Ultrasonic speech translator and communications system

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870531

Akerman, M Alfred ^[1]; Ayers, Curtis W ^[2]; Haynes, Howard D ^[1]

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1. Knoxville, TN
2. Clinton, TN

A wireless communication system undetectable by radio frequency methods for converting audio signals, including human voice, to electronic signals in the ultrasonic frequency range, transmitting the ultrasonic signal by way of acoustical pressure waves across a carrier medium, including gases, liquids, or solids, and reconverting the ultrasonic acoustical pressure waves back to the original audio signal. The ultrasonic speech translator and communication system (20) includes an ultrasonic transmitting device (100) and an ultrasonic receiving device (200). The ultrasonic transmitting device (100) accepts as input (115) an audio signal such as human voice input from a microphone (114) or tape deck. The ultrasonic transmitting device (100) frequency modulates an ultrasonic carrier signal with the audio signal producing a frequency modulated ultrasonic carrier signal, which is transmitted via acoustical pressure waves across a carrier medium such as gases, liquids or solids. The ultrasonic receiving device (200) converts the frequency modulated ultrasonic acoustical pressure waves to a frequency modulated electronic signal, demodulates the audio signal from the ultrasonic carrier signal, and conditions the demodulated audio signal to reproduce the original audio signal at its output (250).

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5539705
• OSTI ID: 870531
• Country of Publication: United States
• Language: English

Related Subjects

ultrasonic
speech
translator
communications
wireless
communication
undetectable
radio
frequency
methods
converting
audio
signals
including
human
voice
electronic
range
transmitting
signal
acoustical
pressure
waves
carrier
medium
gases
liquids
solids
reconverting
original
20
device
100
receiving
200
accepts
input
115
microphone
114
tape
deck
modulates
producing
modulated
transmitted
via
converts
demodulates
conditions
demodulated
reproduce
output
250
carrier medium
frequency modulated
carrier signal
pressure waves
ultrasonic signal
radio frequency
frequency range
receiving device
electronic signal
pressure wave
signal producing
transmitted via
ultrasonic frequency
modulated electron
modulated electronic
transmitting device
electronic signals
frequency methods
including human
sonic signal
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