Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Thermal response to – or generation of – sound vibration
Patent
1987-09-09
1989-05-16
Mottola, Steven
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Thermal response to, or generation of, sound vibration
381160, H04R 300
Patent
active
048316563
ABSTRACT:
This invention comprises a device for transducing the speech of a conference group gathered about a table. It is capable of wireless operation for use with hearing impaired amplification systems and remote conference recording. The device combines an acoustically controlled microphone and antenna system in a single unit with no visible wires, antenna, or electronics. Specifically, a single condenser microphone is mounted at the end of the frustoconical member which is suspended above and perpendicular to a horizontal reflector plate. The diaphragm of the microphone is parallel to the table top. The reflector plate also functions as an antenna in radio versions of the device. An opening at a predetermined specific angle between the cone and reflector plate deflects the sound waves eminating from any conversations about the table directly into the microphone causing it to produce a higher electrical output for those frequencies produced by the human voice. The opening to the microphone is the same from any side of the device producing uniform directional characteristics so that all conference participants can be heard equally well.
REFERENCES:
patent: 4434507 (1984-02-01), Thomas
Southern Robert R.
Treni Michael R.
Joel Richard A.
Mottola Steven
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