minimal-example-config.yaml

---
esphome:
  name: sound-level-meter

external_components:
  - source: github://stas-sl/esphome-sound-level-meter

esp32:
  board: esp32dev
  framework:
    type: arduino

logger:
  level: DEBUG

i2s:
  bck_pin: 23
  ws_pin: 18
  din_pin: 19
  sample_rate: 48000            # default: 48000
  bits_per_sample: 32           # default: 32

  # right shift samples.
  # for example if mic has 24 bit resolution, and i2s configured as 32 bits,
  # then audio data will be aligned left (MSB) and LSB will be padded with
  # zeros, so you might want to shift them right by 8 bits
  bits_shift: 8                 # default: 0

sound_level_meter:
  # update_interval specifies over which interval to aggregate audio data
  # you can specify default update_interval on top level, but you can also
  # override it further by specifying it on sensor level
  update_interval: 1s           # default: 60s

  # buffer_size is in samples (not bytes), so for float data type
  # number of bytes will be buffer_size * 4
  buffer_size: 1024             # default: 1024

  # see your mic datasheet to find sensitivity and reference SPL.
  # those are used to convert dB FS to db SPL
  mic_sensitivity: -26dB        # default: empty
  mic_sensitivity_ref: 94dB     # default: empty

  # for flexibility sensors are organized hierarchically into groups.
  # each group can have any number of filters, sensors and nested groups.
  # for examples if there is a top level group A with filter A and nested
  # group B with filter B, then for sensors inside group B filters A
  # and then B will be applied:
  # groups:
  #   # group A
  #   - filters:
  #       - filter A
  #     groups:
  #       # group B
  #       - filters:
  #           - filter B
  #         sensors:
  #           - sensor X
  groups:
    - sensors:
        - type: eq
          name: Leq_1s