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Questions tagged [amr]

The Adaptive Multi-Rate audio codec or AMR for short is a patented audio data compression scheme optimized for speech coding.

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Play RTP packets payload obtained from the mobile phone in a call service

I have developed a UMTS core network using a home nodeB (HNB) which the mobile phones (or UEs) can register on my network and get the required services such as call service. I have implemented all the required procedures for call service and I can…
morteza ali ahmadi
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How to play amr file (BLOB) from DB with VueJS and .NET?

I have some MP3 and amr files converted into Base64. I converted my audio files on this page: https://base64.guru/converter/encode/audio I installed an npm library, I show that it can play mp3 blob but amr file not. What should I do, which npm…
snotra634
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Encode amr with ffmpeg (libavcodec)

I would like to encode a simple pcm to amr using libavcodec. To begin with, I compiled ffmpeg and run the encode_audio example and it worked fine for the default Mp2 codec. Then modified the encode_audio example and replace AV_CODEC_ID_MP2 with…
Mohammadreza Rostam
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How to populate AudioStreamBasicDescription for AMR_WB playback?

I have an android device sending me audio in AMR_WB format with 16_000 sample rate and channel is mono. var asbd = AudioStreamBasicDescription() asbd.mSampleRate = Float64(sampleRate) // value: 16_000 asbd.mFormatID =…
brosahay
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Can ROS Gmaping be as good with big maps as Google's Cartographer?

I am trying to determine, if ros gmaping (http://wiki.ros.org/gmapping) could be effectively and reliably used to map out large maps. So far I did not have any success. On larger maps (100x100 m) sometimes comes out curved. To find other methods of…
Richard Brada
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Does Freeswitch plays .AMR files?

I want to play .amr files in freeswitch IVR.Is that possible? While checking freeswitch forums,i found out AMR is only for passthru mode.What is a passthru mode? Is there any way to over come this and play the AMR file in freeswitch? Any suggestions…
Sanju
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Any good (and preferably free) G722 \ G722.2 implementation?

I need to integrate those codecs for manual usage into Android. I don't want the platform APIs, since they won't support my VoIP needs. I need G722 and also G722.2 (supposed to be equivalent to AMR-WB). Do you know of any good implementation? Maybe…
SirKnigget
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Capture audio with AMR-NB encoding in UWP?

On the supported codecs page, AMR-NB is listed as one of the few encodings that is supported for both encode and decode on a variety of platforms. However, it is conspicuously absent from any of the AudioEncodingProperties "Create" methods, such as…
Jeff
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Codec that converts amr-wb multichannel file to mpeg3 or .wav needed

I've got Linux Ubuntu and ffmpeg version 4.3-2. It converts monochannel 16kHz 16kbit/s amr-wb files to wav without any problems, but when it comes to amr-wb multichannel files the output is: filename.amr: Operation not permitted I've already tried…
Uwe_98
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How to write to an AMR-WB file in multichannel mode with Python under linux from RTP PAYLOAD

I've successfully written the RTP-payload into an amr-file and it works fine, according to the answer written in this question. https://stackoverflow.com/questions/61961965/convert-rtp-payload-payload-type-107-amr-wb-16khz-1channel-to-wav Now I…
Uwe_98
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Convert RTP Payload (payload type 107, AMR-WB 16khz 1Channel) to .wav

I'm working in Python 3.6 under Linux Ubuntu and I used the Scapy lib to extract data from a bin file which contained the following stack: IP/UDP/RTP. The RTP-PAYLOAD TYPE is 107 (dynamic), a=rtpmap:107 AMR-WB/16000/1. I put it into a file in raw…
Uwe_98
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Android AMR-WB encoding issue

I am trying to use AMR-WB encoding feature of Android Oreo to encode live microphone capture PCM using AudioRecorder. The encoding works without any exception but the encoded voice data seems not perfect. Here is how the code looks like: My…
Babu James
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Recording sound in android

I'd like to know how to record sound for a specific amount of time, without saving it to a file - holding in a byte stream for example. Also, if possible, make it look like an AMR file. I've tried to search google, and also wrote some code myself,…
Michael S.
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If I have an original audio frame in Android, how to encode it using AMR or AAC?

If I have an original audio frame in Android, how to encode it using AMR AAC, or any other encoder?
limitfan
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FFMPEG amr to mp3 conversion problem

Hey all, I'm having the following issue converting amr files to mp3 files. When I try to do the converstion I get the following: FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers built on Jan 24 2011 12:00:26 with gcc 4.4.5 …
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