Title:
ON BOARD ACOUSTIC DEVICE
Document Type and Number:
Japanese Patent JP3275662
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily hear the operation recognition sound that is produced from an electroacoustic transducer with no elimination of the sound by installing a 2nd acoustic equipment in a vehicle room and a 1st acoustic equipment at a place separate from the 2nd acoustic equipment.
SOLUTION: A 2nd acoustic equipment 1 is installed in a vehicle room, and a 1st acoustic equipment 2 is installed at a place separate from the equipment 1. Then the output of a transmitter circuit 10 which is driven in an operation input mode of an operation input circuit 3 is mixed with the acoustic signals by a mixing circuit 13, and these mixture signals are reproduced by the equipment 1 installed in the vehicle room. Therefore, the operation recognition sound of the equipment 2 is outputted from the equipment 1 and therefore never eliminated by the reproduced sounds of the equipment 1. It is also effective to add a muting circuit to the equipment 1 to cut off the output of the circuit 13 or other acoustic signals.
Inventors:
Daisuke Suzuki
Application Number:
JP28124795A
Publication Date:
April 15, 2002
Filing Date:
October 30, 1995
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H03G3/24; H03G1/02; (IPC1-7): H03G1/02
Domestic Patent References:
| JP5338507A | ||||
| JP1202549A | ||||
| JP1196591A | ||||
| JP5666792A | ||||
| JP677347U | ||||
| JP62104188U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)