https://github.com/jiro4989/wave

The wave is a tiny WAV sound module
https://github.com/jiro4989/wave

lib media nim sound wave

Last synced: about 1 month ago
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The wave is a tiny WAV sound module

• Host: GitHub
• URL: https://github.com/jiro4989/wave
• Owner: jiro4989
• Created: 2020-01-22T22:45:59.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2023-10-11T10:30:22.000Z (about 1 year ago)
• Last Synced: 2024-08-04T03:06:49.572Z (5 months ago)
• Topics: lib, media, nim, sound, wave
• Language: Nim
• Homepage: https://jiro4989.github.io/wave/wave.html
• Size: 629 KB
• Stars: 22
• Watchers: 4
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.rst

Awesome Lists containing this project

• awesome-nim - wave - A tiny WAV sound module. (Multimedia / Audio)

README

        
====

wave

====

|gh-actions|

The wave is a tiny `WAV `_ sound module.

It does not support compression/decompression, but it does support mono/stereo.

The wave is inspired by `Python wave `_.

**Note:**

The wave is not supported some sub-chunks yet.

I will support sub-chunks (`fact`, `cue`, `plst`, `list`, `labl`, `note`, `ltxt`, `smpl`, `inst`) in the future.

.. contents:: Table of contents

   :depth: 3

Installation

============

.. code-block:: Bash

   nimble install wave

Usage

=====

Reading example

---------------

.. code-block:: nim

   import wave

   var wav = openWaveReadFile("tests/testdata/sample1.wav")

   doAssert wav.riffChunkDescriptorSize == 116

   doAssert wav.numChannels == numChannelsMono

   doAssert wav.sampleRate == 8000'u32

   doAssert wav.byteRate == 8000'u32

   doAssert wav.blockAlign == 1'u16

   doAssert wav.bitsPerSample == 8'u16

   doAssert wav.numFrames == 80

   doAssert wav.dataSubChunkSize == 80'u16

   echo wav

   ## Output:

   ## (riffChunkDescriptor: (id: "RIFF", size: 116, format: "WAVE"), formatSubChunk: (id: "fmt ", size: 16, format: 1, numChannels: 1, sampleRate: 8000, byteRate: 8000, blockAlign: 1, bitsPerSample: 8, extendedSize: 0, extended: @[]), dataSubChunk: (id: "data", size: 80, data: ...), audioStartPos: 44)

   wav.close()

Writing example

---------------

Square wave

^^^^^^^^^^^

.. code-block:: nim

   import wave

   var wav = openWaveWriteFile("tests/testdata/example_square.wav")

   wav.numChannels = numChannelsMono

   wav.sampleRate = 8000'u16

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.writeFrames([0xFF'u8, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00])

   wav.close()

Sine wave

^^^^^^^^^

.. code-block:: nim

   import wave

   import math

   let

     width = 127'f

     sampleRate = 44100'f

     hz = 440'f

     seconds = 3

   var wav = openWaveWriteFile("tests/testdata/example_sine.wav")

   wav.numChannels = numChannelsMono

   wav.sampleRate = sampleRate.uint16

   for _ in 0 ..< seconds:

     var buf: seq[byte]

     for i in 0 ..< sampleRate.int:

       let f = float(i)

       let b = byte(width * sin(2*PI*hz*f/sampleRate) + width)

       buf.add(b)

     wav.writeFrames(buf)

   wav.close()

API document

============

* https://jiro4989.github.io/wave/wave.html

Pull request

============

Welcome :heart:

LICENSE

=======

MIT

See also

========

English

-------

* `WAVE PCM soundfile format `_

* `Wav file format -musicg-api `_

Japanese

--------

* `cpython/Lib/wave.py `_

* `WAVEファイル読み・書き込み `_

* `WAV (Waveform Audio File Format) `_

* `WAVE(WAV)ファイルフォーマット `_

* `その103「WAVの構造と現状」 `_

.. |gh-actions| image:: https://github.com/jiro4989/wave/workflows/build/badge.svg

   :target: https://github.com/jiro4989/wave/actions