All Questions
Tagged with i2s microphone
10
questions
0
votes
1
answer
109
views
I2S communication WS line function
I was reading the official I2S documentation from Philips and I have some doubts on its functioning (I'm new to this protocol with respect to PDM).
The WS line is used to select either the left or ...
- 3
0
votes
0
answers
259
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Can I connect multiple different devices via a single I2S interface?
I am using a microcontroller with only one I2S interface. I am using MAX98357A which has 1 sound chip. There is 1 microphone, SPH0645. Can I connect these ICs to the same line provided that I cannot ...
- 51
0
votes
1
answer
909
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Raspberry Pi I2S speaker and microphones on the same connection
I am planning on buying an I2S speaker amplifier for my Raspberry Pi project. I already have the microphones for it. My question is whether the I2S interface can support speaker and mic at the same ...
- 75
2
votes
1
answer
1k
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How to remove INMP441 MEMS microphone low-frequency noise
I have code that allows me to record I2S audio from the INMP441 MEMS microphone module using an ESP32. The data is read from the data out pin of the device.
When I take the Fourier transform of this ...
- 66
0
votes
1
answer
2k
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Unable to get any kind of audio from I2S INMP441 omnidirectional microphone on ESP32 devboard
I am trying to get an I2S INMP441 omnidirectional microphone module to interface with an ESP32 devboard. I have been unable to get any kind of information from it. I have tried multiple ESP32s and ...
- 3
1
vote
0
answers
199
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I2S slave communication without an MCU - how to generate the clocks?
I am designing an audio amplifier circuit which uses an I2S digital MEMS mic (INMP441) for picking up voice signals and an I2S class-D amplifier (MAX98357A) for amplification.
I have attached the ...
- 87
1
vote
1
answer
1k
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How does a channel know to drive in I2S TDM mode?
I'm learning I2S right now and I am curious about working in an environment where 8 or so audio devices could be in the setup.
I understand TDM mode would allow the Controller (Master in legacy terms) ...
2
votes
1
answer
560
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The SPH0645LM4H-B microphone seems to output all negative values via I2S
Attached is an image from the analyzer. I am afraid that the I2S is shifted one bit, because as it stands, the MSB bit is always high, all samples come back 0x3nnnn (18-bits, so MSB bit is on the left)...
- 558
0
votes
2
answers
2k
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Digital Microphone : I2S data output
I have been playing around with some digital microphones, which have an I2S interface. I managed to get it working (Arduino board with small I2S mems board). At least, I think I did.
When reading the ...
1
vote
3
answers
2k
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Is it possible to directly interface a MEMS ADMP541 microphone over I2S with any Microcontroller?
I have bought a MEMS ADMP541 Evalution kit to record voice samples with arduino controller
MEMS microphone will produce digital o/p , I2S communication protocal
My question is should I directly ...
- 13