GSM-AMR (AMR-NB) Vocoder and Audio Codec (GSM-AMR (AMR-NB) Speech and Audio Compression and Processi
GAO Research is the world leading provider of GSM-AMR (AMR-NB) Vocoder, standard used mainly in 3rd generation mobile telephony devices to compress toll-quality speech at 8000 samples/second. GAO¡¯s GSM-AMR codec has eight basic bit rates, 12.2, 10 ......