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US 4,781,594 AGranted
Sound simulation system
AssigneeThe Boeing Company
InventorWilbur B. Metcalf
Life of this patent
Estimating the term…
Abstract
A multiple channel composite sound generating system utilizes a microprocessor-based controller, single tone generators and random noise generators to control the frequency and attenuation of single tones and the attenuation of random noise bands for each channel. The controller interpolates host computer data to produce desired sounds. The system simulates the sounds of operating machinery, and adds realism to training environments such as aircraft training mockups.
Claims14
A system for producing composite sounds, comprising:
- a plurality of electroacoustic devices;
- a plurality of frequency programmable tone generators;
- a plurality of programmable tone attenuators;
- at least one random noise spectrum generator means for generating noise bands with predetermined center frequencies spaced to cover an audio spectrum;
- a controller means for processing and distributing digital data to establish frequencies to be produced by said frequency programmable tone generators and to establish levels of attenuation to be applied by said programmable tone attenuators and said programmable random noise attenuators;
- a connecting means to interconnect said plurality of electroacoustic devices, said plurality of frequency programmable tone generators, said plurality of programmable tone attenuators, said at least one random noise spectrum generator means, said plurality of programmable random noise attenuators, and said plurality of amplifiers to produce multiple channel composite sounds.
3 more elements
Dependencies are inferred from the claim text.