Frequency Analysis

Synopsis

Illustrates the power of frequency analysis of signals by looking at speech and speech synthesis. Gives a brief resume of the main ideas of Fourier synthesis by synthesising a square wave from its components. The process is then reversed to show how a frequency analyser can break a signal down into its components. Explains now the human vocal tract acts as an acoustic filter, filtering the signal produced by the vocal cords. The basic ideas of computer-controlled voice synthesis and the role of the spectrogram are mentioned.

Language

English

Country

Great Britain

Medium

Video; Videocassette. Standard formats. col. 25 min.

Year of production

1979

Availability

OUT OF DISTRIBUTION

Subjects

Physics

Keywords

electronic signals; frequency analysis; speech synthesis

Credits

Producer

John Stratford

Production Company

Name

BBC Open University Productions

Distributor

Name

Open University Worldwide

Web

http://www.ouw.co.uk External site opens in new window

Phone

+44 (0) 1908 274066

Address

Walton Hall
Milton Keynes
MK7 6AA

Notes

NB. As of May 2016 Open University Worldwide are no longer distributing DVDs. They have posted this message on their website: ‘Unfortunately Open University Worldwide Limited has decided that product sales are no longer viable given the reduced funding to Higher Education institutions and diminishing demand for the products we have traditionally stocked. At present the Open University Students Association (OUSA) will continue to sell the "Good Study Guide", and we are in discussion with other possible distributors to continue to make The Open University’s products available for purchase. As soon as we have any information on other channels of distribution we will update this notice’. Some products are still available via second hand dealers on Amazon.co.uk