Questions tagged [mems-microphone]
The mems-microphone tag has no summary.
56 questions
0 votes
0 answers
46 views
Multiple pin MEMS microphone to be used with PiP TRRS 3.5mm jack, could this work?
I'd like to use a MEMS microphone as external wired microphone for a smartphone, using the 3.5mm TRRS plug-in-power jack. Said MEMS microphone can use up to 3 V, with 2.2 V being ok too, and as far as ...
- 77
1 vote
1 answer
86 views
Multichannel I2S digital MEMs microphone array clipping and bias
I'm using a multichannel I2S linear array of MEMs microphones Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H connected via i2s to a MiniDsp MCHStreamer Kit soundcard. I'm recording the input from ...
4 votes
3 answers
245 views
Op-amp schematic microphone connection questions
Looking at the schematic of the X-NUCLEO-AMICAM1, I’m trying to understand why a quad op-amp is used for two microphones. Why isn’t there a single input and output for each microphone? What is this ...
- 61
1 vote
2 answers
129 views
Protocol of MEMS digital microphone, and if microcontroller can detect it is missing
I have a datasheet for a MEMS microphone. The way I interpret it, you have to tie L/R low to get DATA1, high to get DATA2. From another source, I guess that it's basically made to be use in a pair. I ...
- 411
0 votes
1 answer
256 views
Trying to drive a I2S MEMS microhpone (SPH0645LM4H) using RP2040 PIO but timing seems bad and I dont get any audio back
So I want to connecte an i2s MEMS microhpone to a RP2040. I have made a PIO program that looks like this: ...
0 votes
1 answer
168 views
MEMS microphone pinout identification [closed]
I wanted to play with MEMS micrphones. I didn't wanted to wait for my order to arrive so I decided to take away some microphones in some computers in the dumpster. I removed it using hot air to find a ...
- 300
3 votes
2 answers
662 views
MEMS microphone encode to AAC low performance
I am looking for a solution to encode the data from a MEMS microphone to AAC LC. I have a small microcontroller that is very low power but that lacks the RAM required for encoding so I am looking for ...
0 votes
0 answers
49 views
Interfacing mems digital microphone with ESP32 [duplicate]
The datasheet of the microphone mentions: Source termination resistors are used to match the impedance of the source and the trace. The component values of the termination resistors depend on the ...
- 61