https://github.com/voinic/microtts

Simple TTS library for MicroPython that works offline
https://github.com/voinic/microtts

diphone-based micropython speech-synthesis tts

Last synced: about 1 month ago
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Simple TTS library for MicroPython that works offline

• Host: GitHub
• URL: https://github.com/voinic/microtts
• Owner: Voinic
• License: mit
• Created: 2024-06-18T16:54:14.000Z (5 months ago)
• Default Branch: master
• Last Pushed: 2024-07-23T16:39:26.000Z (4 months ago)
• Last Synced: 2024-10-10T22:22:15.999Z (about 1 month ago)
• Topics: diphone-based, micropython, speech-synthesis, tts
• Language: Python
• Homepage:
• Size: 15.7 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.MD
  • License: LICENSE.txt

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README

        
# MicroTTS

Simple TTS library for MicroPython that works offline

Tis library is a MicroPython port of concatanative diphone-based speach synthesizer. It uses lexicon database to convert words to phonemes, which was converted from [CMU Pronouncing Dictionary](http://www.speech.cs.cmu.edu/cgi-bin/cmudict) ([License](https://raw.githubusercontent.com/Voinic/microtts/master/db/cmudict_license.txt)). Diphones database was converted from diphone collection by Alan W Black and Kevin Lenzo ([License](https://raw.githubusercontent.com/Voinic/microtts/master/db/diphones_license.txt)).

## Installation

1. Paste folowing code to REPL console to download library

    ```python

    import mip

    mip.install("github:Voinic/microtts")

    ```

2. Copy [lexicon.db](https://raw.githubusercontent.com/Voinic/microtts/master/db/lexicon.db) and any of [diphones.db](https://raw.githubusercontent.com/Voinic/microtts/master/db/diphones.db) and [diphones_lq.db](https://raw.githubusercontent.com/Voinic/microtts/master/db/diphones_lq.db) to SD-card or internal flash (if your have enough space)

Use diphones_lq.db contains recordings with IMA ADPCM compression. You can use it instead of diphones.db if your memory space is limitted. Note that sound quality will decrease.

## Usage

```python

from utts import Utterance, Synth

LEXICON_DB = "/sd/lexicon.db"

DIPHONES_DB = "/sd/diphones.db"

DB_COMPRESSED = False

CROSSFADE = 0.025

TEXT = "This is a test"

utterance = Utterance(LEXICON_DB)

synth = Synth(DIPHONES_DB, DB_COMPRESSED)

utterance.process(TEXT)

diphones = utterance.get_diphones()

synth.synthesize(diphones, CROSSFADE)

audio = synth.get_audio()

```

## Usage examples

- [examples/save_to_wav.py](https://github.com/Voinic/microtts/blob/master/examples/save_to_wav.py) - Converts given text to speach and saves result into WAV file.

- [examples/direct_playback.py](https://github.com/Voinic/microtts/blob/master/examples/direct_playback.py) - Prompts user for input text and sends output audio to I2S DAC.

## Creating databases

`/db` folder contains code and input files that was used for databases creation. Run this code using micropython interpreter, not regular python (I used Unix port of micropython).