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
A New Direct Drive Turntable with Parallel Tracking Arm
This paper describes the design of a novel direct drive turntable motor that may be produced at low cost and a servo controlled parallel tracking pickup arm. These two elements may be integrated into a single transcription unit. The performance of the motor can be so good that it has been our intention to investigate the best possible way of reproducing discs. This implied using a parallel tracking arm. Considerable work was directed towards the form this should take. It was appreciated that the cost of the arm could not match the possible low motor cost and so it was appropriate to consider the inclusion in an integrated unit, which would necessarily be a relatively high priced product, of peripheral functions and to control the resulting unit by means of electronic logic. Some aspects of this control logic are briefly described towards the end of the paper.
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.