Voice-assistants Simple configuration does not allow conversation

ESPHome
1

This is my configuration. It’s very simple.
I want to do some small tests.
But I have a problem.
I can’t start the conversation no matter which key I use.

The original configuration is too long and difficult to understand.
So I simplified it


i2s_audio:
  - id: i2s_output
    # i2s_output data pin is gpio7
    i2s_lrclk_pin:
      number: GPIO16
    i2s_bclk_pin:
      number: GPIO15

  - id: i2s_input
    # data line is GPIO6
    i2s_lrclk_pin:
      number: GPIO4
    i2s_bclk_pin:
      number: GPIO5

microphone:
  - platform: i2s_audio
    id: i2s_mics
    i2s_din_pin: GPIO6
    adc_type: external
#    pdm: false
#    sample_rate: 16000
    bits_per_sample: 32bit
#    i2s_mode: primary
    i2s_audio_id: i2s_input
#    channel: left
      
speaker:
  # Hardware speaker output
  - platform: i2s_audio
    id: i2s_audio_speaker
    i2s_audio_id: i2s_output
    dac_type: external
    i2s_dout_pin: 7
    sample_rate: 48000
    buffer_duration: 100ms

media_player:
  - platform: speaker
    id: external_media_player
    name: None
    internal: False
    volume_min: 0.4
    volume_max: 0.85
    volume_increment: 0.15
    announcement_pipeline:
      speaker: i2s_audio_speaker
      format: FLAC     # FLAC is the least processor intensive codec
      num_channels: 1  # Stereo audio is unnecessary for announcements
      sample_rate: 48000

micro_wake_word:
  id: mww
  stop_after_detection: false
  microphone:
    microphone: i2s_mics
    channels: 0
    gain_factor: 4
  models:
    - model: https://github.com/kahrendt/microWakeWord/releases/download/okay_nabu_20241226.3/okay_nabu.json
      # probability_cutoff: 0.8
      id: okay_nabu
  vad:
    probability_cutoff: 0.05

voice_assistant:
  id: va
  microphone:
    microphone: i2s_mics
#    channels: 0
#    gain_factor: 4
  media_player: external_media_player
#  micro_wake_word: mww
  use_wake_word: True
  noise_suppression_level: 0
  auto_gain: 0 dbfs
  volume_multiplier: 1

button:
  - platform: template
    name: "start"
    on_press:
      - voice_assistant.start: 
          
  - platform: template
    name: "stop"
    on_press:
      - voice_assistant.stop:

  - platform: template
    name: "starting"
    on_press:
      - voice_assistant.start_continuous:

The configuration source is
https://community.home-assistant.io/t/voice-assistant-esphome-with-esp32-s3-max98357-inmp441/892145

2

If you are using micro wake word you will need this line. to be false not true, in voice assistant section. At least that is what mine is set to and it work perfectly.

  use_wake_word: false
3

After many tests, I figured out why the button didn’t work.
In my configuration, after pressing the button, you need to shout “okay nabu” loudly.
Voice Assistant will start Listens.
After setting use_wake_word: false, you don’t need to shout “okay nabu” loudly.