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pjsua_media_config Struct Reference (2.10)
https://www.pjsip.org/pjsip/docs/html/structpjsua__media__config.htm#:~:text=Specify%20audio%20frame%20ptime.%20The%20value%20here%20will,Specifying%20lower%20ptime%20will%20normally%20reduce%20the%20latency.
Prefer variable ptime (audio frame lengths) · Issue #2300 ...
https://github.com/w3c/webrtc-pc/issues/2300
Closed. Prefer variable ptime (audio frame lengths) #2300. henbos opened this issue on Sep 13, 2019 · 8 comments. Assignees. Labels. PR exists WebRTC Extensions. Projects. WebRTC 1.0 to PR. Comments.
#680 (Detection of handset's frame ptime in APS) – pjsip ...
https://trac.pjsip.org/repos/ticket/680
With APS, devices may return different audio frame ptime (either 10ms or 20ms), depending on the handset or in some cases perhaps even the firmware version of the same handset. Details can be found here (Thanks Tonjun Banaag for the report).
pjsua_media_config Struct Reference (2.10)
https://www.pjsip.org/pjsip/docs/html/structpjsua__media__config.htm
Specify audio frame ptime. The value here will affect the samples per frame of both the sound device and the conference bridge. Specifying lower ptime will normally reduce the latency. Default value: PJSUA_DEFAULT_AUDIO_FRAME_PTIME
#393 (Added configuration to set basic audio frame length ...
https://trac.pjsip.org/repos/ticket/393
In pjsua-lib, audio frame length was controlled by PTIME macro in pjsua_media.c, which value is hard-coded to 20 ms.Some application may want to set different value to get lower latency.
pj::MediaConfig Struct Reference (2.10)
https://www.pjsip.org/pjsip/docs/html/structpj_1_1MediaConfig.htm
Specify audio frame ptime. The value here will affect the samples per frame of both the sound device and the conference bridge. Specifying lower ptime will normally reduce the latency. Default value: PJSUA_DEFAULT_AUDIO_FRAME_PTIME
Adaptive-ptime Field in RTCConfiguration - Chrome Platform ...
https://chromestatus.com/feature/5409864127873024
Feature: Adaptive-ptime Field in RTCConfiguration. Adds the adaptivePtime flag to the RTCConfiguration dictionary, which indicates that the audio frame length should be adaptive. That is, the frame length is allowed to change during the call, so as to optimize the trade-off between bandwidth consumption and latency, according to the ...
Digital audio concepts - Web media technologies | MDN
https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Audio_concepts
Each audio frame is a data record that contains the samples for all of the channels available in an audio signal. The size of an audio frame is calculated by multiplying the sample size in bytes by the number of channels, so a single frame of stereo 16-bit audio is 4 bytes long and a single frame of 5.1 floating-point audio is 24 (4 bytes per ...
python - What does a audio frame contain? - Stack Overflow
https://stackoverflow.com/questions/3957025/what-does-a-audio-frame-contain
An audio frame, or sample, contains amplitude (loudness) information at that particular point in time. To produce sound, tens of thousands of frames are played in sequence to produce frequencies. In the case of CD quality audio or uncompressed wave audio, there are around 44,100 frames/samples per second.
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