describe the audio codec MELP AND SELP.

The key WCD9335 functions include the following: 1.Serial low-power interchip media bus (SLIMbus) for access to all on-chip digital audio channels; inter-IC sound (I 2 S) accesses fewer paths, but maintains compatibility with earlier integrated circuits (ICs). 2.Six analog input ports and seven analog output ports 3.Six audio analog-to-digital converters (ADCs) and seven digital-to-analog converters (DACs) 4.Six digital microphone inputs (three clock/data pairs) 5.Active noise cancellation (ANC

FLAC是一种免费的无损压缩音频格式，支持流和存档。 FLAC项目维护格式，并为多个流行的音频播放器提供参考编码器/解码器和输入插件。

SPI with Audio Codec

AudioCODEC基本知识及应用，很好的资料，里面很多专业术语的解释

AKM audio codec AK4366 for Smartphone design

本文目的帮助理解音频系统ALSA中的dapm机制建立和触发过程，在这之中，涉及到音频路径的搭建和选择（相信这部分对于大家来说更有应用意义）。在dapm机制深入分析中，会展现alsa设计者的各种理念及实现技巧，很多细节上的考虑和处理值得我们去学习。

STM32例程Tutorial 28 - I2S Audio Codec - CS43L22.7z

The WCD9335 is a stand-alone high fidelity (hi-fi) audio codec IC that supports the Qualcomm Technologies, Inc. (QTI) multimedia solutions, including the APQ8096SGE chipset. The key WCD9335 functions include the following:  Serial low-power interchip media bus (SLIMbus) for access to all on-chip digital audio channels; inter-IC sound (I2S) accesses fewer paths, but maintains compatibility with earlier integrated circuits (ICs).  SoundWire interface for driving WSA8810 or WSA8815 speaker amplifiers  Six analog input ports and seven analog output ports  Six audio analog-to-digital converters (ADCs) and seven digital-to-analog converters (DACs)  Six digital microphone inputs (three clock/data pairs)  Multibutton headset control (MBHC) for smart accessory detection  Digital processing includes the following:  Microphone activity detection (MAD) detecting audio, ultrasound, and beacon activity  Qualcomm® Voice Activation subsystem  Active noise cancellation (ANC)  Integrated analog support reduces bill of materials (BOM) and area:  Microphone bias outputs (x4)

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