AES E-Library

Digital Simulation of Phonograph Tracking Distortion

Phonograph tracking distortion results from the misalignment of a playback cartridge with respect to the cutting head. While it has been researched for decades, it remains a source of mystery: it has never been accurately isolated or simulated. A simulation of horizontal and vertical tracking distortion of extremely high quality is presented, operating on the principle of phase modulation of PCM digital audio, allowing tracking distortion to be evaluated, in isolation, with real musical content. In this context, tracking distortion is equivalent to digital audio sampling jitter, with the jitter spectrum equal to the signal spectrum. Implications of this connection, as well as simulation accuracy, preliminary listening test results, and potential applications are discussed.

Author: Tollerton, Richard
Affiliation: Isomorphic Software, Inc., San Francisco, CA, USA
AES Convention:127 (October 2009) Paper Number:7924 Import into BibTeX

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: (CD 127Papers)   /127/7924.pdf