Beat Frequencies Study (Spring 2009)

An independent study by Dan Labrie of the Spring of 2009 geared towards the demystification of beat frequencies.

Findings

The following document outlines the study and the three methods of beat formation that were encountered. Present day applications of beat frequencies are also included in the document. Media:BeatFrequenciesLabrie2009.pdf

The composition - coupling the science of beats with musical form. Combinational Tones in C Major

Listening Examples

Below is a brief demonstration of each method of beat summation:

1. Monaural Summation - Media:MonauralExample.mp3 - Tones are sent to both reproducing speakers. The interference effects remain fully pronounced whether using headphones or loudspeakers.
2. Acoustical Summation - Media:AcousticalExample.mp3 - Tones are separated by stereo channel (Left and Right). Play sample through speaker system to allow your listening space to form the beating.
3. Binaural Summation - Media:BinauralExample.mp3 - This listening experience must be done using stereo headphones. Left and Right presented tones allow the brain to develop the beating phenomenon.