Stereo Decoding System
First Claim
1. A method for decoding a stereo multiplex signal, comprising:
- converting the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−
R), where the sum signal and the difference signal are derived from a left stereo signal (L) and right stereo signal (R);
determining a first transfer function HL(f) and a second transfer function HR(f) from the sum signal (L+R) and the difference signal (L−
R);
filtering the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L); and
filtering the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).
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Abstract
A system for decoding a stereo multiplex signal, including one or more devices operable to convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−R). The sum signal and the difference signal may be derived from a left stereo signal (L) and right stereo signal (R). The system may also be operable to determine a first transfer function HL(f) and a second transfer function (HR(f)) from the sum signal (L+R) and the difference signal (L−R). Further, the system may be operable to filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L), and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).
2 Citations
20 Claims
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1. A method for decoding a stereo multiplex signal, comprising:
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converting the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−
R), where the sum signal and the difference signal are derived from a left stereo signal (L) and right stereo signal (R);determining a first transfer function HL(f) and a second transfer function HR(f) from the sum signal (L+R) and the difference signal (L−
R);filtering the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L); and filtering the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for decoding a stereo multiplex signal, comprising:
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a stereo decoder that converts the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−
R);a first filter that is connected to the stereo decoder and that is operable to filter the sum signal (L+R) according to a first transfer function to provide a left stereo signal (L); a second filter that is connected to the stereo decoder and that is operable to filter the sum signal (L+R) according to a second transfer function to provide a right stereo signal (R); and a filter control unit that is connected to the stereo decoder and that is operable to control the first filter and the second filter by providing control signals representing the first transfer function and the second transfer function, respectively. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A hardware device for decoding a stereo multiplex signal, operable to:
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convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−
R), where the sum signal and the difference signal are derived from a left stereo signal (L) and right stereo signal (R);determine a first transfer function HL(f) and a second transfer function (HR(f)) from the sum signal (L+R) and the difference signal (L−
R);filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L); and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).
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Specification