Microphone Access

Microphones use the audio entitlement. This grants the app access to ALSA audio devices for recording, voice commands, wake-word detection, speech-to-text, and audio analysis.

Add the entitlement from your project directory:

wendy project entitlements add audio

Inspect Audio Devices

List audio input and output devices on the target:

wendy device audio list

The output includes device IDs, device names, type, and which device is currently default.

To set a specific audio device as the default:

wendy device audio set-default --id 1

Monitor Microphone Levels

Use the built-in VU meter to confirm the microphone is producing input:

wendy device audio monitor --id 1

You can adjust the update rate:

wendy device audio monitor --id 1 --rate 20

Stream Microphone Audio

To listen to microphone input locally:

wendy device audio listen --id 1

To write raw PCM to stdout for another tool:

wendy device audio listen --id 1 --sample-rate 16000 --channels 1 --stdout

App Configuration

A minimal microphone app uses:

{
  "appId": "com.example.microphone",
  "version": "1.0.0",
  "entitlements": [
    { "type": "audio" }
  ]
}

Then deploy:

wendy run

Microphone Access