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written by Paul Falstad
This applet is a visual simulation of sound interference between two speakers.  The applet can also be used to generate interference with sound from stereo speakers. The controls allow speaker separation, playing frequency, phase difference and scale and balance to be adjusted. Source code and directions in English and German are also included.

Please note that this resource requires at least version 5.0 of Microsoft Internet Explorer.
Subjects Levels Resource Types
Oscillations & Waves
- Acoustics
- Wave Motion
= Interference and Diffraction of Sound
= Reflection and Refraction (Sound)
= Wave Properties of Sound
- Lower Undergraduate
- High School
- Upper Undergraduate
- Instructional Material
= Activity
= Interactive Simulation
- Audio/Visual
= Movie/Animation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
- application/zip
- text/html
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Access Rights:
Free access
Has a copyright or other licensing restriction.
interference, sound waves
Record Creator:
Metadata instance created June 17, 2004 by Melanie Carter
Record Updated:
July 8, 2013 by Bruce Mason
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
P. Falstad, , WWW Document, (
P. Falstad, Sound Wave Interference Applet, , <>.
APA Format
Falstad, P. (n.d.). Sound Wave Interference Applet. Retrieved December 2, 2021, from
Chicago Format
Falstad, Paul. Sound Wave Interference Applet. (accessed 2 December 2021).
MLA Format
Falstad, Paul. Sound Wave Interference Applet. 2 Dec. 2021 <>.
BibTeX Export Format
@misc{ Author = "Paul Falstad", Title = {Sound Wave Interference Applet}, Volume = {2021}, Number = {2 December 2021}, Year = {} }
Refer Export Format

%A Paul Falstad %T Sound Wave Interference Applet %U %O application/java

EndNote Export Format

%0 Electronic Source %A Falstad, Paul %T Sound Wave Interference Applet %V 2021 %N 2 December 2021 %9 application/java %U

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

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