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Codec de áudio Adaptive Multi-Rate - Adaptive Multi-Rate ...
https://pt.abcdef.wiki/wiki/Adaptive_Multi-Rate_audio_codec#:~:text=O%20codec%20de%20%C3%A1udio%20Adaptive%20Multi-Rate%20%28AMR%2C%20AMR-NB,compress%C3%A3o%20de%20%C3%A1udio%20otimizado%20para%20codifica%C3%A7%C3%A3o%20de%20voz.
Codec de áudio Adaptive Multi-Rate - Adaptive Multi-Rate ...
https://pt.abcdef.wiki/wiki/Adaptive_Multi-Rate_audio_codec
O codec de áudio Adaptive Multi-Rate ( AMR , AMR-NB ou GSM-AMR ) é um formato de compressão de áudio otimizado para codificação de voz . O codec de voz AMR consiste em um codec de voz de banda estreita de múltiplas taxas que codifica sinais de banda estreita (200–3400 Hz) em taxas de bits variáveis que variam de 4,75 a 12,2 kbit / s com voz de …
GSM Audio Codec: Vocoder: AMR, CELP ... - Electronics …
https://www.electronics-notes.com/articles/connectivity/2g-gsm/audio-codecs-vocoders-amr-celp.php
The AMR codec was adopted by 3GPP in October 1988 and it is used for both GSM and circuit switched UMTS / WCDMA voice calls. The AMR codec provides a variety of options for one of eight different bit rates as described in the table below. The bit rates are based on frames that are 20 millisceonds long and contain 160 samples. The AMR codec uses a variety of different …
AMR Audio Codec SDK Libraries - LEADTOOLS
https://www.leadtools.com/sdk/multimedia/codecs/amr
Adaptive Multi-Rate compression is optimized to encode and decode speech audio. It is widely used within GSM and UMTS . The LEAD AMR Audio Codec offers: Full support for encoding, decoding, and transcoding AMR-compressed audio data adhering to ISO/IEC 13818-7 standard. Eight source rates from 4.75 kbps to 12.2 kbps.
CODECPRO AMR CODEC - optimized codec solutions for ...
https://codecpro.com/en/codecs/codec_specifications/10/AMR
CODECPRO AMR CODEC3GPP MANDATORY STANDARD CODEC. AMR was designed to allow transcoder-free connectivity between GSM, US-TDMA and PDC networks; AMR is the 3GPP mandatory standard codec for narrowband speech over GSM, WCDMA, GPRS and EDGE networks. AMR operates at 8 bitrates in the range of 4.75 to 12.2 kbps and was specifically designed to …
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