David Kačerek wrote: > ... to prevent pointless and counterproductive resampling Resampling happens only when needed. And how can it be counterproductive? To check whether resampling is done, use aplay with the -v option. > If I play a 882000Hz track in mpd I can see in a performance monitor it uses > significantly more CPU when "speexrate_best" is set in comparison with the > bare "speexrate" so I guess mpd respects my "defaults.pcm.rate_converter" > value. But when played the same track in mplayer the CPU load is the same > regardless of the "defaults.pcm.rate_converter" value used. mplayer explicitly disables ALSA's resampler (if enabled) and uses its own. > Moreover when mplayer is started with "-af-adv force=3" parameter to > disable internal resampling playing of such a track is stopped with > an error even though "alsa" or "alsa:device=hw=0.0" is set as the audio > output. The "hw" device goes straight to the hardware, without software resampling. For resampling to be possible, you'd need to use "plughw" or the default "default" device. Regards, Clemens ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122912 _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
