libpulsedsp 1:13.99.1-1ubuntu3.14 (arm64 binary) in ubuntu focal

 PulseAudio, previously known as Polypaudio, is a sound server for POSIX and
 WIN32 systems. It is a drop in replacement for the ESD sound server with
 much better latency, mixing/re-sampling quality and overall architecture.
 .
 This package provides the pre-load library used to redirect applications
 using OSS through pulseaudio.