JPH0418900U - - Google Patents
Info
- Publication number
- JPH0418900U JPH0418900U JP5855390U JP5855390U JPH0418900U JP H0418900 U JPH0418900 U JP H0418900U JP 5855390 U JP5855390 U JP 5855390U JP 5855390 U JP5855390 U JP 5855390U JP H0418900 U JPH0418900 U JP H0418900U
- Authority
- JP
- Japan
- Prior art keywords
- head
- user
- secondary sound
- microphone
- speaker
- 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
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5855390U JPH0418900U (sv) | 1990-06-01 | 1990-06-01 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5855390U JPH0418900U (sv) | 1990-06-01 | 1990-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0418900U true JPH0418900U (sv) | 1992-02-17 |
Family
ID=31584270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5855390U Pending JPH0418900U (sv) | 1990-06-01 | 1990-06-01 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0418900U (sv) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009029405A (ja) * | 2007-06-22 | 2009-02-12 | Panasonic Corp | 騒音制御装置 |
-
1990
- 1990-06-01 JP JP5855390U patent/JPH0418900U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009029405A (ja) * | 2007-06-22 | 2009-02-12 | Panasonic Corp | 騒音制御装置 |
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