Package: sox Version: 14.4.2+git20190427-3.5 Severity: normal Dear Maintainer,
When `-t` is not specified then sox attempts to probe the audio driver as described at https://groups.google.com/g/linux.debian.bugs.dist/c/jCqdwFWPUKk/m/xi1AThVtMwkJ According to the list in that discussion, pulseaudio is the first driver to be probed on Linux. If libsox-fmt-pulse is not installed, then the probe fails with the error `play WARN alsa: can't encode 0-bit Unknown or not applicable`, and there is an audible pop glitch before the actual audio is played. $ play -t raw -r 48k -e signed -b 16 -c 1 dummy play WARN alsa: can't encode 0-bit Unknown or not applicable (note libsox-fmt-pulse was not installed by default on my system, the alsa driver was, so this warning and audio glitch would occur every time by default) -- System Information: Debian Release: 12.0 APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.19.0-1-amd64 (SMP w/16 CPU threads; PREEMPT) Kernel taint flags: TAINT_WARN, TAINT_UNSIGNED_MODULE Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages sox depends on: ii libc6 2.36-9 ii libsox-fmt-alsa 14.4.2+git20190427-3.5 ii libsox-fmt-base 14.4.2+git20190427-3.5 ii libsox3 14.4.2+git20190427-3.5 sox recommends no packages. Versions of packages sox suggests: pn libsox-fmt-all <none> -- no debconf information