Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ultrasonic speech translator and communications system










Image Number 5 for United States Patent #5539705.

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).








 
 
  Recently Added Patents
Systems and methods for performing live chat functionality via a mobile device
Canine iPS cells and method of producing same
High-accuracy centered fractional fourier transform matrix for optical imaging and other applications
Memory component and memory device
White light emitting diode (LED) lighting device
Catalyst composition with nanometer crystallites for slurry hydrocracking
Sample holder and method for treating sample material
  Randomly Featured Patents
Roll-over mechanism for two-way plow
Motor vehicle wheel behaviour and radar system
Filter elements for circulating air systems
Polyamides
Method for manufacture of high-expansion type absorbent polymer
Method and system for monitoring and providing notification regarding identity document usage
Motorized damper apparatus
Arrangement for reducing non-linear distortions in an output signal of an amplifier stage
Resistor integrated on a semiconductor substrate
Thermal electron emitter and thermal electron emission device using the same