Sound processing system for configuration of audio signals in a vehicle
First Claim
1. A sound processor for use in a vehicle audio sound processing system, the sound processor comprising:
- a pre-processing block configured to receive and process a real audio input signal;
a crossbar mixer configured to receive and mix the real audio input signal that has been pre-processed to generate a real audio output signal and a virtual output signal; and
a post processing block configured to receive and process the real audio output signal and the virtual output signal,where the post processing block is configured to filter the virtual output signal to obtain a predetermined frequency range of the virtual output signal,and where a post processed virtual output signal is combined with one of the real audio input signal or a post processed real audio output signal to form an audio signal to drive a loudspeaker.
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Accused Products
Abstract
A sound processing system for a vehicle includes a sound processor that is configured to mix at least one real audio input signal to form at least one virtual output signal. At least one audio signal that is available to drive at least one loudspeaker may be formed using the combination of the virtual output signal and the real audio input signal. The virtual output signal may be post processed to form a predetermined frequency range of the audio signal prior to being combined with the real audio input signal. The audio signal may be created by mixing the real audio input signal with the post processed virtual output signal. Alternatively, the audio signal may be formed by mixing the real audio input signal to form a real audio output signal, and then summing the real audio output signal with the post processed virtual output signal. Mixing may be performed with a crossbar mixer included in the sound processor.
150 Citations
33 Claims
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1. A sound processor for use in a vehicle audio sound processing system, the sound processor comprising:
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a pre-processing block configured to receive and process a real audio input signal; a crossbar mixer configured to receive and mix the real audio input signal that has been pre-processed to generate a real audio output signal and a virtual output signal; and a post processing block configured to receive and process the real audio output signal and the virtual output signal, where the post processing block is configured to filter the virtual output signal to obtain a predetermined frequency range of the virtual output signal, and where a post processed virtual output signal is combined with one of the real audio input signal or a post processed real audio output signal to form an audio signal to drive a loudspeaker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A sound processor for use in a vehicle audio sound processing system, the sound processor comprising:
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a crossbar mixer configured to generate a virtual output signal and a real audio output signal from a real audio input signal suppliable to the crossbar mixer; a real post processing block configurable to process the real audio output signal; a virtual post processing block configurable to process the virtual output signal; and a summer configured to sum the virtual output signal and the real audio output signal to form an audio output capable of driving a loudspeaker, where the processed virtual output signal and the processed real audio output signal are summed after being processed by the virtual post processing block and the real post processing block, respectively. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A sound processor for use in a vehicle audio sound processing system, the sound processor comprising:
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a memory device; instructions stored in the memory device to divide a real audio input signal into a first real audio output signal and a virtual output signal; instructions stored in the memory device to filter the real audio output signal to obtain a filtered real audio output signal having a predetermined frequency range of the real audio output signal representative of a range of frequency response of a first transducer included in a loudspeaker; instructions stored in the memory device to filter the virtual output signal to obtain a filtered virtual output signal having a predetermined frequency range of the virtual output signal representative of a range of frequency response of a second transducer included in the loudspeaker; instructions stored in memory device to combine the filtered real audio output signal and the filtered virtual output signal; and instructions stored in the memory device to make available the combination of the filtered real audio output signal and the filtered virtual output signal to drive the loudspeaker. - View Dependent Claims (27, 28)
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29. A method of sound processing in a vehicle audio sound processing system, the method comprising:
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dividing a real audio input signal into a first real audio output signal and a virtual output signal; filtering the real audio output signal to obtain a filtered real audio output signal having a predetermined frequency range of the real audio output signal representative of a range of frequency response of a first transducer included in a loudspeaker; filtering the virtual output signal to obtain a filtered virtual output signal having a predetermined frequency range of the virtual output signal representative of a range of frequency response of a second transducer included in the loudspeaker; combining the filtered real audio output signal and the filtered virtual output signal; and making available the combination of the filtered real audio output signal and the filtered virtual output signal to drive the loudspeaker. - View Dependent Claims (30, 31, 32, 33)
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Specification