A Very Low-Bitrate Codec for Speech Compression
https://github.com/google/lyra/
Audio sample from https://www.youtube.com/watch?v=ERLnYhPohMA
(Russian language)
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Encode:
./encode-linux-static-x86_64 --input_path="/path/to/original-mono-16000.wav" --output_dir=/path/to/your/encode/dir/ --bitrate=3200
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Decode:
./decoder-linux-static-x86_64 --encoded_path="/path/to/original-encoded-bitrate-3200.lyra" --output_dir=/path/to/your/decode/dir/ --bitrate=3200