Hi, folks. I've been trying to track down the source of a rather odd problem I'm having. I've been using the pulseaudio-equalizer module, but it seems to have some issues when using it via libao. My hardware: - Asus eeePC 1015PEM - Intel Corporation NM10/ICH7 Family High Definition Audio Controller (on motherboard) - FiiO E10 USB DAC My software: - Linux wheatley 3.14.1-1-ARCH #1 SMP PREEMPT Mon Apr 14 20:40:47 CEST 2014 x86_64 GNU/Linux <ArchLinux> - pulseaudio 5.0 - libao 1.2.0 - alsa-lib 1.0.27.2 To enable the EQ, I've added the following to my default.pa: load-module module-dbus-protocol load-module module-equalizer-sink The issue: When running [libao_sound_source] -> equalizer -> Audio card, the audio becomes sparse crackles. When running the same [libao_sound_source] -> Audio card, the audio comes through unmolested. But the equalizer is not broken. [S]Mplayer can feed its audio through the equalizer no problem, as can mpg123. Here is where things get a bit...bizarre, though. After playing with libao's settings, I discovered that if I set buffer_time to any value between 49 and 97 (inclusive), the audio will play through correctly. Any other value causes the sparse static. But(!) there is another issue. When playing pianobar (which uses libao), the audio buffers in a "caterpiller style." It will immediately dump ~20-30 seconds of audio into the equalizer sink and block, wait until the buffer underruns, then dump another ~20-30 seconds of audio. I realize that this may be an issue with libao (or something else entirely), but I'm not knowledgeable enough to dig into the codebases myself. If it's not a pulse issue, please point me in the right direction. Thanks, --Sean
