OPTIMIZING AUDIO SYSTEMS
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Abstract
A system with speakers in a listening environment is optimized acquiring data to determine characteristics of the acoustic field generated by the speakers. Test signals are supplied to the speakers and sound measurements made at a plurality of microphone positions in the listening environment. A set of parameters is generating reflecting a weighted frequency response curve, the set of parameters being calculated from the frequency response data weighted in proportion to a distance between a listening spot within the listening environment and the microphone position.
161 Citations
61 Claims
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1-47. -47. (canceled)
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48. A method of operating a system having a plurality of electro-acoustic transducers deployed in a listening environment, the method comprising a step of acquiring data for determining characteristics of an acoustic field generated by at least one of the electro-acoustic transducers of the system, the acquiring data step comprising:
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measuring sound produced in response to test signals supplied to the electro-acoustic transducers, a respective sound measurement being made at each of a plurality of microphone positions within the listening environment, each test signal comprising a frequency response test signal supplied to one or more of the plurality of electro-acoustic transducers; for each sound measurement, calculating microphone position data representing the microphone position relative to positions of the electro-acoustic transducers, and determining frequency response data detected by the microphone in response to sound produced by the one or more electro-acoustic transducers receiving the frequency response test signal; and generating a set of parameters reflecting a weighted frequency response curve, the set of parameters being calculated from the frequency response data weighted in proportion to a distance between a listening spot within the listening environment and the microphone position.
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61. A measurement system having a plurality of electro-acoustic transducers deployed in a listening environment, the measurement system being adapted to acquire data for determining characteristics of an acoustic field generated at least one of the electro-acoustic transducers of the system, the system comprising:
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a test signal generator; a detected sound analyzer adapted to measure sound produced in response to test signals supplied by the test signal generator to the electro-acoustic transducers, a respective sound measurement being made at each of a plurality of microphone positions within the listening environment, each test signal comprising a frequency response test signal supplied to one or more of the plurality of electro-acoustic transducers; and a microphone position determining unit adapted, for each sound measurement, to calculate microphone position data representing the microphone position relative to positions of the electro-acoustic transducers; a frequency analysis unit adapted to determine frequency response data detected by the microphone in response to sound produced by the one or more electro-acoustic transducers receiving the frequency response test signal; and a parameter generator adapted to generate a set of parameters reflecting a weighted frequency response curve, the set of parameters being calculated from the frequency response data weighted in proportion to a distance between a listening spot within the listening environment and the microphone position.
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Specification