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US 7,273,980 B2Granted
Position and velocity transducer using a phonograph disc and turntable
OwnerScott A. Wardleinventor
Life of this patent
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Abstract
A system and method for capturing turntable expressions using generated high-powered and low-powered signals to transduce the absolute position and velocity information of forward and reverse movements of a turntable stylus.
Claims22
A system for digitally capturing turntable techniques, the system comprising:
- a. a signal generator module for the creation and recording of at least one high-powered pilot signal and a plurality of lower-powered carrier signals;
- b. a turntable having a moveable tonearm, a stereophonic pickup cartridge and a stylus;
- c. a stereophonic grooved phonograph record moveably attached to the turntable and containing the recorded signals;
- d. a preamplifier connected to the turntable;
- e. at least one stereophonic analog-to-digital converter, wherein an input of said analog-to-digital converter is connected to an output of the preamplifier and wherein an output of the analog to digital converter is connected to the digital computer;
- and
- f. a digital computer capable of running software and connected to the at least one stereophonic analog-to-digital converter.
4 more elements
A method for capturing turntable techniques, the method comprising:
- a. generating a signal comprising at least one high-powered pilot signal of a single frequency and a plurality of lower-powered carrier signals;
- b. recording the generated signal onto a stereophonic grooved phonograph record;
- c. initiating operation of software stored onto a digital computer;
- d. inserting a stylus into a segmented groove trajectory of the stereophonic grooved record;
- e. applying scratching techniques in a forward and reverse direction to the stereophonic grooved phonograph record and the turntable;
- f. extracting velocity and absolute position information of said stylus in each direction;
- g. transducing the velocity and absolute position information of said stylus into digital information;
- and
- h. applying the transduced velocity and absolute position information to client systems at a rate of at least 50 times per second.
6 more elements
Dependencies are inferred from the claim text.