Abstract: A flash-memory based stored-sample electronic music synthesizer enables the electronic reproduction of a large number of independent voices while accommodating the exacting demands of voice continuity, minimal note-start latency, and voice synchronicity. Error correction code associated with each page of a sound sample is stored with the sound sample and is retrieved with the sound sample during playback to thereby increase the overall sample retrieval rate.

Abstract: A flash-memory based stored-sample electronic music synthesizer enables the electronic reproduction of a large number of independent voices while accommodating the exacting demands of voice continuity, minimal note-start latency, and voice synchronicity. Error correction code associated with each page of a sound sample is stored with the sound sample and is retrieved with the sound sample during playback to thereby increase the overall sample retrieval rate.

Abstract: A flash-memory based stored-sample electronic music synthesizer enables the electronic reproduction of a large number of independent voices while accommodating the exacting demands of voice continuity, minimal note-start latency, and voice synchronicity.

Abstract: A flash-memory based stored-sample electronic music synthesizer enables the electronic reproduction of a large number of independent voices while accommodating the exacting demands of voice continuity, minimal note-start latency, and voice synchronicity.

Abstract: A thumb wheel controller that converts the output of a thumb-wheel actuated potentiometer to a digital representation of the thumb-wheel position. The controller includes a pair of operational amplifiers whose linear ranges coincide with the thumb wheel range segments above and below a central dead band and whose output voltage ranges correspond to the digital range of the controller output.

Abstract: An audio filter circuit is formed from a pair of cross-coupled, symmetric filters, each filter having a first stage comprising a single-pole, inverting low pass filter followed by a second stage comprising a two-pole, non-inverting Sallen-Key low pass filter. The circuit is readily switched between single-ended and double-ended output, while maintaining comparable noise and gain characteristics. The gain of the circuit is readily adjustable over a range of gains.

Abstract: A video amplifier for decoding a digital signal input and providing at least three video brightness levels plus a black level to a cathode ray tube is disclosed. The amplifier includes input logic decoding circuitry for providing control signals to a plurality of switching elements which vary the voltage level of a video output signal. The video signal has at least four discrete voltage levels corresponding to a black, dim, normal, or bright display. The amplifier is preferably mounted on the socket of the cathode ray tube and provides a bandwidth on the order of 75 to 100 MHz.

Abstract: A process is disclosed for sequestering metal ions by treating said ions with a compound of the formula: ##STR1## wherein R' is selected from the group consisting of .sup.- OH, alkyloxy and aryloxy; and R is selected from the group consisting of ##STR2## wherein Z is .sup.- OH, alkyl, aryl, alkoxy and aryloxy.

Abstract: A process is disclosed for sequestering metal ions by treating said ions with a compound of the formula: ##EQU1## wherein R' is selected from the group consisting of .sup.-OH, alkyloxy and aryloxy; and R is selected from the group consisting of ##EQU2## wherein Z is .sup.-OH, alkyl, aryl, alkoxy and aryloxy.