Process for enhancing the existing ambience, imaging, depth, clarity and spaciousness of sound recordings
Patent 7076071 Issued on July 11, 2006. Estimated Expiration Date: 
June 8, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 8, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3249696 3670106 3697692 3772479 3849600 Digital delay/ambience processor Recirculationless concert hall simulation and enhancement system Monaural signal to artificial stereo signals convertings and processing circuit for headphones Stereo synthesizer Automatic stereophonic manipulation system and apparatus for image enhancement InventorAssigneeApplicationNo. 09877158 filed on 06/08/2001US Classes:381/307Surround (i.e., front plus rear or side)ExaminersPrimary: Le, HuyenAssistant: Faulk, Devona E. International ClassesH04R 5/02H04R 5/00 H03G 3/00 AbstractA process for enhancing ambience in an audio signal output that is derived from an audio signal input in a dual channel audio ambience extraction circuit. The process includes cross-coupling of audio signals in one channel with audio signals in another channel. Each of the cross-coupled signals is attenuated and delayed by an adjustable time period that is within a haas delay time and is then applied in the feedback path to a summing input of an opposite channel. At the summing input, the signals are mixed with subsequent audio signal inputs to that channel. All of the attenuated and delayed signals are continuously applied to outputs of the extraction circuit during the cross-coupling process. The output signals comprise the original signals plus delayed and attenuated reproductions of the original signal along with continuing signals that are submitted to the extraction circuit subsequent to the initial signals.Other References
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