dreadl0ck / go-waveform

Draw waveform image from wav audio files

go-waveform

Golang project for the purpose of practicing, understanding golang and audio file format.

Usage

Requirements

Go 1.11 (Go Modules)

Cli

Generate waveform image via CLI

GO111MODULE=on make
./bin/go-waveform -t dark -r 1000 -f png example/violin.wav

open example/violin-L.png
open example/violin-R.png

Import as package

Import as package,

import "github.com/dreadl0ck/go-waveform"

and decode wav audio file

w := waveform.DecodeWav(wavFileBytes)
fmt.Println(w.BitsPerSample)

data, _ := w.GetData()

if stereoData, ok := data.(*waveform.StereoData); ok {
  fmt.Println(stereoData.RSample)
  fmt.Println(stereoData.LSample)
} else if monoData, ok := data.(*waveform.MonoData); ok {
  fmt.Println(monoData.Sample)
}

Todo

• More wav file details
• Converter
• Raw Waveform
• Waveform image customization
• Test