A shaped sine burst wavelet is very effective for revealing audible loudspeaker distortion. The same stimulus can be used to measure both frequency response and distortion and lends itself to gated operation. A wavelet can be designed with a flat-top spectrum one-half octave wide using an IFFT and windowing. A lower crest factor wavelet with attractive qualities can be constructed with multiple synchronous sine waves and used in a measurement system particularly suitable for quality control testing. The synchronous wavelet has a flat spectrum over one-quarter to one-half octave, and is zero outside that region, leaving a wide dynamic range for distortion components to be detected. Comparisons with standard swept sine measurements are presented.:

Author: Buck, Marshall
Affiliations: Psychotechnology, Inc., Los Angeles, CA ; Audio Precision, Inc., Beaverton, OR(See document for exact affiliation information.)
AES Convention: 109 (September 2000) Paper Number: 5265
Publication Date: September 1, 2000 Import into BibTeX
Subject: Instrumentation and Measurement
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=9073

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes15)   /pp9900/pp0009/109173.pdf

Start a discussion about this paper!