Draw Images into Spectrograms
Turn any image into a sound whose spectrogram looks like the image!
What is this?
Most sounds are intricate combinations of many acoustic waves each having different frequencies and intensities. A spectrogram is a way to represent sound by plotting time on the horizontal axis and the frequency spectrum on the vertical axis. Sort of like sheet music on steroids.
What this tool does is, taking an image and simply interpreting it as a spectrogram. Therefore, by generating the corresponding sound, we have embedded our image in a spectrogram.
The game DOOM used a similar technique to hide satanic figures inside its soundtrack. Now everyone can do the same! 😊
Get the command-line tool
pip by running
pip install spectrographic. You can also simply use
stand-alone\ as a command-line tool directly.
Furthermore, make sure you meet all the dependencies inside the
requirements.txt. Install them with
pip install requirements.txt.
After installation with
pip one simply needs to run
spectrographic [...] in the console and with the stand-alone script you have to use
python spectrographic.py [...] inside the folder containing
You could also simply import the
SpectroGraphic class from
spectrographic. Check the doc-strings for detailed explanations and more features.
Command-line tool usage
usage: spectrographic [-h] [--version] -i PATH_TO_IMAGE [-d DURATION] [-m MIN_FREQ] [-M MAX_FREQ] [-r RESOLUTION] [-c CONTRAST] [-p] [-s SAVE_FILE] Turn any image into sound. optional arguments: -h, --help show this help message and exit --version show program's version number and exit -i PATH_TO_IMAGE, --image PATH_TO_IMAGE Path of image that we want to embed in a spectrogram. -d DURATION, --duration DURATION Duration of generated sound. -m MIN_FREQ, --min_freq MIN_FREQ Smallest frequency used for drawing the image. -M MAX_FREQ, --max_freq MAX_FREQ Largest frequency used for drawing the image. -r RESOLUTION, --resolution RESOLUTION Vertical resolution of the image in the spectrogram. -c CONTRAST, --contrast CONTRAST Contrast of the image in the spectrogram. -p, --play Directly play the resulting sound. -s SAVE_FILE, --save SAVE_FILE Path to .wav file in which to save the resulting sound.
Thus, if you have the source image at
./source.png and you want to generate a 10s long sound in the frequency range of 10kHz to 20kHz. You also want to save the resulting .wav-file as
sound.wav and also play the resulting sound. Then you need to run:
spectrographic --image ./source.png --min_freq 10000 --max_freq 20000 --duration 10 --save sound.wav --play
or if you are using the stand-alone script:
python spectrographic.py --image ./source.png --min_freq 10000 --max_freq 20000 --duration 10 --save sound.wav --play
Bug reports, fixes and additional features are always welcome! Make sure to run the tests with
python setup.py test and write your own for new features. Thanks.
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