Title:
TELEPHONE SET
Document Type and Number:
Japanese Patent JPH05284079
Kind Code:
A
Abstract:
PURPOSE: To provide a telephone set which selectively amplifies audio signals.
CONSTITUTION: This telephone set is provided with audio frequency dividing parts 22a, 22b... to divide the frequency component of an audio band into prescribed audio frequency bands, plural audio amplifying parts 23a, 23b... connected to these audio frequency dividing parts 22a, 22b... so as to amplify the audio signals for each prescribed audio frequency, and gain control part 29 connected to these plural audio amplifying parts 23a, 23b... and controlling the grains of the plural amplifying parts 23a, 23b... compared with a set value set by a surrounding sound.
More Like This:
| JPS6077534 | TRANSMITTER-RECEIVER |
| JP3093373 | [Name of invention] Dual band transmitter / receiver |
| JPH0742284 | [Name of device] RF data transceiver |
Inventors:
Tomoyuki Shinohara
Application Number:
JP8241592A
Publication Date:
October 29, 1993
Filing Date:
April 03, 1992
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04B1/40; H04B7/26; H04M1/60; H04W88/02; (IPC1-7): H04B7/26; H04B1/40; H04M1/60
Attorney, Agent or Firm:
Kazuo Sato (3 others)