Previous Next

Range of Hearing
# 3C20.10

Description: Two large speakers on a cart are hooked up to a function generator and amplifier. Vary the frequency of the signal as the class listens. Have the class raise their hands only as long as they can hear at the extreme ends of the hearing range. At subsonic frequencies you can see the speakers vibrate. DO NOT LEAVE THE POWER ON A SUPER OR SUBSONIC FREQUENCY AS THIS WILL BURN OUT THE SPEAKERS. Speaker limitations do not allow you to test students ability of hearing low frequencies.

Instructions: Hmm

Hazards: Hmm

Parts: Speaker Pasco Frequency Generator Banana Plug Connectors

Purchased/Built: built

Setup Time: 10 min

Quant. in Demo Room: 1

Demo References
Freier and Anderson Sh-3 An oscillator driving a good audio system is used to demonstrate the range of hearing.

Keyword Search:
complete words only, or parts of other words?

Home Manual Demo Suggestions

NCSU Physics Demonstrations
© 2010, North Carolina State University Department of Physics. The design of this site nor the
contents may be copied without the express written permission of the NC State University Department of Physics.

North Carolina State University
All Rights Reserved, 2011