[Silicon Labs Development Kit Review] +PDM Stereo Microphone SPK0641HT4H-1

anger0925

[Silicon Labs Development Kit Review] +PDM Stereo Microphone SPK0641HT4H-1 [Copy link]

 

SPK0641HT4H-1 is a miniature, high performance, low power digital microphone . With single-bit PDM output, using Knowles ' high performance SiSonicTM MEMS technology, SPK0641HT4H-1 consists of an acoustic sensor, a low noise input buffer and a sigma-delta modulator.

Hardware Interface

Enable switch

Interfacing with the processor

Software Interface

Enable switch on

Install the PDM MIC driver

Click install

Add task function

Calculate the sound level by obtaining environmental sound information.

It's still very quiet.

When the drone flies over, the sound reaches 80 degrees , and it is quite loud. It is obviously a noise.

According to the hearing of ordinary people:

0 - 20 decibels Very quiet, almost imperceptible

20-40 decibels quiet, like a whisper

40-60 decibels Normal indoor conversation

60-70 decibels is noisy and damaging to the nerves.

70-90 decibels is very noisy and can damage nerve cells.

90-100 decibels of noise will increase and cause hearing loss.

dql2016

Learned

soso

Fun :)