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Understanding PDM Digital Audio - users.ece.utexas.edu
https://users.ece.utexas.edu/~bevans/courses/rtdsp/lectures/10_Data_Conversion/AP_Understanding_PDM_Digital_Audio.pdf
PDM, which uses only one bit to convey audio, is simpler in concept and execution than PCM. It has become popular as a way to deliver audio from microphones to the signal processor in mobile telephones. PDM is ideally suited for this task because it brings the benefits of digital, such as low noise and freedom from interfering signals, at low cost.
More about PDM - Audio Precision
https://www.ap.com/technical-library/more-about-pdm/
Interfacing PDM digital microphones using STM32 …
https://www.st.com/resource/en/application_note/dm00380469-interfacing-pdm-digital-microphones-using-stm32-mcus-and-mpus-stmicroelectronics.pdf
MAX98356 PDM Input Class D Audio Power Amplifier
https://datasheets.maximintegrated.com/en/ds/MAX98356.pdf
PDM Input Class D Audio Power Amplifier ˜˜ 19-6311; Rev 1; 7/13 General Description. The MAX98356 is a digital pulse-density modulated (PDM) input Class D power amplifier that provides Class . AB audio performance with Class D efficiency. This IC offers five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select ...
Stereo PDM to I2S/TDM Converter - Analog Devices
https://www.analog.com/media/en/technical-documentation/data-sheets/ADAU7112.pdf
How to interface to a PDM audio source? - Electrical ...
https://electronics.stackexchange.com/questions/404393/how-to-interface-to-a-pdm-audio-source
The code above is configured to produce 16-bit resolution output values, at a rate of 16,000 samples a second. It runs the PDM microphone at 64 times that frequency, which is 1.024 MHz. So she's using a 64 coefficient size filter, to convert each block of 64 PDM bits, to one 16 bit output sample. The code is using an I2S interface that reads ...
AN3998 Application note - STMicroelectronics
https://www.st.com/content/ccc/resource/technical/document/application_note/ca/18/be/bb/f8/53/47/a5/DM00040808.pdf/files/DM00040808.pdf/jcr:content/translations/en.DM00040808.pdf
音频接口：TDM，PDM，I2S，PCM 简介_上帝之子的技术博 …
https://blog.51cto.com/u_12810168/2450275
音频接口介绍,TDM，PDM，I2S，PCM 简介，【整理】SoCCPUMEDIATEKMT8516详解期间，看到T8516介绍中包含麦克风语音输入控制和连接的音频产品中包含I2Sx2（4个频道）、TDM（最多8个频道）和PDM输入（2个频道）等广泛的接口。不太熟悉TDM和PDM，所以去找找。tdm音频接口硬件基础知识（14）—I2S、PDM、TDM选什么 ...
MEMS Microphone Direct PDM Input via I2S to a …
https://www.ti.com/lit/an/sprac51/sprac51.pdf
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