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توضیحات

Wrapper around the audio-stretch C library to time-stretch WAV files without changing their pitch

ویژگی	مقدار
سیستم عامل	-
نام فایل	audiostretchy-1.1.2
نام	audiostretchy
نسخه کتابخانه	1.1.2
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Adam Twardoch
ایمیل نویسنده	adam+github@twardoch.com
آدرس صفحه اصلی	https://github.com/twardoch/audiostretchy
آدرس اینترنتی	https://pypi.org/project/audiostretchy/
مجوز	BSD-3-Clause

# AudioStretchy AudioStretchy is a Python library that allows you to time-stretch audio signals without changing their pitch. It is a wrapper around the [audio-stretch](https://github.com/dbry/audio-stretch) library by David Bryant, which implements a sophisticated time-stretching algorithm for high-quality results. Version: 1.1.2 ## Features - Time stretching of audio files without changing their pitch - Supports WAV files - Adjustable stretching ratio from 0.25 to 4.0 - Cross-platform: Windows, macOS, and Linux Adapted from the [original audio-stretch C library](https://github.com/dbry/audio-stretch): Time-domain harmonic scaling (TDHS) is a method for time-scale modification of speech (or other audio signals), allowing the apparent rate of speech articulation to be changed without affecting the pitch-contour and the time-evolution of the formant structure. TDHS differs from other time-scale modification algorithms in that time-scaling operations are performed in the time domain (not the frequency domain). This project is a Python wrapper around a a TDHS library to utilize it with standard WAV files. There are two effects possible with TDHS and the audio-stretch demo. The first is the more obvious mentioned above of changing the duration (or speed) of a speech (or other audio) sample without modifying its pitch. The other effect is similar, but after applying the duration change we change the sampling rate in a complimentary manner to restore the original duration and timing, which then results in the pitch being altered. So when a ratio is supplied to the audio-stretch program, the default operation is for the total duration of the audio file to be scaled by exactly that ratio (0.5X to 2.0X), with the pitches remaining constant. If the option to scale the sample-rate proportionally is specified (-s) then the total duration and timing of the audio file will be preserved, but the pitches will be scaled by the specified ratio instead. This is useful for creating a "helium voice" effect and lots of other fun stuff. Note that unless ratios of exactly 0.5 or 2.0 are used with the -s option, non-standard sampling rates will probably result. Many programs will still properly play these files, and audio editing programs will likely import them correctly (by resampling), but it is possible that some applications will barf on them. They can also be resampled to a standard rate using [audio-resampler](https://github.com/dbry/audio-resampler) by David Bryant. The Python package does not expose all command-line options of the original library. ## Installation Install AudioStretchy using pip: ``` python3 -m pip install audiostretchy ``` or ``` python3 -m pip install git+https://github.com/twardoch/audiostretchy ``` ## Usage ### CLI ``` audiostretchy INFILENAME OUTFILENAME <flags> POSITIONAL ARGUMENTS INFILENAME The path to the input WAV file. OUTFILENAME The path to the output WAV file. FLAGS -r, --ratio=RATIO Type: float Default: 1.0 The ratio to use for processing. Defaults to 1.0. -s, --silence_ratio=SILENCE_RATIO Type: float Default: 0.0 The silence ratio to use for processing if different from ratio ``` ### Python ```python from audiostretchy.stretch import process_audio input_file = "input.wav" output_file = "output.wav" stretch_ratio = 1.1 process_audio(input_file, output_file, ratio=stretch_ratio) ``` In this example, the `input.wav` file will be time-stretched by a factor of 1.1, meaning it will be 10% longer, and the result will be saved in the `output.wav` file. ## API The main function to use in AudioStretchy is `process_audio` in `audiostretchy.stretch`: ```python process_audio( infilename: Union[str, Path], outfilename: Union[str, Path], ratio: float = 1.0, silence_ratio: float = 0.0, ) ``` - `infilename`: The path to the input audio file (WAV format). - `outfilename`: The path to the output audio file (WAV format). - `ratio`: The stretching ratio. Must be between 0.25 and 4.0. Defaults to 1.0 (no stretching). - `silence_ratio`: The silence ratio to use for processing. Must be between 0.25 and 4.0. Defaults to 0.0 (use the same ratio as `ratio`). ## License - [Original C library code](https://github.com/dbry/audio-stretch): Copyright (c) 2022 David Bryant - [Python code](https://github.com/twardoch/audiostretchy): Copyright (c) 2023 Adam Twardoch - Licensed under the [BSD-3-Clause license](./LICENSE.txt)

نیازمندی

مقدار	نام
>=0.5.0	fire
>=1.23.0	numpy
-	importlib-metadata
-	setuptools
-	pytest
-	pytest-cov

زبان مورد نیاز

مقدار	نام
>=3.8	Python

نحوه نصب

نصب پکیج whl audiostretchy-1.1.2:

pip install audiostretchy-1.1.2.whl

نصب پکیج tar.gz audiostretchy-1.1.2:

pip install audiostretchy-1.1.2.tar.gz