# Sound Questions

1. Sep 21, 2008

### longestline1

I am confused by this:

Two sinusoidal tones of equal amplitude and with frequencies of 439 and 443 Hz are sounded simultaneously.

Name and describe (qualitavitively and quantitatively) what you hear.
Why is it important that the two waves have equal amplitudes for this effect to occur

2. Sep 21, 2008

### atyy

Last edited: Sep 21, 2008