Dynamic information storage or retrieval – Combined independent audio systems – Changeover between audio systems
Patent
1980-09-18
1983-10-11
Nusbaum, Mark E.
Dynamic information storage or retrieval
Combined independent audio systems
Changeover between audio systems
84 122, 84 127, 369 83, 364900, 381 51, 381104, G09B 504, G06F 316, G06F 500
Patent
active
044096828
ABSTRACT:
A digital editing system includes first and second memories in which audio data and weighting factor data are respectively stored. The audio data are sequentially retrieved from the first memory and multiplied by corresponding weighting factor data retrieved from the second memory. A coincidence detector detects when predetermined storage locations of the memories are addressed. The weighting factor data has a unity or zero value during the time prior to the occurrence of an output from the detector, whereupon it changes its value as a function of time until it reaches to zero or unity and remains at the final value thereafter. The direction of variation of the weighting factor data can be appropriately selected to modify the audio data into a so-called "fade out" of "fade-in" pattern at a desired point of the audio program. A pair of such editing systems is required for editing audio programs from different sources for storing such programs in a pair of first memories. Weighting factor data respectively stored in the second memories vary in opposite directions so that the audio data from the first memories are modified into "fade-out" and "fade-in" patterns which are combined in an adder to create a single, continuous audio program.
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Matsushige Takashi
Mori Toshinori
Tsuchikane Yoshiyuki
Niessen William G.
Nusbaum Mark E.
Victor Company of Japan , Limited
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