Sound Decibel Meter, Noise Meter. ESP32mini + ICS43434 + ESPHome

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1

I think I am getting too high decibel values from live reading.
How to modify correctly the YAML file?
Decibel values are not jumping, those are pretty stable on quiet room.

I am using these instructions:

I am using this YAML File at my ESPHome(ESP32mini):

Sensor is from Sensor Maestros:

Biltema handheld meter shows like 35dB on fast live reading
This setup described here shows like 58dB on fast live reading

At the ICS43434 board the L/R connection is not connected to anywhere, should I connect that and how if needed?

Any ideas or is it only that I should use the filtered values?

2

I just got this chip. from what I can tell, the LR pin is either HI or LOW thus selecting Left or Right. Im not sure if you leave it floating or need a pull-up or pulldown resistor - I haven’t gotten that far yet.

Would you mind sharing what pins on the board are defined in your config?

I see this in your config

i2s:
  bck_pin: 23
  ws_pin: 18
  din_pin: 19
  sample_rate: 48000            # default: 48000
  bits_per_sample: 32           # default: 32
  dma_buf_count: 8              # default: 8
  dma_buf_len: 256              # default: 256
  use_apll: true                # default: false

There are SD, WS and SCK pins on the board:
bck = ??
ws = ??
din = ??

Much appreciated!

3

bck_pin: 23 = bck = GPIO23 at ESP32mini
ws_pin: 18 = ws = GPIO18 at ESP32mini
din_pin: 19 = din = GPIO19 at ESP32mini

I tried to have VCC voltage on L/R and it did not give any values while I had VCC connected to it.

So I wonder how to set it High.

4

Did you ever get it to work ? I saw this photo and the L/R was grounded

5

Yes it is working well but live reading too high values. Thank you for the info I try grounding the L/R

6

Put mine together last night, seems to be working well. I was comparing the audio levels to a app I have on my phone SMARTERNOISE(Pro), I don’t know exact db levels but a estimate,.