AES Store

Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
10 comments

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

High-Performance Total Difference-Frequency Distortion Meter

A new design of a total difference-frequency distortion (TDFD) meter having the highest sensitivity to date is described. It requires no critical filter stages and produces its own test signals. Quadrature synchronous detectors, simple passive and active filters, and phase-locked-loop synthesizers are used to achieve a measurement dynamic range of 135 dB or 0.15 ppm. The microprocessor displays TDFD and shows odd- and even-order distortion fractions. The possibility exists of locking to an external reference, allowing the measurement of CD players or a change of test signal frequency by shifting the master reference. Block diagrams and example measurements are presented.

Authors:
Affiliations:
JAES Volume 42 Issue 6 pp. 483-489; June 1994
Publication Date:

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.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!


 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society