Multi-channel signal processing for multi-channel musical instruments
First Claim
1. A multi-channel signal processing system comprising:
- a signal interface for receiving a plurality of distinct incoming audio electrical signals, each incoming audio electrical signal produced by an associated transducer in response to vibrations of an associated vibrating element from within a plurality of vibrating elements, wherein a first associated transducer produces a first of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a first of the plurality of vibrating elements, wherein a second associated transducer produces a second of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a second of the plurality of vibrating elements, and wherein a third associated transducer produces a third of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a third of the plurality of vibrating elements;
a plurality of signal processors, each signal processor comprising a respective pitch shifter, wherein each processor of said plurality of signal processors receives a respective one of said plurality of incoming audio electrical signals,wherein each processor of said plurality of signal processors is configured to;
process a respective received incoming audio electrical signal to produce a respective audio output signal including, pitch-shifting said received incoming audio electrical signal by utilizing the respective pitch shifter;
an output signal interface for providing said audio output signal for each of said plurality of signal processors,wherein a first signal processor of the plurality of signal processors is configured to pitch shift a first received incoming audio signal independently from a second received incoming audio signal, which is pitch shifted by a second signal processor of the plurality of signal processors, andwherein the first and second pitch shifters are configured to be individually controlled in real time by a user-operated controller, the user-operated controller that is associated with the source of the plurality of distinct audio electrical signals.
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Accused Products
Abstract
Multi-channel audio signal processing systems and techniques are provided for electronic instruments having multiple and distinct output channels. Such systems may be used in conjunction with instruments comprising multiple vibrating elements, each with a dedicated signal output. Each received audio signal channel may be directed to a dedicated or shared signal processor for variably changing selected attributes of pitch, timing, timbre, and amplitude in ways that are unique for each signal. Signal processors may be shared using an allocating mixer, allocating switch, or both. An output mixer may be used to mix signal processor output signals into one or more outgoing mixed audio signals. Signal processors, mixers, and switches may be configured by stored program control and controlled in real-time. Real-time pitch variations can be used to change the pitch organization of fixed-pitch vibrating elements within an electronic musical instrument.
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Citations
44 Claims
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1. A multi-channel signal processing system comprising:
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a signal interface for receiving a plurality of distinct incoming audio electrical signals, each incoming audio electrical signal produced by an associated transducer in response to vibrations of an associated vibrating element from within a plurality of vibrating elements, wherein a first associated transducer produces a first of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a first of the plurality of vibrating elements, wherein a second associated transducer produces a second of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a second of the plurality of vibrating elements, and wherein a third associated transducer produces a third of the plurality of distinct incoming audio electrical signals produced in response to the vibrations of a third of the plurality of vibrating elements; a plurality of signal processors, each signal processor comprising a respective pitch shifter, wherein each processor of said plurality of signal processors receives a respective one of said plurality of incoming audio electrical signals, wherein each processor of said plurality of signal processors is configured to; process a respective received incoming audio electrical signal to produce a respective audio output signal including, pitch-shifting said received incoming audio electrical signal by utilizing the respective pitch shifter; an output signal interface for providing said audio output signal for each of said plurality of signal processors, wherein a first signal processor of the plurality of signal processors is configured to pitch shift a first received incoming audio signal independently from a second received incoming audio signal, which is pitch shifted by a second signal processor of the plurality of signal processors, and wherein the first and second pitch shifters are configured to be individually controlled in real time by a user-operated controller, the user-operated controller that is associated with the source of the plurality of distinct audio electrical signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for multi-channel signal processing comprising:
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receiving a plurality of distinct incoming audio electrical signals produced in response to vibrations of an associated plurality of vibrating elements; directing each electrical signal of said plurality of distinct audio electrical signals to a particular signal processor of a plurality of signal processors, each signal processor comprising a respective pitch shifter; and processing, by a first signal processor of the plurality of signal processors, a first received incoming audio electrical signals of the plurality of distinct incoming audio electrical signals, said processing by the first signal processor including pitch-shifting the first received incoming audio electrical signal by utilizing the respective pitch shifter of the first signal processor, processing, by a second signal processor of the plurality of signal processors, a second received incoming audio electrical signals of the plurality of distinct incoming audio electrical signals, said processing by the second signal processor including pitch-shifting the second received incoming audio electrical signal independently from the pitch shifting of the first received incoming audio electrical signal by utilizing the respective pitch shifter of the second signal processor wherein said processing by the first and second signal processors results in an audio output signal for each of the first and second signal processor of said plurality of signal processors, and wherein the first and second pitch shifters are configured to be individually controlled in real time by a user-operated controller, the user-operated controlled that is associated with the source of the plurality of distinct audio electrical signals. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification