On Friday, I uploaded an initial package for squishyball to Debian experimental. It's now in the NEW queue.
squishyball is a command-line tool to help you compare two audio files. It
supports basic A/B testing, A/B/X testing and X/X/Y ("triangle") tests to
help rule out various selection, confirmation and ordering biases. I'm using
it to figure out the optimal lossy audio codec and bitrate to encode my music
It can be a little fiddly to use if you also use pulseaudio. I specify a
specific ALSA device via
-d, identified via
aplay -L, and keep
running in a separate window to adjust volume if necessary, since GNOME's
volume control shortcuts effect the pulseaudio mixers only. This way I can
use headphones via the onboard analog stereo output and leave my desktop
session configured to use HDMI output.
For the time being, I've disabled support for the OPUS audio format. This is to
prevent squishyball (GPL) from linking against
libssl, which is pulled in by
libopusfile. A future version of the package might manage to make this work.