AES Store

Journal Forum

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
4 comments

Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
9 comments

New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
1 comment

Access Journal Forum

AES E-Library

Measurement of Spectral Content of Record Warps

Any design to obtain improved dynamic response of the cartridge-tone-arm system must include the very-low-frequency warp variations on the record surface. It is discussed how these signals can be best quantified through power spectral density functions for analytical use in tone-arm design. Using a minicomputer-based data acquisition system, a data base representing 220 records was obtained. The average and worst case power spectral densities for both vertical and horizontal warps are specifically presented. Both warp displacement and warp velocity are given. The horizontal variations are seen to reflect simply the center hole offset and are uncorrelated with the vertical warps. The worst case envelope for vertical warps is shown to be somewhat lower than that used by previous investigators. More importantly, the average vertical warp is seen to be an order of magnitude less than the worse case.

Author:
Affiliation:
JAES Volume 28 Issue 12 pp. 859-867; December 1980
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