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Old 14th February 2019, 21:17   #1471  |  Link
Mr.Radar
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Join Date: Nov 2002
Location: Minnesota, USA
Posts: 34
Quote:
Originally Posted by Phanton_13 View Post
I think that I misled wen I reference DRM, I was referencing to Digital Radio Mondiale where xhe-aac is one of the codecs used.
For those who are unaware, Digital Radio Mondiale is the digital broadcasting standard used on the shortware radio bands. Due to the narrow bandwidth of shortwave broadcast channels and the high amount of error correction required to avoid dropouts the usable bitrates are very low. Here is a 2017 comparison between xHE-AAC and Opus at those bitrates. More recent versions of libopus should produce significantly more competitive results in the speech-focused samples (libopus 1.3 enabled wideband audio down to 9 kbps) but on music samples xHE-AAC would probably retain the edge since Opus at very low bitrates is effectively operating mostly as a speech codec in its SILK mode.
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