Voice-to-remaining audio (VRA) interactive center channel downmix
First Claim
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1. An apparatus comprising:
- a receiver that generates at least four distinct outputs from a received signal, the four outputs comprising a first channel output, a second channel output, a third channel output, and a fourth channel output, wherein the first and second channel outputs comprise voice signals having right and left spatial differentiation, respectively, and the third and forth channel outputs comprise remaining audio signals having right and left spatial differentiation, respectively, wherein the remaining audio signals are signals substantially other than voice signals;
a first volume control having a first input operatively coupled via a first path to a first output, and a second input operatively coupled via a second path to a second output, the first input coupled to the first channel output and the second input coupled to the second channel output, wherein an adjustment of the first volume control causes an equal and simultaneous adjustment to volumes of signals on the first and second paths;
a second volume control having a third input operatively coupled via a third path to a third output, and a fourth input operatively coupled via a fourth path to a fourth output, the third input coupled to the third channel output and the fourth input coupled to the fourth channel output, wherein an adjustment of the second volume control causes an equal and simultaneous adjustment to volumes of signals on the third and fourth paths;
a first summing circuit having at least a first summing input, a second summing input, and a first summing output, the first summing input coupled to the first output, and the second summing input coupled to the third output; and
a second summing circuit having at least a third summing input, a fourth summing input, and a second summing output, the third summing input coupled to the second output, and the fourth summing input coupled to the fourth output.
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Abstract
A method for decoding an audio signal includes receiving a digital audio signal having a plurality of channels defined thereon, wherein one of the plurality of channels is a center channel and at least one of the other of said plurality of channels is a remaining audio channel; comparing the center channel with the at least one of the other of the plurality of channels to determine a ratio of the center channel to the other of the plurality of channels; and automatically adjusting the center channel and the at least one of the plurality of other channels when a predetermined value for the ratio is not met.
208 Citations
6 Claims
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1. An apparatus comprising:
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a receiver that generates at least four distinct outputs from a received signal, the four outputs comprising a first channel output, a second channel output, a third channel output, and a fourth channel output, wherein the first and second channel outputs comprise voice signals having right and left spatial differentiation, respectively, and the third and forth channel outputs comprise remaining audio signals having right and left spatial differentiation, respectively, wherein the remaining audio signals are signals substantially other than voice signals;
a first volume control having a first input operatively coupled via a first path to a first output, and a second input operatively coupled via a second path to a second output, the first input coupled to the first channel output and the second input coupled to the second channel output, wherein an adjustment of the first volume control causes an equal and simultaneous adjustment to volumes of signals on the first and second paths;
a second volume control having a third input operatively coupled via a third path to a third output, and a fourth input operatively coupled via a fourth path to a fourth output, the third input coupled to the third channel output and the fourth input coupled to the fourth channel output, wherein an adjustment of the second volume control causes an equal and simultaneous adjustment to volumes of signals on the third and fourth paths;
a first summing circuit having at least a first summing input, a second summing input, and a first summing output, the first summing input coupled to the first output, and the second summing input coupled to the third output; and
a second summing circuit having at least a third summing input, a fourth summing input, and a second summing output, the third summing input coupled to the second output, and the fourth summing input coupled to the fourth output. - View Dependent Claims (2, 3, 4, 5, 6)
a first electro-mechanical transducer coupled to the first summing output; and
a second electro-mechanical transducer coupled to the second summing output.
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Specification
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Current AssigneeMind Fusion, LLC (Ascend Innovation Management, LLC)
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Original AssigneeHearing Enhancement Company, LLC
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InventorsSaunders, William R., Vaudrey, Michael A.
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Primary Examiner(s)Isen, Forester W.
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Assistant Examiner(s)Grier, Laura A.
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Application NumberUS10/178,553Publication NumberTime in Patent Office511 DaysField of Search381/27, 381/18-22, 381/104-107, 381/300, 381/307US Class Current381/18CPC Class CodesH04R 25/407 Circuits for combining sign...H04R 3/005 for combining the signals o...
