This is a simple tool for to visualize and analyze sound in both time and frequency domain. You can design filters as frequency domain transfer functions to modify the audio file. You can also add noise to your audio. The input only supports WAV. You can save the plots and the modified audio file.
This tool is developed for educational demonstration purpose, not meant for extremely accurate scientific visualization.
Thi is a portable version, just download the zip file and unzip, there is a all-in-one executable file (.exe) which you may run directly.
The variable you use for the transfer function must be the Laplace variable 's'. The rule for filling in your symbolic transfer function follows the rule of sympy.