Complementary-pair equalizer
First Claim
1. A method of processing signals comprising:
- Providing a first signal and a second signal, each of said first and second signals comprising a frequency spectrum including a plurality of frequency bands;
Supplying said first and second signals to first and second signal processors, respectively;
Selecting at least one of said plurality of frequency bands with said first signal processor and selecting at least one of said plurality of frequency bands with said second signal processor, wherein said selections are less than the frequency spectrum of the plurality of frequency bands for said first and second signals; and
Adjusting a level for the at least one frequency band selected by said first processor with said first processor, and adjusting a level for the at least one frequency band selected by said second processor with said second processor, such that an increase in level of said selected at least one frequency band in one of said first and second signals results in a decrease in level of said selected at least one frequency band in the other of said first and second signals, and said increase in level and said resultant decrease in level are performed independently of changes to other frequency bands in said first and second signal processors.
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Abstract
A method and apparatus are described which reduce the presence of an unwanted signal. According to one embodiment, a first signal is provided from a desired location that includes an unwanted signal while a second signal is provided from an alternate location (e.g., one where the unwanted signal is less of a proportion of the total signal). The first and alternate signals are provided to respective signal processors. A level for a selected frequency band of the first and alternate signals is adjusted so that an increase in one results in a decrease in the other. Doing so allows the frequency band that includes the unwanted signal to be reduced in the desired first signal and filled in with a similar frequency band from the alternate signal.
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Citations
30 Claims
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1. A method of processing signals comprising:
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Providing a first signal and a second signal, each of said first and second signals comprising a frequency spectrum including a plurality of frequency bands;
Supplying said first and second signals to first and second signal processors, respectively;
Selecting at least one of said plurality of frequency bands with said first signal processor and selecting at least one of said plurality of frequency bands with said second signal processor, wherein said selections are less than the frequency spectrum of the plurality of frequency bands for said first and second signals; and
Adjusting a level for the at least one frequency band selected by said first processor with said first processor, and adjusting a level for the at least one frequency band selected by said second processor with said second processor, such that an increase in level of said selected at least one frequency band in one of said first and second signals results in a decrease in level of said selected at least one frequency band in the other of said first and second signals, and said increase in level and said resultant decrease in level are performed independently of changes to other frequency bands in said first and second signal processors. - View Dependent Claims (2, 3, 4, 23, 24)
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5. A method of processing signals comprising:
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Providing a first signal from a first position relative to an instrument and a second signal from a second position relative to said instrument, each of said first and second signals comprising a frequency spectrum including a plurality of frequency bands;
Supplying said first and second signals to at least first and second signal processors, respectively;
Selecting at least one of said plurality of frequency bands with said at least first signal processor and selecting at least one of said plurality of frequency bands with said at least second signal processor, wherein said selections are less than the frequency spectrum of the plurality of frequency bands for said first and second signals, and;
Adjusting a level for the at least one frequency band selected by said first processor with said first processor, and adjusting a level for the at least one frequency band selected by said second processor with said second processor, such that an increase in level of said selected at least one frequency band in one of said first and second signals results in a decrease in level of said selected at least one frequency band in the other of said first and second signals, and said increase in level and said resultant decrease in level are performed independently of changes to other frequency bands in said first and second signal processors. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 25, 26)
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16. An apparatus for processing signals comprising:
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a first signal source generating a first signal and a second signal source generating a second signal, each of said first and second signals comprising a frequency spectrum including a plurality of frequency bands;
first and second signal processors adapted to receive said first and second signals, respectively;
said first signal processor further adapted to select at least one of said plurality of frequency bands, wherein said selection is less than the frequency spectrum of the plurality of frequency bands for said first signal;
said second signal processor further adapted to select at least one of said plurality of frequency bands, wherein said selection is less than the frequency spectrum of the plurality of frequency bands for said second signal, and;
the first signal processor further adapted to adjust a level for the at least one frequency band selected by said first processor, and said second signal processor further adapted to adjust a level for the at least one frequency band selected by said second processor, such that an increase in level of said selected at least one frequency band in one of said first and second signals results in a decrease in level of said selected at least one frequency band in the other of said first and second signals, and said increase in level and said resultant decrease in level are performed independently of changes to other frequency bands in said first and second signal processors. - View Dependent Claims (17, 18, 27, 28)
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19. An apparatus for processing signals comprising:
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a first signal source adapted to provide a first signal from a first position relative to an instrument and a second signal source adapted to provide a second signal from a second position relative to said instrument, each of said first and second signals comprising a frequency spectrum including a plurality of frequency bands;
first and second signal processors adapted to receive said first and second signals, respectively;
said first signal processor further adapted to select at least one of said plurality of frequency bands, wherein said selection is less than the frequency spectrum of the plurality of frequency bands for said first signal;
second signal processor further adapted to select at least one of said plurality of frequency bands, wherein said selection is less than the frequency spectrum of the plurality of frequency bands for said second signal; and
the first signal processor further adapted to adjust a level for the at least one frequency band selected by said first processor, and said second signal processor further adapted to adjust a level for the at least one frequency band selected by said second processor, such that an increase in level of said selected at least one frequency band in one of said first and second signals results in a decrease in level of said selected at least one frequency band in the other of said first and second signals, and said increase in level and said resultant decrease in level are performed independently of changes to other frequency bands in said first and second signal processors. - View Dependent Claims (20, 21, 22, 29, 30)
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Specification