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Journal Article

Fundamentals of Modern Audio Measurement

Authors: Cabot, Richard C.

Journal of the Audio Engineering Society · Volume 47 · Issue 9 · September 1999

Abstract

Fundamental concepts in testing audio equipment are reviewed, beginning with an examination of the various equipment architectures in common use. Several basic analog and digital audio measurements are described. Tradeoffs inherent in the various approaches, the technologies used, and their limitations are discussed. Novel techniques employing multitone signals for fast audio measurements are examined and applications of sampling frequency correction technology to this and conventional FFT measurements are covered. Synchronous averaging of FFTs and the subsequent noise reduction are demonstrated. The need for simultaneity of digital and analog generation is presented using converter measurements as an example.

Details

Publication
Journal of the Audio Engineering Society
Volume
47
Issue
9
Publication date
September 6, 1999
Affiliation
AudioPrecision, Inc., Beaverton, OR (See document for exact affiliation information.)
Type
Journal Article