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AMR-WB, Adaptive Multi-Rate - Wideband Speech Codec
https://www.loc.gov/preservation/digital/formats/fdd/fdd000255.shtml
File type signifiers and format identifiers Notes Format specifications RFC 4867 (RTP Payload Format and File Storage Format for the Adaptive Multi-Rate [AMR] and Adaptive Multi-Rate Wideband [AMR-WB] Audio Codecs) is available online from IETF at more than one site and in more than one format:
AMR - Adaptive Multi-Rate Codec File
https://docs.fileformat.com/audio/amr/
The AMR( Adaptive Multi-Rate ) is an audio format; widely used in various mobile applications and devices, typically in audio player/recorder or in VoIP kind of applications. AMR can be further classified as: AMR-NB( NarrowBand ) AMR-WB( WideBand ) Usually, AMR refers to AMR-NB. The AMR file format has the following structure:
AMR-WB+ (Extended Adaptive Multi-Rate Wideband) - VoiceAge
http://www.voiceage.com/AMR-WBplus.html
AMR-WB+ Developed jointly by Ericsson, Nokia and VoiceAge, the AMR-WB+ (Extended Adaptive Multi-Rate Wideband) speech and audio codec is the 3GPP-recommended hi-fi audio codec for MMS, PSS and MBMS services over GSM and WCDMA networks. It is …
What is Adaptive Multi-Rate Wideband (AMR-WB)?
http://www.dialogic.com/glossary/adaptive-multi-rate-wideband-amr-wb
Adaptive Multi-Rate Wideband (AMR-WB) is a patented wideband speech audio coding standard developed based on Adaptive Multi-Rate encoding, using similar methodology as algebraic code excited linear prediction (ACELP).
GSM Audio Codec: Vocoder: AMR, CELP etc .. » …
https://www.electronics-notes.com/articles/connectivity/2g-gsm/audio-codecs-vocoders-amr-celp.php
The AMR-WB codec has a 16 kHz sampling rate and the coding is performed in blocks of 20 ms. There are two frequency bands that are used: 50-6400 Hz and 6400-7000 Hz. These are coded separately to reduce the codec complexity. This split also serves to focus the bit allocation into the subjectively most important frequency range.
AttributeError: payload_type · Issue #1 · Spinlogic/AMR …
https://github.com/Spinlogic/AMR-WB_extractor/issues/1
python pcap_parser.py -i rtp-only.pcap -o audio.amr -c wb-amr -f ietf. The audio inside the audio.amr file is very clear when listening it with VLC. I will close this close this issue if there are no further comments in the next few days.
File extension : Convert AWB to MP3 - Convert AMR-WB …
https://conversionai.com/file/audio/awb-amr-wb-audio-file/mp3-mp3-audio-file
File extension AMR-WB Audio File (.AWB) The .AWB file extension belongs to an audio format known as 'Adaptive Multi-Rate Wideband'. This format is supported by many mobile phone manufactures and is the format used in creating Nokia True Tones. The mime type for file extension AWB - AMR-WB Audio File is audio/AMR-WB
ARC Audio AMR-WB (G.722.2) Encoder and Decoder | …
https://www.synopsys.com/dw/ipdir.php?ds=arc_audio_amrwb_codec
AMR-WB is defined in ITU standard G.722.2 and referred to as wideband coding of speech using Adaptive Multi-Rate Wideband. Compared to AMR-NB (300-3400Hz) AMR-WB has a much wider bandwidth (50-7000Hz) and provides a much better audio quality. Supported Cores AS211SFX AS221BD EM5D, EM7D EM9D, EM11D ARC Audio AMR-WB (G.722.2) Encoder/Decoder
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