Sounds of frequency.

Frequency test runs, sine waves, square waves, and three variations of music to check longplay phonograph record characteristics.

Bibliographic Details

Corporate Authors:	Smithsonian/Folkways Recordings, Folkways Records
Format:	CD Audio Book
Language:	English
Published:	Washington, D.C. : Smithsonian Folkways Recordings, [2003?]
Series:	Custom compact disc series.
Subjects:	High-fidelity sound systems > Testing. Phonograph > Testing.