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io-audio - QNX
https://www.qnx.com/developers/docs/7.1/com.qnx.doc.neutrino.utilities/topic/i/io-audio.html
The path to the acoustic sample player directory. ASD AFM only. ... See “ Understanding audio ducking” in the “Audio Concurrency Management” chapter in the QNX Neutrino Audio Developer's Guide. ms_frag_period: sw_mixer_ms (when the local playback device is a PCM Software Mixer device) The fragment size, in milliseconds, to use for audio ...
Multimedia Player Developer's Guide - qnx.com
https://www.qnx.com/download/download/26223/Multimedia_Player_Developers_Guide.pdf
TableofContents AboutThisGuide .....5
About This Guide - BlackBerry QNX
https://www.qnx.com/developers/docs/6.3.0SP3/neutrino/audio/about.html
The key components of the QNX Audio driver architecture include: io-audio Audio system manager. deva-ctrl-*.so drivers Audio drivers. For example, the audio driver for the Ensoniq Audio PCI cards is deva-ctrl-audiopci.so. For more information, see "Audio drivers (deva-*)" in the Utilities Summary chapter of the QNX Neutrino Utilities Reference.
QNX Sound Architecture
https://www.qnx.com/developers/docs/7.1/com.qnx.doc.neutrino.audio/topic/architecture_QSA.html
QNX Sound Architecture. In order for an application to produce sound, the system must include several components. ... QSA also provides audio concurrency management that can manage audio ducking, audio preemption, and volume ramping. ... If you want to jump in right away, see the examples of a “wav” player and a “wav ...
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