JPH01143593U - - Google Patents
Info
- Publication number
- JPH01143593U JPH01143593U JP3078788U JP3078788U JPH01143593U JP H01143593 U JPH01143593 U JP H01143593U JP 3078788 U JP3078788 U JP 3078788U JP 3078788 U JP3078788 U JP 3078788U JP H01143593 U JPH01143593 U JP H01143593U
- Authority
- JP
- Japan
- Prior art keywords
- correction signal
- duct
- speaker
- sound
- noise
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Duct Arrangements (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
第１図は本考案の消音装置の代表的な実施例の
構成を示す図、第２図は従来の消音装置の構成を
示す図である。
１……送風機、２……ダクト、３……マイクロ
ホン、４……デジタルフイルタ、５……増幅器、
６……スピーカーシステム、７……スピーカー、
８……パツシブラジエータ。
FIG. 1 is a diagram showing the configuration of a typical embodiment of the muffling device of the present invention, and FIG. 2 is a diagram showing the configuration of a conventional muffling device. 1...Blower, 2...Duct, 3...Microphone, 4...Digital filter, 5...Amplifier,
6...Speaker system, 7...Speaker,
8...Passive radiator.
Claims (1)
騒音信号に変換するマイクロホン３と、この騒音
信号と逆の特性を有する補正信号を形成する補正
信号形成回路４と、この補正信号を増幅する増幅
器５と、この補正信号を音声に変換して上記ダク
ト２内に放射するスピーカー７を有するスピーカ
ーシステム６とを具備する消音装置において、こ
のスピーカーシステム６にダクト２に対向するパ
ツシブラジエータ８を設け、このパツシブラジエ
ータ８の支持コンプライアンスを上記スピーカー
７の振動系の支持コンプライアンスより小さくし
たことを特徴とする消音装置。 A duct 2, a microphone 3 that collects noise in the duct 2 and converts it into a noise signal, a correction signal forming circuit 4 that forms a correction signal having characteristics opposite to this noise signal, and amplifies this correction signal. In the sound damping device, the speaker system 6 includes an amplifier 5 that converts the correction signal into sound and a speaker 7 that emits the sound into the duct 2. , and the support compliance of the passive radiator 8 is made smaller than the support compliance of the vibration system of the speaker 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3078788U JPH0715037Y2 (en) | 1988-03-07 | 1988-03-07 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3078788U JPH0715037Y2 (en) | 1988-03-07 | 1988-03-07 | Silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01143593U true JPH01143593U (en) | 1989-10-02 |
| JPH0715037Y2 JPH0715037Y2 (en) | 1995-04-10 |
Family
ID=31256158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3078788U Expired - Lifetime JPH0715037Y2 (en) | 1988-03-07 | 1988-03-07 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715037Y2 (en) |
-
1988
- 1988-03-07 JP JP3078788U patent/JPH0715037Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0715037Y2 (en) | 1995-04-10 |
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