Re: channel manipulation
"Patrick Shirkey" <[email protected]>
| Newsgroups | gmane.comp.audio.ecasound.general |
|---|---|
| Message-ID | <[email protected]> |
On Sat, September 29, 2012 6:19 am, S. Massy wrote: > On Sat, Sep 29, 2012 at 05:41:14AM +1000, Patrick Shirkey wrote: >> >> On Sat, September 29, 2012 2:05 am, S. Massy wrote: >> > On Fri, Sep 28, 2012 at 11:23:09AM +1000, Patrick Shirkey wrote: >> >> ecasound -t 5 -f:s16_be,6,48000 \ >> >> -a:1,2,3,4,5,6 -i TEST_1-2.aif \ >> >> -a:1 -chmute:2 \ >> >> -a:2 -chmute:1 \ >> >> -a:3 -chmix:3 \ >> >> -a:4 -chmix:4 \ >> >> -a:5 -chmute:1 \ >> >> -a:6 -chmute:2 \ >> >> -a:5,6 -chmix:5 -chcopy:5,6 \ >> >> -a:all -o test-out.wav >> >> >> >> +++ >> > I've only skimmed this thread as it unfolded, but I must say I'm a bit >> > puzzled as to what exactly you are trying to achieve: could you >> explain? >> > Why do you keep mixing the signal with itself? >> > >> >> I have stripped each chain of it's respective filters to make sure that >> the actual chain is correct and avoid any further confusion. >> >> > All this channel manipulation can obfuscate things somewhat; perhaps a >> > simple way to debug could be to employ a two step method where you >> send >> > each channel to a single wave file and then rejoin them in a 6-channel >> > file again. Once you get the expected result, you could just modify >> your >> > setup to do it in one go. >> > >> >> I've already done that. My objective is a complete chain setup and I >> would > Successfully, I take it? > >> like to know why the code I have is not working. As far as I can tell it >> should result in valid output on channels 5,6. It doesn't make any sense >> that the output on those channels is silent. > It's a long shot, but are you aware that loop devices introduce a delay > of one buffersize (so about 21.3 MS for -b:1024)? If you have anything > like a periodic signal, this could conceivably cause some cancellation. > The test track is 5 seconds of one person talking. Do you mean cancellation in the playback or cancellation in the chain signal? -- Patrick Shirkey Boost Hardware Ltd ------------------------------------------------------------------------------ Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ Ecasound-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ecasound-list