Note correction: Nicholas D Steeves <nsteeves@gmail.com> writes: > I took a look at Arch's package which appears to support AptX via > libldac ( https://github.com/EHfive/ldacBT ), and Apache 2.0 licensed > library. Is there any reason our pulseaudio-module-bluetooth can't > enable this functionality? Ah, it seems I was out of date and confusing technologies. See https://www.androidauthority.com/sony-ldac-codec-790690/ https://www.soundguys.com/ldac-ultimate-bluetooth-guide-20026/ tldr; AptX is a Qualcomm technology, and ldac is a Sony technology upstreamed to AOSP (Android Open Source Project). IIRC AptX is non-DFSG free and/or has patents blocking it, but we can add ldac support to our pulseaudio-module-bluetooth package. As far as I can tell DSEE HX is Sony magic sauce for resampling to a higher bitrate
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