rainbowgram - represent Magnitude and phase at the same time

rainbowgram is time-frequency domain wave representation.
This library provides many utilities related to rainbowgram (conversion, visualization and so on).

Demo

API lists

• wave2rain
  • convert waveform into rainbowgram
• rain2wave
  • convert rainbowgram into waveform
• rain2graph
  • convert rainbowgram into graph (like spectrogram)

How to use

Install

As a library, please install via pip (or pipenv) like below.

pipenv install git+https://github.com/tarepan/rainbowgram#egg=rainbowgram

As a stand alone project or simplest PoC, please clone this project like below.

git clone https://github.com/tarepan/rainbowgram.git

Use

Please read demo.py and docstring.
Basically, you simpley needs wave as numpy + sampling rate.
Other arguments are optional configurations.

consideration

rainbowgram variation

This library defines rainbowgram as magnitude + instantaneous_frequency, not power, not CQT.
For usability, scaling on time and/or frequency is desirable.
This library provides these choice as option, but the standard is above one.

• magnitude scaling
  • power
  • log
  • range
• IF scaling
  • range (-pi/pi or 0/1)
• frequency scaling
  • mel
    • (filter bank, not yet supported)
    • linear interpolation

visualization

graph generation, presentation and storing should be separated.