JPH0366295U - - Google Patents
Info
- Publication number
- JPH0366295U JPH0366295U JP12504089U JP12504089U JPH0366295U JP H0366295 U JPH0366295 U JP H0366295U JP 12504089 U JP12504089 U JP 12504089U JP 12504089 U JP12504089 U JP 12504089U JP H0366295 U JPH0366295 U JP H0366295U
- Authority
- JP
- Japan
- Prior art keywords
- microphones
- signal
- subtracter
- amplifier circuits
- output signals
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
第１図は本考案にかかる風雑音低減装置の一実
施例を説明するための図であつて、ビデオカメラ
に装備された風雑音低減装置の回路構成図であり
、第２図は従来の風雑音低減装置を説明するため
の第１図に対応する図である。
１０……左側用マイク、２０……右側用マイク
、３０……左側用アンプ回路、４０……右側用ア
ンプ回路、５０……左側用ローパスフイルタ、６
０……右側用ローパスフイルタ、７０……右側用
減算器、８０……左側用減算器。
FIG. 1 is a diagram for explaining one embodiment of the wind noise reduction device according to the present invention, and is a circuit diagram of the wind noise reduction device installed in a video camera, and FIG. FIG. 2 is a diagram corresponding to FIG. 1 for explaining the noise reduction device. 10...Microphone for left side, 20...Microphone for right side, 30...Amplifier circuit for left side, 40...Amplifier circuit for right side, 50...Low pass filter for left side, 6
0...Low pass filter for right side, 70...Subtractor for right side, 80...Subtractor for left side.
Claims (1)
を有する左側、右側マイクと、左側、右側マイク
の出力信号を夫々増幅する左側用、右側用アンプ
回路と、前記左側、右側マイクによつて変換され
た音声信号と中でも風の信号成分を透過するに必
要なカツトオフ周波数を夫々有する左側用、右側
用ローパスフイルタと、前記左側用、右側用アン
プ回路の各出力信号と前記右側用、左側用ローパ
スフイルタの各出力信号とを夫々減算する左側用
、右側用減算器とを具備していることを特徴とす
る風雑音低減装置。 Left and right microphones that are used adjacent to each other and both have directivity; left and right amplifier circuits that amplify the output signals of the left and right microphones, respectively; and audio converted by the left and right microphones. Left-side and right-side low-pass filters each having a cut-off frequency necessary to pass the signal and especially the wind signal component; output signals of the left-side and right-side amplifier circuits; and the right-side and left-side low-pass filters. 1. A wind noise reduction device comprising: a left side subtracter and a right side subtracter that respectively subtract an output signal from the output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504089U JPH0366295U (en) | 1989-10-25 | 1989-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504089U JPH0366295U (en) | 1989-10-25 | 1989-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366295U true JPH0366295U (en) | 1991-06-27 |
Family
ID=31672929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12504089U Pending JPH0366295U (en) | 1989-10-25 | 1989-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366295U (en) |
-
1989
- 1989-10-25 JP JP12504089U patent/JPH0366295U/ja active Pending
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