Apple's USAC decoder (at least in Catalina and Big Sur) handles time-differential coding incorrectly and as a workaround use frequency-differential coding instead. The issue is tracked as FB8928108 at Apple Update requested by upstream Compile and tested on FreeBSD 13.0-CURRENT #0 r367711 (amd64)
Created attachment 220397 [details] Patch for exhale
Build and package info is available at https://gitlab.com/swills/freebsd-ports/pipelines/227493784
Committed, thanks!
A commit references this bug: Author: rene Date: Tue Dec 29 22:15:54 UTC 2020 New revision: 559619 URL: https://svnweb.freebsd.org/changeset/ports/559619 Log: audio/exhale: backport patch for MacOS compatibility PR: 251710 Submitted by: Daniel Engberg (maintainer) Changes: head/audio/exhale/Makefile head/audio/exhale/distinfo