Accession Number:

AD0627181

Title:

A TECHNIQUE FOR THE ANALYSIS OF MUSICAL INSTRUMENT TONES,

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

Personal Author(s):

Report Date:

1965-10-01

Pagination or Media Count:

146.0

Abstract:

A technique to analyze the transient part of a musical tone was developed. The analysis was carried out on Illiac II, a high-speed digital computer, the signals being presented to the computer through an analogdigital converter. The analysis procedure consists of four steps 1 The determination of an adequate mathematical specification for an equation which will represent the sound pressure wave generated by an instrument 2 The determination of the constants in the equation for a given tone. No assumption is made regarding the frequencies of the partial tones. Inharmonic partials are detected and accounted for in the specification function. 3 The verification of the results, both mathematically and by resynthesis of the tone using Illiac II to check the adequacy of the representation The former technique yields a more sensitive measure of error. 4 Iterating, if necessary, to improve the results. At this stage, the original specification function may be altered, if necessary. A great deal of success was obtained with this scheme and resynthesis has proven to be quite successful. Author

Subject Categories:

  • Humanities and History
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE