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