1、Android音频系统分析--专业术语简要解析

专业术语

                                                                                                                                                                                                                                 

ASLA - Advanced Sound Linux Architecture

OSS - 以前的Linux音频体系结构,被ASLA取代并兼容

Codec - Coder/Decoder

I2S/PCM/AC97 - Codec与CPU间音频的通信协议/接口/总线

DAI - Digital Audio Interface 其实就是I2S/PCM/AC97

DAC - Digit to Analog Conversion

ADC - Analog to Digit Conversion

DSP - Digital Signal Processor

Mixer - 混音器,将来自不同通道的几种音频模拟信号混合成一种模拟信号

Mute - 消音,屏蔽信号通道

采样频率 - ADC的频率,每秒采样的次数,典型值如44.1KHZ

量化精度 - 比如24bit,就是将音频模拟信号按照2的24次方进行等分

SSI - Serial Sound Interface

DAPM - Dynamic Audio Power Management

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