Variable slippage control for a disc jockey control surface
View Patent ↗The disclosure pertains to a scratch effect controller for use by a disk jockey, wherein at least one electromagnet creates the slippage tension or friction effect between the user manipulated disc, which includes a vinyl-like surface thereby simulating a vinyl record, and the rotatable or fixed platter. The strength of the electromagnet is variable so as to create a variable slippage tension or friction effect.
1. A device for producing scratch effects in a digitized audio signal, comprising:
a rotating platter which is free of motor driving;
a user manipulated disc including magnetic material;
a slip disc concentrically disposed against the upper surface of said rotating platter;
said user manipulated disc impinging against the upper surface of said slip disc, rotating about a common axis with said rotating platter and being free of motor driving;
at least one electromagnet spaced and with polarity oriented with respect to said user manipulated disc for attracting said user manipulated disc thereby increasing a force urging said user manipulated disc against said rotating platter; and
a detector for detecting motion of said user manipulated disc and producing a scratch effect in response thereto.
2. The device of claim 1 further including a circuit for varying magnetic strength of said at least one electromagnet.
3. The device of claim 1 , further including means for communicating with a computer or processor.
4. The device of claim 3 wherein means for communicating with the computer includes a USB interface.
5. The device of claim 3 wherein means for communicating with the computer includes wireless protocol.
6. The device of claim 1 wherein said upper surface of said user manipulated disc includes an optical encoding pattern.
7. The device of claim 1 wherein said lower surface of said user manipulated disc includes an optical encoding pattern.
8. A device of claim 1 further including an encoder disc operationally coupled to said user manipulated disc.
9. A device for producing scratch effects in a digitized audio signal, comprising:
a fixed base;
a rotatable platter mounted to said fixed base, said rotatable platter includes magnetic material and said rotatable platter is free of a motor driving, wherein the user creates all rotational movement with respect to said rotatable platter;
at least one electromagnet spaced and with polarity oriented with respect to said user manipulated rotatable platter for attracting said user manipulated rotatable platter thereby increasing a force urging said rotatable platter against said fixed based; and
a detector for detecting motion of said rotatable platter and producing a scratch effect in response thereto.
10. The device of claim 9 further including a circuit for varying magnetic strength of said at least one electromagnet.
11. The device of claim 9 , further including means for communicating with a computer or processor.
12. The device of claim 9 wherein said lower surface of said rotatable platter includes an optical encoding pattern.
13. A device of claim 9 further including an encoder disc operationally coupled to said rotatable platter.