drawdio

Drawdio

Creates different styles of drawings from source audio

What it does

Reads the PCM of a wav audio file, then draws an image where the width and height is the square root of the number of samples, and each pixel is a gradient from either red to black for a negative Pulse, black for a null pulse (0), or gradient black to white for a positive pulse.

TODO

• Define RGBA colors for low, mid, high pulse from command line (thinking comma delimmited --low 255,255,255,255 style)
• See if I can tweak the gradient modifier to be exponential for more dramatic gradations.
• Optional output file (if you don't want default naming)
• investigate dealing with stereo using a stereo image (deinterlace)

Usage Example

Input

go run main.go pixelate -f data/tone-1000hz.wav

Output

tone-1000hz-SECOND_OF_GENERATION.png

Output Examples