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A Digital Meter for the Rapid and Accurate Measurement of Tonal Error in Musical Sounds

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A measuring instrument is described which enables the deviation and oscillation of the intonation of any musical sound to be determined with high speed and accuracy. The instrument works digitally and includes a computer with TTL-IC's to determine the ratio of the frequencies of the test-signal and a chosen standard reference tone. The transformation of this ratio into the logarithmic cent-value is done with the help of a table comprising PROM's (programmable read only memories).

For this reason only a short computing time is needed and the total time to obtain a result is one period of test-signal for the measurement and less than another period for the transformation. The applicability of the instrument is indicated by several examples.
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Document Type: Research Article

Publication date: November 1, 1976

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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