Going by the graph in the datasheet, the microphone is more sensitive to higher frequencies. I guess the noise is more of a problem with the microphone
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- Sat Feb 17, 2024 7:47 am
- Forum: Sample Code
- Topic: SPH0645LM4H with ESP32-S3
- Replies: 2
- Views: 30654
Re: SPH0645LM4H with ESP32-S3
In my case at least, it seems to pick up a lot of noise. At times, the fan in the room is louder than my voice, even when I'm right next to it.
Going by the graph in the datasheet, the microphone is more sensitive to higher frequencies. I guess the noise is more of a problem with the microphone
Going by the graph in the datasheet, the microphone is more sensitive to higher frequencies. I guess the noise is more of a problem with the microphone
- Fri Aug 25, 2023 6:48 am
- Forum: Sample Code
- Topic: SPH0645LM4H with ESP32-S3
- Replies: 2
- Views: 30654
SPH0645LM4H with ESP32-S3
It is rather well-known that the SPH0645 uses a nonstandard I2S interface (See https://www.youtube.com/watch?v=3g7l5bm7fZ8 ). An ESP32-specific workaround has been circulated online. I have found a similar workaround for the ESP32-S3. The code below simply modifies the I2S RX registers to delay read...
- Mon Apr 10, 2023 5:07 am
- Forum: ESP-IDF
- Topic: Inputting audio to an ESP32 from an INMP441 I2S microphone: success
- Replies: 13
- Views: 71320
Re: Inputting audio to an ESP32 from an INMP441 I2S microphone: success
Sorry if this is a necropost, but I found this thread useful, and thought I could add to the discussion. I found this to be a good reference: https://github.com/atomic14/esp32-walkie-talkie/blob/main/lib/audio_input/src/I2SMEMSSampler.cpp#L48 Here, only the lower 11 bits of the 32-bit frame are bein...