Reminds me of the old IBM 'RECOVC' codec from around 2000 where they compressed Mel-bank speech. https://ieeexplore.ieee.org/document/7075313 https://ieeexplor

Reminds me of the old IBM 'RECOVC' codec from around 2000 where they compressed Mel-bank speech. https://ieeexplore.ieee.org/document/7075313 https://ieeexplore.ieee.org/document/7075313 All the patents around that are long-dead so good time to do an updated version I guess. If you wanted to do something similar but with way lower bitrates (e.g. 300bps), then look at the NRV codec: https://www.researchgate.net/publication/224209493_300_bps_noise_robust_vocoder https://www.researchgate.net/publication/224209493_300_bps_n...