The AMR file type is primarily associated with ‘Adaptive Multi-Rate ACELP Codec’. Speech encoding format used in GSM telephony. The AMR ACELP coder will lower the compression rate as cellular interference increases, thus enabling more error correction to be applied. It also is used to harmonize the codec standards amongst different cellular systems. (ACELP = […] Learn more about amr
QCLEP, which may be known under a different name (Qualcomm PureVoice), is an audio file by PureVoice. It originally has been developed as a vocoder in 1994 in order to enhance the quality of speech in the CDMA networks. Later on, it has been replace by EVRC which is provides even better quality of speech, […] Learn more about qcelp