world.go

⣿⣿⣿⣿⣿⣿⣿⡿⡛⠟⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⠿⠨⡀⠄⠄⡘⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⠿⢁⠼⠊⣱⡃⠄⠈⠹⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⡿⠛⡧⠁⡴⣦⣔⣶⣄⢠⠄⠄⠹⣿⣿⣿⣿⣿⣿⣿⣤⠭⠏⠙⢿⣿⣿⣿⣿⣿
⣿⡧⠠⠠⢠⣾⣾⣟⠝⠉⠉⠻⡒⡂⠄⠙⠻⣿⣿⣿⣿⣿⡪⠘⠄⠉⡄⢹⣿⣿⣿⣿
⣿⠃⠁⢐⣷⠉⠿⠐⠑⠠⠠⠄⣈⣿⣄⣱⣠⢻⣿⣿⣿⣿⣯⠷⠈⠉⢀⣾⣿⣿⣿⣿
⣿⣴⠤⣬⣭⣴⠂⠇⡔⠚⠍⠄⠄⠁⠘⢿⣷⢈⣿⣿⣿⣿⡧⠂⣠⠄⠸⡜⡿⣿⣿⣿
⣿⣇⠄⡙⣿⣷⣭⣷⠃⣠⠄⠄⡄⠄⠄⠄⢻⣿⣿⣿⣿⣿⣧⣁⣿⡄⠼⡿⣦⣬⣰⣿
⣿⣷⣥⣴⣿⣿⣿⣿⠷⠲⠄⢠⠄⡆⠄⠄⠄⡨⢿⣿⣿⣿⣿⣿⣎⠐⠄⠈⣙⣩⣿⣿
⣿⣿⣿⣿⣿⣿⢟⠕⠁⠈⢠⢃⢸⣿⣿⣶⡘⠑⠄⠸⣿⣿⣿⣿⣿⣦⡀⡉⢿⣧⣿⣿
⣿⣿⣿⣿⡿⠋⠄⠄⢀⠄⠐⢩⣿⣿⣿⣿⣦⡀⠄⠄⠉⠿⣿⣿⣿⣿⣿⣷⣨⣿⣿⣿
⣿⣿⣿⡟⠄⠄⠄⠄⠄⠋⢀⣼⣿⣿⣿⣿⣿⣿⣿⣶⣦⣀⢟⣻⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⡆⠆⠄⠠⡀⡀⠄⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⡿⡅⠄⠄⢀⡰⠂⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿

Experimental CGo-based wrapper for the WORLD vocoder.

NOTE: Some functions may have not been implemented yet (refer to the table below):

pyworld	world.go
dio	Dio
harvest	Harvest
stonemask	StoneMask
get_cheaptrick_fft_size	-
get_cheaptrick_f0_floor	-
cheaptrick	CheapTrick
d4c	D4C
synthesize	Synthesize
get_num_aperiodicities	-
code_aperiodicity	-
decode_aperiodicity	-
code_spectral_envelope	-
decode_spectral_envelope	-
wav2world	WavToWorld

Usage

The API of world.go is similar to that of pyworld:

import "https://github.com/ongyx/world.go"

// where x is the wavfile and fs is the sample rate.
var x []float64
var fs int

f0, sp, ap := world.WavToWorld(x, fs)

sp and ap are represented by a custom Matrix type. To access the underlying [][]float64 slice, use mat.S.

Almost all algorithms accept a Options struct in their args. Most of the time, you can use the defaults:

f0, tpos := world.Dio(x, fs, world.DefaultOptions)

But if you need to customize the defaults, just copy them:

o := *world.DefaultOptions

// change defaults...

f0, tpos := world.Dio(x, fs, &o)

Building/Installing

Clone this repo and install:

git clone --recurse-submodules https://github.com/ongyx/world.go
go install

For Linux and Windows, the libworld.a static library has been precompiled under the lib/ folder.

If you want to compile libworld.a from source, do make cross-compile which will compile both the Linux and Windows versions. This assumes that you are using a Linux system with both the native gcc compiler and the MSYS2 cross-compiler.

Todo

• documentation
• tests