Re: copp-set causes pop with transport running

On Thu, Jun 21, 2012 at 04:00:45AM -1000, Joel Roth wrote:
> Hi,
> 
> Nama fades volume on transport start/stop
> and track mute/unmute by issuing copp-set 
> 20 times per second.
> 
> Previously the sound changed smoothly.
> Recently S. Massy reported a pop on each vol or pan
> parameter change, and zipper noise during 
> fades that use copp-set.
> 
> I verified this with the following setup:
> 
> # ecasound chainsetup file
> 
> # general 
> -b:256 -r:50 -z:nointbuf -z:db,100000 -n:"/home/jroth/nama/test0619/Setup.ecs" -X -z:noxruns -z:nopsr -z:mixmode,sum
> 
> # audio inputs 
> -a:1 -f:f32_le,2,44100 -i:loop,Master_in
> -a:3 -f:s16_le,2,44100 -i:null
> 
> # audio outputs 
> -a:1 -f:s16_le,2,44100 -o:alsahw,0,0,0
> -a:3 -f:f32_le,2,44100 -o:loop,Master_in
> 
> # chain operators and controllers 
> -a:1 -epp:50.00 -eadb:0.00,0.00 
> -a:3 -eli:1047,220.00,1.00 -epp:50.00 -eadb:0.00,0.00 
Was this your whole setup? I did a little bit more digging on this, and
some projects exhibit this behaviour, while others don't. My best guess
at this point is that a specific condition triggers an engine
disconnect/reconnect on copp-set, but I can't pinpoint it just yet.

Cheers,
S.M.

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Ecasound-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ecasound-list