##About SpectrumPrinter converts images or messages to audio signals, which can be viewed using spectrograms (with Audacity or SpectrumView).

##Usage: Compile using make (make) and run:

./spectrum-printer "message"

Some additional options can be used, for instance:

./spectrum-printer "message" lines=40 min=1000 max=2000 time=400

Prints "message" using 40 lines (frequencies) ranging from 1000 to 2000 Hz, where each column takes 400ms.

You can also print images. To prepare image use ./prepare_image.sh input_file output_file height and use image=true option. Example:

./spectrum-printer cameraman.pgm image=true min=1000 max=6000 time=100

When printing images lines option is ignored.

##Dependencies PortAudio V19

##Screens

##License The MIT License (MIT)