[asterisk-users] MOH distorted voice in Native and MP3 format

[Ron Arts]

Op 21-07-10 08:32, MohammedShehzad schreef:
> Hello,
>
> I have been facing an issue that voice is getting distorted sometimes in MOH
> (MusicOnHold) application.
> I have checked and confirmed that lame is properly installed, even tried
> native formats (ulaw, alaw, gsm), but the randomly seen distortion in MOH
> can't be eliminated.
> I came to know about requirement of timing device for MOH and MeetMe and a
> very good illustration by Andrew Kohlsmith on below old post.
> http://www.mail-archive.com/asterisk@uc.org/msg01449.html
>
> I think that today's high speed processors are capable of providing timing
> signals, and there is no need of timing device, and ztdummy is sufficient
> for that.
> I am wondering if it is MUST to have a separate timing device for properly
> functioning of MOH?
>
>

We have a customer reporting this too. It is very hard to reproduce though,
that's why I didn't put it on the bugtracker yet. I heard it myself once.
It sounds very bad. We use format_mp3. Didn't try anything else.
Moving from ISDN to SIP seemed to have alleviated the problem a lot. Now
it's even harder to reproduce, but the customer says it still happens
occasionally.

Running on 1.6.2.6.

Ron


>
> --
>
> -MohammedShehzad
>


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