sparv-sbx-whisper-import 0.1.0

Allow Sparv to import audio as text with KB Whisper

sparv-sbx-whisper-import

This Sparv plugin makes it possible to use audio files as input to Sparv. The audio is transcribed to text using transformers and the KB Whisper models.

Prerequisites

• Python 3.11 or higher
• Sparv
• ffmpeg installed and available in your PATH

Install

Install in a virtual environment:

pip install sparv-sbx-whisper-import

or if you have installed sparv with pipx:

pipx inject sparv sparv-sbx-whisper-import

or if you have installed sparv with uv-pipx:

uvpipx install sparv-sbx-whisper-import --inject sparv

Usage

To use audio files as input to Sparv, first create a corpus and a Sparv configuration file. For more information about creating a corpus, see the Sparv documentation. Possible configuration options are described below.

Once your corpus and configuration file are set up, run Sparv as usual:

sparv run

Supported audio formats

[!NOTE] Only one file type and one importer can be used within a corpus. If you want to process multiple file types, please create separate corpora.

The following audio formats are supported:

Audio format	Importer (in config)
MP3	sbx_whisper_import:parse_mp3
OGG	sbx_whisper_import:parse_ogg
WAV	sbx_whisper_import:parse_wav

Do you miss some audio format? Please check the tracking issue or open a new issue to request support for additional formats.

Command-line interface

You can use this plugin from the command-line as

# Activate virtual environment
> sbx-whisper-import --help
usage: sbx-whisper-import [-h] [--model-size MODEL_SIZE] [--verbosity VERBOSITY] INPUT

Transcribe audio file with KB-Whisper. Output is in JSON.

positional arguments:
  INPUT                 audio input to trancribe in one of the formats MP3, OGG or WAV

options:
  -h, --help            show this help message and exit
  --model-size MODEL_SIZE
                        set the size of the model
  --verbosity VERBOSITY
                        set the verbosity of the model

Configuration

To use this plugin, specify the appropriate importer for your audio files in the Sparv configuration file (config.yaml).

The default model size is small and the default verbosity is standard. You can change these settings as described below.

import:
  text_annotation: text
  # needed to use sbx_whisper_import, use one of the lines below
  importer: sbx_whisper_import:parse_mp3
  # importer: sbx_whisper_import:parse_ogg
  # importer: sbx_whisper_import:parse_wav

sbx_whisper_import:
  # One of "tiny", "base", "small", "medium" or "large"
  model_size: small
  # One of "subtitle", "standard" or "strict" (low verbosity to high verbosity)
  # NOTE: model size "medium" does support the verbosity "subtitle"
  model_verbosity: standard

export:
  annotations:
    - text
    - <token>

Annotations

The following annotations are created by the plugin:

• text with the attribute source_filename, which indicates the name of the audio file from which the text was transcribed.
• utterance with the attributes start and end, which indicate the timestamps (in seconds) of the utterance within the audio file.

Sample output:

<?xml version='1.0' encoding='utf-8'?>
<text source_filename="example.mp3">
  <utterance end="6.0" start="0.0">
    <token>Världsförklaring</token>
    <token>.</token>
  </utterance>
</text>

Metadata

The following table lists the exact models and revisions used for each combination of model size and model verbosity.

Model Size	Model Verbosity	Model used	Revision used
tiny	subtitle	KBLab/kb-whisper-tiny	238d279d9821c32b905fcaff6ce9dad38ad00ab7
tiny	standard	KBLab/kb-whisper-tiny	e2bca57c3eee6144b9fefd07749580034cfa9686
tiny	strict	KBLab/kb-whisper-tiny	ea2a872f41f543aaadea23e185e974d1ab29ba2b
base	subtitle	KBLab/kb-whisper-base	7a57b541ccf4aebef73ecfdc064ef4b5cab3b02e
base	standard	KBLab/kb-whisper-base	1ee0facc30bb1f26492bb1360a99d552e25a31c2
base	strict	KBLab/kb-whisper-base	be19431a3fb78b71ac1525bcafe792220b314c9e
small	subtitle	KBLab/kb-whisper-small	8d49820338edb72829d1c44fa70a2ba94a4a20fa
small	standard	KBLab/kb-whisper-small	728c681653e2732ff64618e7f607f509ec87472a
small	strict	KBLab/kb-whisper-small	066ef166dd25b4b27039517ca77af30c1c10688a
medium	subtitle	NOTE: subtitle not present for kb-whisper-medium	-
medium	standard	KBLab/kb-whisper-medium	32529a74c6662479625746edce7f16fe743fe011
medium	strict	KBLab/kb-whisper-medium	51990d2cd5d0cf120b3eceb812bc5407a171a220
large	subtitle	KBLab/kb-whisper-large	50b62f493fa513926007d388f76cce9659bce123
large	standard	KBLab/kb-whisper-large	9e03cd21c14d02c57c33ae90b5803b54995ff241
large	strict	KBLab/kb-whisper-large	ea0a8ac1cda8eab8777bf8d74440eb7606825d8f

Changelog

This project keeps a changelog.

Minimum supported Python version

This library tries to support as many Python versions as possible. When a Python version is added or dropped, this library's minor version is bumped.

• v0.1.0: Python 3.11