Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015
Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration - October 2015
The Measurement and Calibration of Sound Reproducing Systems - July 2015
Testing Loudspeakers with Wavelets
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.:
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.