Audio signal processing
First Claim
1. A method for processing audio signals, comprising:
- electroacoustically directionally transducing by a first directional loudspeaker unit positioned in front of a listening position a first audio signal which is a first surround channel to produce a first radiation pattern with a first primary axis along which the acoustic output is greatest and a first null axis along which the acoustic output is the least;
electroacoustically directionally transducing by the directional loudspeaker unit a second audio signal which is a first non-surround channel to produce a second radiation pattern with a second primary axis along which the acoustic output is greatest and a second null axis along which the acoustic output is the least;
providing a user with a capability of alternatively selecting a first combined radiation pattern in which the first primary axis and the second primary axis are in substantially the same direction or a second combined radiation pattern in which the first primary axis and the second primary axis are in different directions.
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Abstract
A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a second spectral band signal; scaling the first spectral band signal by a first scaling factor proportional to the amplitude of the second audio signal; and scaling the first spectral band signal by a second scaling factor to create a second signal portion. Other portions of the disclosure include application of the signal processing method to multichannel audio systems, and to audio systems having different combinations of directional loudspeakers, full range loudspeakers, and limited range loudspeakers.
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Citations
14 Claims
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1. A method for processing audio signals, comprising:
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electroacoustically directionally transducing by a first directional loudspeaker unit positioned in front of a listening position a first audio signal which is a first surround channel to produce a first radiation pattern with a first primary axis along which the acoustic output is greatest and a first null axis along which the acoustic output is the least; electroacoustically directionally transducing by the directional loudspeaker unit a second audio signal which is a first non-surround channel to produce a second radiation pattern with a second primary axis along which the acoustic output is greatest and a second null axis along which the acoustic output is the least; providing a user with a capability of alternatively selecting a first combined radiation pattern in which the first primary axis and the second primary axis are in substantially the same direction or a second combined radiation pattern in which the first primary axis and the second primary axis are in different directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An audio system, comprising:
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a directional loudspeaker unit positioned in front of a listening position to radiate a first surround channel in a first radiation pattern with a first primary axis along which the acoustic output is greatest and a first null axis along which the acoustic output is the least and to radiate a first non-surround channel in a second radiation pattern with a first primary axis along which the acoustic output is greatest and a first null axis along which the acoustic output is the least; and circuitry providing a user with a capability of alternatively selecting a first combined radiation pattern in which the first primary axis and the second primary axis are in substantially the same direction or a second combined radiation pattern in which the first primary axis and the second primary axis are in different directions. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification