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Asterisk 1.6 playing .wav files as .gsm - Asterisk Support ...
https://community.asterisk.org/t/asterisk-1-6-playing-wav-files-as-gsm/30697
Hi, I am using asterisk 1.6.0.17. I loaded a wav file into the system but when i play the file it is played as a gsm. I notice a bit of quality is lost. What i tried to go is unload the format_gsm.so and format_wav_gsm.so from Asterisk. When i unload these the file plays as a .slin .
GSM Audio Codec: Vocoder: AMR, CELP etc .. » …
https://www.electronics-notes.com/articles/connectivity/2g-gsm/audio-codecs-vocoders-amr-celp.php
GSM Audio Codec / Vocoder Audio / voice codecs and vocoders convert the voice signals required to be transmitted over a GSM link into a compact digital format. Voice codec technologies used with GSM include LPC-RPE, EFR, Full Rate, Half Rate, AMR codec and AMR-WB codec & CELP, ACELP, VSELP, speech codec technologies.
Audio Codecs — Omnipacket
https://docs.omnipacket.com/docs/guide/codecs.html
VSDC Free Audio Converter 1.6.5.353 Download - Codecs.com
https://www.free-codecs.com/download/vsdc_free_audio_converter.htm
The most popular audio codecs are supported too, including AAC, MP3, GSM, ADPCM, and Vorbis. It is also possible to open and convert M3U files or to download music from the Internet. If you are a beginner and find VSDC Free Audio Converter too complex or you just want to save time, you can use the program’s predefined export presets, which ...
Voice Codecs - GL
https://www.gl.com/voice-codecs.html
GSM EFR GSM-EFR (6.60) is an improved and hence the Extended version of GSM-FR (6.10) codec. With sampling frequency of 8000 samples/sec and frame size of 31 bytes it achieves the bit rate of 12.2kbps with an encoding fixed frame length of 20 ms. Codec supports Voice Activity Detection (VAD) to allow saving of bandwidth. GSM HR
One-Way Sound and No Call Recordings after Upgrade to ...
https://community.freepbx.org/t/one-way-sound-and-no-call-recordings-after-upgrade-to-asterisk-1-8/12400
I’m a newbie, and still decided to go through the painstaking process of upgrading from Asterisk 1.6 to 1.8 because I thought it would make the ilbc or gsm codec work. The ilbc and gsm codecs still don’t work, and now I have 2 new problems!! Hours later and I’m 8 steps back! UGH! 1----> On all calls, the person on the other end can hear me, but I hear nothing but dead air …
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