What’s the big idea?

The goal of this project is to use HPCC Systems technology to help build a reliable classification model that is able to accurately classify an input sound file to a description of its location. The project intends to not only demonstrate a proof of concept for this technology but also to lay the groundwork for what could be the next step in forensic audio analysis and a new means of gathering information through sound.

Impulse Responses

In digital signal processing there are things called Impulse Responses (IRs) that are often used to capture and recreate the audio characteristics of a certain space or piece of equipment. Simply put the audio characteristics of any room can be described as an equation or a system that takes an input sound and then transforms it. An IR is essentially the result of putting a very short burst of sound, or an impulse, into this system and recording the response. We can then take this IR and use it to transform other sounds, making it seem as if they were recorded in the same room.

Using this principle it is possible to create a huge amount of audio data from a few impulse responses and some dry samples which we can then use to train a neural net as a classifier.

Leave a comment

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Create your website at WordPress.com
Get started
%d bloggers like this: