Hi, I am an exprienced Linux user, but don't know much about ALSA, and I have a strange problem that I do not know how to fix: When I play mp3s, either directly with mplayer2, or via the audacious music player, targetting a USB sound card (AudioEngine D1) via ALSA, I hear clicks. However, I do not hear clicks if I use a WAV file (generated from the MP3) with aplay, or if I use audacious with Jack at 96kHz (which I think is a clumsy way of making audacious upsample to 96kHz before targetting Jack which in turn targets ALSA). > aplay -l **** List of PLAYBACK Hardware Devices **** card 2: D1 [Audioengine D1], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 3: VLink [Musical Fidelity V-Link], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 4: D2 [Audioengine D2], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 > mplayer2 -ao alsa:device=hw=2.0 test.mp3 [audible clicks] > lame --decode test.mp3 test.wav > aplay -D default:CARD=D1 -t wav test.wav Playing WAVE '/crypto/music/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono [works fine] > uname -a Linux block 3.4.11-2.16-desktop #1 SMP PREEMPT Wed Sep 26 17:05:00 UTC 2012 (259fc87) x86_64 x86_64 x86_64 GNU/Linux I am using OpenSuse 12.2 with their stock (desktop) kernel. ALSA version 1.0.25-3.5.1. I have the same problem with the D2 (and the D1 was fine with OpenSuse 12.1). The VLink is fine, but then it's a USB synch-to-asynch buffer, so maybe it should work better. I do not notice any strange values (CPU use, disk use) with atop when the clicks happen - this is a lightly loaded, fairly powerful desktop. Any advice? I have no ALSA-specific configuration - the above is just what happens by default. I am using the KDE desktop, which means that phonon is running, but I thought I was avoiding that by targetting ALSA directly (I am not very impressed with phonon - it seems to get confused if devices are unplugged etc and has also given clicks; I was thinking ALSA should be simpler...) Thanks, Andrew ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
