JPH0223192U - - Google Patents
Info
- Publication number
- JPH0223192U JPH0223192U JP9643788U JP9643788U JPH0223192U JP H0223192 U JPH0223192 U JP H0223192U JP 9643788 U JP9643788 U JP 9643788U JP 9643788 U JP9643788 U JP 9643788U JP H0223192 U JPH0223192 U JP H0223192U
- Authority
- JP
- Japan
- Prior art keywords
- helmholtz resonator
- acoustic device
- vibrator
- driven
- resonator
- 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
- 230000002040 relaxant effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000011514 reflex Effects 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9643788U JPH0223192U (fr) | 1988-07-22 | 1988-07-22 | |
EP89104837A EP0334238B1 (fr) | 1988-03-25 | 1989-03-17 | Appareil acoustique |
DE68919495T DE68919495T2 (de) | 1988-03-25 | 1989-03-17 | Akustischer Apparat. |
US07/326,880 US5173575A (en) | 1988-03-25 | 1989-03-21 | Acoustic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9643788U JPH0223192U (fr) | 1988-07-22 | 1988-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0223192U true JPH0223192U (fr) | 1990-02-15 |
Family
ID=31321344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9643788U Pending JPH0223192U (fr) | 1988-03-25 | 1988-07-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0223192U (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61294992A (ja) * | 1985-06-14 | 1986-12-25 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | 電気信号を音響信号に変換する装置 |
-
1988
- 1988-07-22 JP JP9643788U patent/JPH0223192U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61294992A (ja) * | 1985-06-14 | 1986-12-25 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | 電気信号を音響信号に変換する装置 |