Sound programming Guide

Imp Audio (voir imp Audio.h )

Audio module, including recording and playback, audio codec, volume and gain settings, e echo cancellation, automatic gain and other functions.

Presentation

• The sound function includes 5 modules: audio input, audio output, audio cancellation, audio encoding and audio decoding.

• Among them, audio input and audio output have the concept of device and channel. One of the MICs is considered a device, and a MIC can have multiple channel inputs.

• The same SPK is considered a breeding device, and an SPK can also have multiple channel outputs.

• The lunar version of the audio API only supports one channel per device.

• Echoa cancellation is found in the audio input interface and specific instructions are reflected in the description of the function.

• Audio encoding: The current audio API supports audio encoding in PT_G711A, PT_G711U and PT_G726. Si vous devez ajouter une nouvelle méthode d’encodage, vous devez enregistrer l’encodeur. formats

• Audio decoding: The current audio API supports audio decoding in PT_G711A, PT_G711U and PT_G726. Si vous devez ajouter une nouvelle méthode de décodage, vous devez enregistrer le décodeur. formats