[woodson]

The difference is that Codec2 encodes audio at 8 kHz sampling rate while this TSAC codec encodes audio at 44.1 kHz, which makes a pretty big difference in terms of audio fidelity.

[femto]

Also, codec2 is a vocoder, meaning it is specialised to compressing speech. Give it any old 8kHz sampled audio and it probably wouldn't sound so good.