The fact that AMR uses a very complex analysis-synthesis loop (with subtle differences between its 8 bit rate modes) makes speaker recognition much harder (an

The fact that AMR uses a very complex analysis-synthesis loop (with subtle differences between its 8 bit rate modes) makes speaker recognition much harder (and therefore more error prone), but perhaps they decided that they can live with the higher error rates. Future voice communications will use neural audio codecs which can achieve higher audio quality at low bitrates, but the issue with voice cloning remains, as just like AMR it’s synthetic. Fraud detection from detecting stress in your voice however has no scientific basis, no matter how high the audio quality. There are tons of reasons for someone to be stressed that have nothing to do with fraud…