FM1388 universal voice processing module completes the processing of 1-3 digital/analog microphone voice signal, realizes the functions of noise reduction, echo cancellation, remote pickup and source recognition. The product includes three parts: hardware circuit, speech processing software and parameter matching setup.

Human beings use two ears and one mouth to process sounds.

Even if the brain is on standby, people's ears are always listening.

Ears can adapt to environmental noise and extract key information.

People can ignore / eliminate their voices.

To enable the machine to realize human's ability to process sound.

Must have more than 2 microphones.

• sustainable detection and listening.

Even if the main processor is asleep, it can also handle.

Noise and echo cancellation

1. microphone input:

A) or analog microphone 1, up to 2.

B or digital microphone can be connected to 1, 2, up to 3 at most.

C) analog microphone, digital microphone can not be mixed.

2. power supply:

A) can be connected to 5V or 3.3V. There are LDO. inside.

3. clock:

A) internal clock, or external clock.

4. control port: I2C and SPI provide connection to connect any master controller.

5. audio input / output:

A) input: analog or I2S provide connectivity.

B) output: analog or I2S provide connectivity.

6. reset: there are connections to connect any main controller.

7.I2C maximum rate 400KHZ; SPI maximum rate 28MHZ; I2S maximum rate 12.288MHZ

Update