JPH0262895U - - Google Patents
Info
- Publication number
- JPH0262895U JPH0262895U JP14068988U JP14068988U JPH0262895U JP H0262895 U JPH0262895 U JP H0262895U JP 14068988 U JP14068988 U JP 14068988U JP 14068988 U JP14068988 U JP 14068988U JP H0262895 U JPH0262895 U JP H0262895U
- Authority
- JP
- Japan
- Prior art keywords
- hearing aid
- noise
- gain
- noise reduction
- circuit
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 230000000116 mitigating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は本考案に係る補聴器の一実施例を示す
構成図、第２図Ａ〜Ｄは本考案を説明するための
周波数特性図、第３図は従来例を示す構成図であ
る。
１…マイク、２…前置増幅器、３…ローパスフ
イルタ、４…騒音軽減回路、４ｂ…可変抵抗器、
５…騒音防止用スイツチ、６…トーンコントロー
ル回路、６ａ，６ｂ，６ｃ…可変抵抗器。
FIG. 1 is a block diagram showing an embodiment of a hearing aid according to the present invention, FIGS. 2A to 2D are frequency characteristic diagrams for explaining the present invention, and FIG. 3 is a block diagram showing a conventional example. 1... Microphone, 2... Preamplifier, 3... Low pass filter, 4... Noise reduction circuit, 4b... Variable resistor,
5... Noise prevention switch, 6... Tone control circuit, 6a, 6b, 6c... Variable resistor.
Claims (1)
騒音軽減回路を切替える騒音防止用スイツチを介
してイヤホンの電力増幅器の入力側に接続してな
る補聴器において、前記騒音軽減回路の入力側に
前置増幅器とローパスフイルタを設け、かつ前記
騒音防止用スイツチと電力増幅器の間に特定周波
数帯の利得を調整するトーンコントロール回路を
接続したことを特徴とする補聴器。 (2) 騒音軽減回路はハイパスフイルタで構成し
、騒音軽減すべき周波数帯域の利得を外部から調
整可能な音量調整手段を具備していることを特徴
とする請求項１記載の補聴器。 (3) トーンコントロール回路は、３００Ｈｚ、
１ＫＨｚ、３ＫＨｚ近傍周波数の利得を外部から
調整可能な可変抵抗器を内蔵していることを特徴
とする請求項１記載の補聴器。[Claims for Utility Model Registration] (1) In a hearing aid in which the output of a microphone is connected to the input side of a power amplifier of an earphone via a noise reduction circuit and a noise prevention switch that switches the noise reduction circuit, A hearing aid characterized in that a preamplifier and a low-pass filter are provided on the input side of the mitigation circuit, and a tone control circuit for adjusting the gain of a specific frequency band is connected between the noise prevention switch and the power amplifier. (2) The hearing aid according to claim 1, wherein the noise reduction circuit is constituted by a high-pass filter, and is equipped with a volume adjustment means that can externally adjust the gain of the frequency band in which the noise is to be reduced. (3) Tone control circuit is 300Hz,
2. The hearing aid according to claim 1, further comprising a built-in variable resistor whose gain at frequencies around 1 KHz and 3 KHz can be adjusted externally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14068988U JPH0262895U (en) | 1988-10-28 | 1988-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14068988U JPH0262895U (en) | 1988-10-28 | 1988-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0262895U true JPH0262895U (en) | 1990-05-10 |
Family
ID=31405090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14068988U Pending JPH0262895U (en) | 1988-10-28 | 1988-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0262895U (en) |
-
1988
- 1988-10-28 JP JP14068988U patent/JPH0262895U/ja active Pending
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