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What is PCM Audio? [Format Difference. Expert Explaned]
https://samplerateconverter.com/educational/pcm-audio
PCM is abbreviation of Pulse Code Modulation. What is PCM audio output? PCM audio output is hardware interface (connector and its controller). Example: HDMI, SPDIF, Toslink. The interface is capable to transmit digital audio …
PCM (digital audio) interface_ljclx1748的专栏-程序员ITS203
https://its203.com/article/ljclx1748/8614963
Although abbreviation PCM stands for Pulse Code Modulation, we are understanding it as general digital audio processing with volume samples generated in continuous time periods. The analog signal is recorded via analog to digital converters (ADC). The digital value (de-facto a volume at a specific time) obtained from ADC can be further processed.
PCM Codec datasheet
https://www.ti.com/lit/ds/symlink/tlv320aic1110.pdf
The PCM codec is an analog-digital interface for voice band signals designed with a combination of coders and decoders (codecs) and filters. It is a low-power device with companding options and programming features, and it meets the requirements for communication systems, including the cellular phone. The device operates in
ASoC Digital Audio Interface (DAI) — The Linux Kernel ...
https://www.kernel.org/doc/html/v4.14/sound/soc/dai.html
PCM¶ PCM is another 4 wire interface, very similar to I2S, which can support a more flexible protocol. It has bit clock (BCLK) and sync (SYNC) lines that are used to synchronise the link whilst the Tx and Rx lines are used to transmit and receive the audio data. Bit clock usually varies depending on sample rate whilst sync runs at the sample rate.
PCM Audio Design Guide - Paoli
https://www.paoli.cz/out/media/HUAWEI%20LGA%20Module%20PCM%20Audio%20Design%20Guide-V100R001_04(1).pdf
transmit and receive digital audio data, and uses the PCM interface as part of the audio front end; therefore an external codec is easily allowed to be used instead of the internal codec. For example, through the PCM you could connect Huawei LGA module to a Bluetooth device. Huawei LGA module has one PCM port.
MEMS microphone Interfaces – Listen, Inc.
https://www.listeninc.com/products/audio-testing-hardware/electronic-interfaces/mems-microphone-interfaces/
The PQC-3048 MEMS digital microphone interface is designed for high volume production line testing of MEMS microphones. It converts, in the digital domain, the 1-bit audio data returned by the device under test to 24 bit PCM audio at 48kHz sample rate and supplies the required clock signal and DC power for testing. Features include:
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
PCM (Pulse Code Modulation): a system for representing a sampled signal as a series of multi-bit words. This is the technology used in audio CDs. PDM (Pulse Density Modulation): a system for representing a sampled signal as a stream of single bits. Sampling rate is the rate at which a signal is sampled to produce a discrete-time representation.
I²S - Wikipedia
https://en.wikipedia.org/wiki/I%C2%B2S
Serial. I²S ( Inter-IC Sound, eye-squared-ess ), is an electrical serial bus interface standard used for connecting digital audio devices together. It is used to communicate PCM audio data between integrated circuits in an electronic device. The I²S bus separates clock and serial data signals, resulting in simpler receivers than those required for asynchronous communications systems …
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