[asterisk-users] Choppy audio

[bkruse]

Eric "ManxPower" Wieling wrote:
> Make the card stop sharing it's IRQ with your IDE controller.  Try 
> moving the card to another slot.
>
> Asterisk has to send an audio packet every 20ms for VoIP calls.  I 
> believe Zaptel expects no more than a few ms of latency.  If something 
> is causing a delay, like the IDE controller locking interrupts and doing 
> disk activity then you're not going to get your interrupts serviced fast 
> enough and you will have audio issues.
>
>   

Good suggestion. Can I also recommend to use the same types
of soundfiles as your current playing channel? (eg ulaw sounds
for phones using the ulaw codec)

-bk
> Doug Crompton wrote:
>   
>> I am not sure who all see's this list but I do have a few questions that
>> probably only the developers or somone really in the know of Asterisk
>> could answer.
>>
>> - What is the requirement for timing vs. audio playback in Asterisk.
>> Specifically voicemail and IVR's (Not meetme)
>>
>> - Has this requirment changed in newer versions?
>>
>> This obviously is when using Asterisk with no internal cards. I used
>> Asterisk for several years with a P3 Linux system, NO timing, and it
>> worked flawlessly. Now with this new Pentium Dual core system I do not
>> have the perfect audio I experienced with the less powerful system.
>>
>> I fully know there are MANY variable here. It could be a combination of
>> many things, including the OS (Linux Kernel) etc. BUT I offer this input,
>> Music on Hold works fine. This uses mpg123. So why can this palyback fine
>> and the other wav/gsm audio be choppy?
>>
>> I would gladly switch to a newer Asterisk (using 1.2.29) if someone said
>> this was solved in that version.
>>
>> My system can obviously play (mpg123 - background) audio fine. Why then
>> does Asterisk internal audio not also play well?
>>
>> Doug
>>
>> ****************************
>> *  Doug Crompton	   *
>> *  Richboro, PA 18954	   *
>> *  215-431-6307		   *
>> *		  	   *
>> * doug at crompton.com        *
>> * http://www.crompton.com  *
>> ****************************
>>
>>
>>
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>
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