audio+Formats
[2] http://www.slideshare.net/saghul/wideband-audio-conferencing-with-asterisk

Regards,

Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer