Acoustic communication system
First Claim
1. An acoustic communication system, comprising:
- a voice processing circuit which transforms a voice message into a first signal;
a noise sensor channel which generates a second signal in response to detecting background noise in an environment;
a microcomputer which receives said first and second signals, and provides a third signal to an m number of n output ports, where m and n are integers, 0≦
m≦
n, and n≧
2, said third signal having amplitude characteristics functionally related to said second signal;
an ultrasonic output channel coupled to a first one of said output ports and which generates an ultrasonic output signal representing said voice message in response to receiving said third signal; and
a pubic address channel coupled to a second one of said output ports which generates an audible signal representing said voice message in response to receiving said third signal.
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Accused Products
Abstract
An acoustic communication system comprises: a voice processing circuit wh generates a first signal representing a voice message; a noise sensor channel which generates a second signal in response to detecting background noise in an environment; a microcomputer which receives the first and second signals, and provides a third signal to a selected one of first and second output ports of the microcomputer, where the amplitude of the third signal is functionally related to the value of the second signal; an ultrasonic output channel coupled to the first output port and which generates an ultrasonic output signal representing the voice message in response to receiving the third signal; a pubic address channel coupled to the second output port which generates an audible signal representing the voice message in response to receiving the third signal; and an ultrasonic receiving system which generates an audible output representing the voice message in response to receiving the ultrasonic output signal.
49 Citations
18 Claims
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1. An acoustic communication system, comprising:
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a voice processing circuit which transforms a voice message into a first signal; a noise sensor channel which generates a second signal in response to detecting background noise in an environment; a microcomputer which receives said first and second signals, and provides a third signal to an m number of n output ports, where m and n are integers, 0≦
m≦
n, and n≧
2, said third signal having amplitude characteristics functionally related to said second signal;an ultrasonic output channel coupled to a first one of said output ports and which generates an ultrasonic output signal representing said voice message in response to receiving said third signal; and a pubic address channel coupled to a second one of said output ports which generates an audible signal representing said voice message in response to receiving said third signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An acoustic communication system, comprising:
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a voice processing circuit which transforms a voice message into a first signal; a noise sensor channel which generates a second signal in response to detecting background noise in an environment; a microcomputer which receives said first and second signals, and provides a third signal to an m number of n output ports, where m and n are integers, 0≦
m≦
n, and n≧
2, said third signal having amplitude characteristics functionally related to said second signal;a channel select control which provides a control signal to said microcomputer that directs said microcomputer to provide said third signal to a q number of output ports, where q is an integer and 0≦
q≦
n;an ultrasonic output channel coupled to a first one of said output ports and which generates an ultrasonic output signal representing said voice message in response to receiving said third signal; and a pubic address channel coupled to a second one of output ports which generates an audible signal representing said voice message in response to receiving said third signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An acoustic communication system, comprising:
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a voice processing circuit which transforms a voice message into a first signal; a noise sensor channel which generates a second signal in response to detecting background noise in an environment; a microcomputer which receives said first and second signals, and provides a third signal to an m number of n output ports, where m and n are integers, 0≦
m≦
n, and n≧
2, said third signal having amplitude characteristics functionally related to said second signal;an ultrasonic output channel coupled to a first one of said output ports and which generates an ultrasonic output signal representing said voice message in response to receiving said third signal; a pubic address channel coupled to a second one of said output ports which generates an audible signal representing said voice message in response to receiving said third signal; an optical transmitter which generates a first optical signal in response to receiving said third signal from said microcomputer; a fiber optic bus which is coupled to receive said first optical signal from said optical transmitter; and an optical receiver which provides a third signal to said microcomputer in response to receiving a second optical signal from said fiber optic bus. - View Dependent Claims (18)
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Specification