test_data/assistant_audios/audio_metadata_format.md

# Assistant Audio Metadata File Format.

Each audio metadata file is used to describe the recorded audio samples. These
metadata files should be of json format.

## Allowed field names and value formats

The following field names and corresponding value formats are allowed in the
metadata file:

* audio_file_path - A string; This should be the absolute path/uri of the
  recorded audio sample.
* script - A string; This should be the text used to record the audio sample.
  eg: Who is obama?
* number_of_channels - An Integer; The number of channels, the recorded audio
  sample has.
* sample_format -  A string; The sample format of recorded stream container.
  eg: S32LE
* sample_rate - An Integer; The sampling rate of recorded audio sample in hertz.

## Sample File

  {
    "audio_file_path": "okgooglesetalarmat5am.raw",
    "script": "set alarm at 5 a.m.",
    "number_of_channels": "8",
    "sample_format": "S32LE",
    "sample_rate": "48000"
  }