The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1996
Filed:
Sep. 13, 1993
Omar M Green, Cambridge, MA (US);
Other;
Abstract
The present invention is an audio special effect generator which simulates, almost in real time, the sound of an input audio signal being played in reverse. An input audio signal is digitized and read into memory locations in an SRAM which are sequentially addressed from zero until a predetermined address is reached at which point the data stored is read out to an output terminal in reverse order, i.e., the SRAM is addressed from the predetermined address back to zero. For each read, the data read out of the SRAM is replaced with new data from the input audio signal. When the address reaches zero again, the address begins to be incremented again as the data in each location continues to be read out to the output terminal while being replaced by data from the audio input signal. This operation continues until disabled, thus producing an audio output which is a series of audio signal packets which are copies of portions of the input audio signal reproduced in reverse.