solarliner/reconvolve

Create convolution impulse response from frequency sweep inputs

reconvolve

Create convolution impulse response from frequency sweep inputs

Reconvolve is a small CLI written in python which aims at helping create high-quality impulse responses by recording the medium of interest.
The easiest way to do that is to record a click sound as passed through the medium and record the output - but those are limited in quality (more technically, temporal resolution). A better solution would be to have a longer input sound that would still capture the desired spectrum; this is where sine sweep impulses enter. But while they give better results, you can't directly use the recording as an impulse response, and need to convolve it back to a usable one.

Install

With setup.py:

python setup.py install

With pipenv (creates a virtual environment, best for development):

pipenv install

Use

python main.py create sweep.wav

Creates a sine sweep from 20 Hz to 20 kHz sampled at 48 kHz.

python main.py process sweep.wav record.wav IR_out.wav

Processes a recording record.wav of the impulse sweep.wav into IR_out.wav.