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https://github.com/gregorias/pycodec2
Python's interface to codec 2
https://github.com/gregorias/pycodec2
codec2 speech voice
Last synced: 6 days ago
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Python's interface to codec 2
- Host: GitHub
- URL: https://github.com/gregorias/pycodec2
- Owner: gregorias
- License: bsd-3-clause
- Created: 2015-03-06T16:14:36.000Z (over 9 years ago)
- Default Branch: main
- Last Pushed: 2024-06-18T05:11:49.000Z (12 days ago)
- Last Synced: 2024-06-18T06:29:52.893Z (12 days ago)
- Topics: codec2, speech, voice
- Language: Cython
- Homepage:
- Size: 1.99 MB
- Stars: 17
- Watchers: 2
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-hamradio - PyCodec2
README
# Pycodec2
Pycodec2 is a Cython wrapper for [Codec 2][codec2].
In other words, Pycodec2 allows using the Codec 2 C library from Python.
## Installation
### Prerequisites
Pycodec2 requires [Codec 2][codec2].
On Linux, I recommend using the distro's package-manager, e.g., on
Arch/Manjaro: `pacman -Syuu codec2`, so that Codec2's assets land in standard
searchable directories for `python setup.py` to use.
On macOS, you may use [the Homebrew
formula](https://formulae.brew.sh/formula/codec2#default).
### Instructions
You can install the library using PyPI (the easiest option) or from source.
#### From PyPI
To install the library from PyPI, run:
```bash
pip install pycodec2
```
### From Source
To install the library from source, see building instructions in `DEV.md`. You
can then install the wheel with:
```bash
pip install dist/*.whl
```
### Codec 2 Compatibility
Pycodec2 3.\* is compatible with Codec 2 1.2.\*.
Pycodec2 2.\* is compatible with Codec 2 1.0.\*.
Pycodec2 1.0.\* is compatible with Codec 2 at 0.9.2+ versions.
If your Codec 2 version is older than 0.9.2, then try
[pycodec2-old](https://pypi.org/project/pycodec2-old/) package.
For more information on potential compatibility problems, check out [this
issue](https://github.com/gregorias/pycodec2/issues/8).
## Usage
### Example
`example.py` implements a basic script that uses Codec 2 to encode and deencode
a sample. Use the following steps to run an end-2-end scenario (dev/rune2etest
implements steps 2-5).
1. Download a sample .wav file, e.g., [trashcan](https://freesound.org/people/InspectorJ/sounds/431158/).
2. Convert the .wav to a raw mono-channel 8kHz format, e.g.,
sox trashcan.wav -e signed-integer -b 16 trashcan.raw channels 1 rate 8000
3. Compile pycodec2
python setup.py build_ext --inplace
4. Run `example.py`
python example.py trashcan.raw
5. Convert `output.raw`
sox -r 8000 -e signed-integer -b 16 output.raw output.wav
Now you can listen to `output.wav`.
### Expected Input Format
[Codec 2][codec2] assumes that input files use:
* 8kHz bitrate,
* 16-bit width samples,
* a single channel.
### Available Modes
For a list of currently supported modes, look for `_modes` in
`pycodec2/pycodec2.pyx`.
## Remarks
This library is considered complete. Please notify me or send a pull request on
GitHub if you notice any bugs.
[codec2]: http://www.rowetel.com/blog/?page_id=452