arduino / arduino/ArduinoCore-mbed
PDM sound with high sizzle on RP2040
- Dominant language
- C
- Stars
- 411
- Forks
- 225
- PR merge metrics
- No merged PRs in 30d
Description
Hi,
I'm working a project with a stereo PDM microphone(MP34DT06J x 2) with RP2040. Thanks for the PDM library, and I get record voice now. However, I find the voice has high frequence sizzle noise when play. When record, I am in quiet environment. So I think maybe I can modify some parameters of OpenPDMFilter.c. But it looks difficult for me, because I am not clear with the meaning of each parameters... Could you give some suggestion about this~~
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Research direction
Start with the PDM library and OpenPDMFilter.c, focusing on the filter parameters mentioned in the report. Reproduce the high-frequency sizzle with two MP34DT06J microphones on an RP2040 in a quiet environment, then determine which parameter changes affect the recorded playback and document a verified fix or recommendation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- embedded-iot
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100