Resources Contact Us Home
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
Supplier capability methods, systems, and apparatuses for extended commerce
Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display
Method and system for providing complete internet anywhere with partial server processing
Fan guide
Method and apparatus for detection of LVDT core fallout condition
Device with a floating head having a heater element
Wireless device with extendable antenna
  Randomly Featured Patents
Probe chromatograph apparatus and method
Ultrasonically milled channel plate for a switch
Fishing reel
Pesticidal tris-oximino heterocyclic compounds
Washcoat loaded porous ceramics with low backpressure
Clock stopping schemes for data buffer
Support frame of a table lamp
Determining availability based on percentage available
Wheel or wheel cover
Collapsible lamp shade