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Adaptive Multi-Rate audio codec - Wikipedia
https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec#:~:text=The%20Adaptive%20Multi-Rate%20%28AMR%2C%20AMR-NB%20or%20GSM-AMR%29%20audio,with%20toll%20quality%20speech%20starting%20at%207.4%20kbit%2Fs.
AMR - Adaptive Multi-Rate Codec File
https://docs.fileformat.com/audio/amr/
What is an AMR file? The file with .amr extension is an audio data format relevant to Adaptive Multi-Rate audio codec; consists of a multi-rate narrowband speech codec which encodes narrowband signals at 4.75-12.2 kbit/s bit rate with toll quality speech starting at 7.4 kbit/s; uses link adaptation to select from one of eight different bit rates based.
AMR Audio Converter: Complete guide to AMR files[2021]
https://filmora.wondershare.com/video-editing-tips/amr-audio-converter.html
AMR is an abbreviation for Adaptive Multi-Rate Audio Codec. It is a technology that utilizes audio compression formats primarily for speech. A typical AMR speech codec will have a multi-rate of eight bitrate values that range from 4.75kb/s to 12.2 kb/s.
GSM Audio Codec: Vocoder: AMR, CELP etc .. » …
https://www.electronics-notes.com/articles/connectivity/2g-gsm/audio-codecs-vocoders-amr-celp.php
This is the main bit rate used for circuit switched GSM and UMTS, offering superior performance to the original AMR codec. 14.25 : Higher bit rate used to give cleaner speech and is particularly useful when ambient audio noise levels are high. 15.85
Adaptive Multi-Rate Wideband - Wikipedia
https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_Wideband
Adaptive Multi-Rate Wideband (AMR-WB) is a patented wideband speech audio coding standard developed based on Adaptive Multi-Rate encoding, using a similar methodology to algebraic code-excited linear prediction (ACELP). AMR-WB provides improved speech quality due to a wider speech bandwidth of 50–7000 Hz compared to narrowband speech coders which in general …
AMR Player, Free AMR audio player and AMR to MP3 or …
http://www.amrplayer.com/
AMR-NB (Adaptive Multi-Rate Narrowband) is a vocoder employed in low-bitrate applications like mobile phones. AMR is also a file format for storing spoken audio using the AMR codec. Many modern mobile telephone handsets will allow you to store short recordings in the AMR format, it should be remembered that AMR is a speech format and is ...
MP3 to AMR (Online & Free) — Convertio
https://convertio.co/mp3-amr/
Bitrate: 12.2 kbps ... Adaptive Multi Rate. This format was originally intended for voice compression and is able to change the bit rates of encoded audio data. AMR is actively used for encoding and decoding voice while its being transmitted over network channels. The format allows one to consider network capacity and adapt it to channel loads.
AMR to MP3 (Online & Free) — Convertio
https://convertio.co/amr-mp3/
Best way to convert your AMR to MP3 file in seconds. 100% free, secure and easy to use! Convertio — advanced online tool that solving any problems with any files. ... Select the bitrate range for the Variable Bitrate (VBR) MP3 file. Note that some legacy audio players may display incorrect audio file duration if VBR mode is used, in this case ...
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