Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Ph 20 - Sound - Interference

Beat calculation with guitar example
by

Bill Kapphahn

on 17 October 2011

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Ph 20 - Sound - Interference

are a periodic variation in the loudness of sound. Beats can be heard when 2 tuning forks are hit together at different times The beat will momentarilly step in and out this is because one fork vibrates at a frequency different from the other when compression overlaps the beat it has reached a maximum in volume when a rarefaction from one fork meets compression from another, its volume is at a minimum. sound that reaches your ears throb between a maxiumum and a minimum loudness. this process produced a tremolo effect waves can be viewed on an oscilloscope different frequencies of sound are fed into the oscilloscope a picture shows up that represents different pressure patterns These can be viewed individually or when the sound overlaps. the waves that in step twice each second produce a beat frequency of 2 Hz The beats that are 10- and 12- Hz, chosen for convience, are infrasonic. This means that they and their beats are inaudible Beats can occur with any kind of wave and are a good way to compare frequencies to tune a guitar, a musician listens for beats made between a standard tuning fork and a particular string on the guitar. when frequencies are identical, the beats disappear. members of an orchestra tune up by listening for beats between their instruments and a standard tone made by an oboe or any other instrument The End time
Full transcript