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How to start a voice quality PESQ test?


How to start a voice quality PESQ test?

By : user3849000
Date : October 23 2020, 11:12 PM
To fix the issue you can do You will need a C compiler (The ITU PESQ reference implementation is actually C, so you don't need a C++ compiler, although both should work just fine)
For instance, on linux, you would enter the source directory and compile with gcc:
code :


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Voice quality issue in Android VoIP app with PJSIP

Voice quality issue in Android VoIP app with PJSIP


By : user2998396
Date : March 29 2020, 07:55 AM
hop of those help? This issue is not probably due to PJSIP or multi threads in Android. Actually the TLS tunnel we use to connect the mobile and the server is on TCP which is a bad choice for sending RTP data.
However, I don't have any idea how iOS and Mac manages to generate such a good sound quality.
code :
const int optionValue = 1;  // `int` is preferred
(void) ::setsockopt(m_ID, IPPROTO_TCP, TCP_NODELAY, &optionValue, sizeof(optionValue));
Poor Call Quality using Twilio Programmable Voice SDK

Poor Call Quality using Twilio Programmable Voice SDK


By : ichanika
Date : March 29 2020, 07:55 AM
this one helps. sorry it's taken me a while to get back to your question.
Firstly, the correct way to make the ongoing connection from your Programmable Voice SDK call is using TwiML . You were creating a call using the REST API, however you will have already have created the first leg of the call in the SDK and the TwiML forwards onto the second leg of the call, the person you dialled. Notably, you are billed for each leg of the call, not for two calls (legs can be of different length, for example, you could put the original caller through a menu system before dialling onto the recipient).
quality issue with offline voice-to-text using Sphinx4

quality issue with offline voice-to-text using Sphinx4


By : Mr. Kevin
Date : March 29 2020, 07:55 AM
will help you This turned out to be a trivial issue that's documented in the FAQ: "Q: What is sample rate and how does it affect accuracy"
code :
$ soxi GlobalNewsPodcast-20170828-CatastrophicFloodsRisin.wav

Input File     : 'GlobalNewsPodcast-20170828-CatastrophicFloodsRisin.wav'
Channels       : 2
Sample Rate    : 44100
Precision      : 16-bit
Duration       : 00:29:23.79 = 77783087 samples = 132284 CDDA sectors
File Size      : 311M
Bit Rate       : 1.41M
Sample Encoding: 16-bit Signed Integer PCM
$ sox GlobalNewsPodcast-20170828-CatastrophicFloodsRisin.wav GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono.wav remix 1,2
$ soxi GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono.wav

Input File     : 'GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono.wav'
Channels       : 1
Sample Rate    : 44100
Precision      : 16-bit
Duration       : 00:29:23.79 = 77783087 samples = 132284 CDDA sectors
File Size      : 156M
Bit Rate       : 706k
Sample Encoding: 16-bit Signed Integer PCM
$ sox GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono.wav -r 16k GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono16k.wav
$ soxi GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono16k.wav

Input File     : 'GlobalNewsPodcast-20170828-CatastrophicFloodsRisinMono16k.wav'
Channels       : 1
Sample Rate    : 16000
Precision      : 16-bit
Duration       : 00:29:23.79 = 28220621 samples ~ 132284 CDDA sectors
File Size      : 56.4M
Bit Rate       : 256k
Sample Encoding: 16-bit Signed Integer PCM
How to improve the android recorded voice quality

How to improve the android recorded voice quality


By : Aaron Silberman
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have the following code for recording audio/voice in android: , You have to increase your audioEncodingBitRate
code :
MediaRecorder recorder=new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setAudioEncodingBitRate(128000);
recorder.setAudioSamplingRate(44100);
Automatically Voice Recording when Voice starts and playback when the voice stops

Automatically Voice Recording when Voice starts and playback when the voice stops


By : Saeed Abdullatif
Date : March 29 2020, 07:55 AM
help you fix your problem Can anyone help me for the following :
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