This Adaptive Multi-Rate Narrowband (AMR-NB) GSM
speech transcoder is a codec with 4.75 - 12.2 bit rate range. based on code excited linear predictive (ACELP) model, the codec is fully compliant to the ETSI GSM 06.90 specification.
This speech coder is mainly used for toll quality speech compression in the 2nd+ generation mobile telephony applications....view full
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