JPS54107301A - Silencing device of motor for elevator - Google Patents
Silencing device of motor for elevatorInfo
- Publication number
- JPS54107301A JPS54107301A JP1400578A JP1400578A JPS54107301A JP S54107301 A JPS54107301 A JP S54107301A JP 1400578 A JP1400578 A JP 1400578A JP 1400578 A JP1400578 A JP 1400578A JP S54107301 A JPS54107301 A JP S54107301A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- noise
- speaker
- elevator
- sounds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Elevator Control (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To achieve the reduction of noise by producing the sounds of the same frequencies as those of the noise generated from a motor from a speaker provided toward the motor.
CONSTITUTION: Silencing signal is outputted at the same frequencies as those of the noise generated by an armature 1 and with a deviation of phase by a time T from a speaker 14. Hence, by adjusting the position of the speaker 14 and the time T, the negating action owing to synthethis of the sounds of opposite phases is accomplished and the noise may be reduced.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1400578A JPS54107301A (en) | 1978-02-09 | 1978-02-09 | Silencing device of motor for elevator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1400578A JPS54107301A (en) | 1978-02-09 | 1978-02-09 | Silencing device of motor for elevator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54107301A true JPS54107301A (en) | 1979-08-23 |
Family
ID=11849090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1400578A Pending JPS54107301A (en) | 1978-02-09 | 1978-02-09 | Silencing device of motor for elevator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54107301A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS599699A (en) * | 1982-07-07 | 1984-01-19 | 日産自動車株式会社 | Control of sound field in chamber of automobile |
-
1978
- 1978-02-09 JP JP1400578A patent/JPS54107301A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS599699A (en) * | 1982-07-07 | 1984-01-19 | 日産自動車株式会社 | Control of sound field in chamber of automobile |
JPH04273B2 (en) * | 1982-07-07 | 1992-01-06 | Nissan Motor |
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