JPH0124971Y2 - - Google Patents
Info
- Publication number
- JPH0124971Y2 JPH0124971Y2 JP1981083294U JP8329481U JPH0124971Y2 JP H0124971 Y2 JPH0124971 Y2 JP H0124971Y2 JP 1981083294 U JP1981083294 U JP 1981083294U JP 8329481 U JP8329481 U JP 8329481U JP H0124971 Y2 JPH0124971 Y2 JP H0124971Y2
- Authority
- JP
- Japan
- Prior art keywords
- audio
- circuit
- audio circuit
- capacitor
- output terminal
- 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.)
- Expired
Links
- 230000001052 transient effect Effects 0.000 claims description 10
- 230000005236 sound signal Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は電源オンオフ時に発生する過渡音を簡
単に軽減することができる過渡音軽減装置を提供
するものである。[Detailed Description of the Invention] The present invention provides a transient sound reduction device that can easily reduce transient noise generated when power is turned on and off.
第１図は従来例における過渡音軽減装置であ
り、第１の音声回路１の音声出力端子をコンデン
サ２を介して第２の音声回路３の音声入力端子に
接続する。この装置において第１の音声回路の電
源がオンオフされ図示の音声信号がコンデンサ２
を通つて第２の音声回路３に伝えられたとする
と、第２の音声回路３の入力端子には図示のよう
に過渡音ａ，ｂを持つた音声信号が入ることにな
る。 FIG. 1 shows a conventional transient sound reduction device, in which the audio output terminal of a first audio circuit 1 is connected to the audio input terminal of a second audio circuit 3 via a capacitor 2. In this device, the power of the first audio circuit is turned on and off, and the audio signal shown in the figure is transmitted to the capacitor 2.
If the signal is transmitted to the second audio circuit 3 through the audio signal, an audio signal having transient sounds a and b will be input to the input terminal of the second audio circuit 3 as shown in the figure.
そこで、本考案はこの過渡音を軽減しようとす
るものであり、以下本考案の一実施例について図
面を参照して説明する。 Therefore, the present invention aims to reduce this transient sound, and one embodiment of the present invention will be described below with reference to the drawings.
第２図に示すように、第１の音声回路４の音声
出力端子をツエナーダイオード５のカソードに接
続し、ツエナーダイオード５のアノードを抵抗６
を介して接地するとともにコンデンサ７を介して
第２の音声回路の音声入力端子に接続する。ツエ
ナーダイオード５のツエナー電圧は第１の音声回
路４の音声出力端子における定常時の直流電圧と
伝達される音声信号の最大振幅の1/2との差より
小さく設定される。 As shown in FIG. 2, the audio output terminal of the first audio circuit 4 is connected to the cathode of the Zener diode 5, and the anode of the Zener diode 5 is connected to the resistor 6.
It is connected to the audio input terminal of the second audio circuit via the capacitor 7. The Zener voltage of the Zener diode 5 is set to be smaller than the difference between the steady-state DC voltage at the audio output terminal of the first audio circuit 4 and 1/2 of the maximum amplitude of the transmitted audio signal.
このように構成すると、第２図のように電源が
オンオフされて図示のような音声信号が伝えられ
たとしてもツエナーダイオード５で過渡音はほぼ
除去され図示のような良好な音声が伝えられる。 With this configuration, even if the power is turned on and off as shown in FIG. 2 and an audio signal as shown is transmitted, the Zener diode 5 substantially removes the transient sound and transmits the good sound as shown.
以上のように本考案は音声信号伝送経路にツエ
ナーダイオードを設けると云つた簡単な手段で不
快な過渡音を軽減することができるものである。 As described above, the present invention can reduce unpleasant transient sounds by a simple means such as providing a Zener diode in the audio signal transmission path.
第１図は従来例における過渡音軽減装置の回路
図、第２図は本考案の一実施例における過渡音軽
減装置の回路図。
４……第１の音声回路、５……ツエナーダイオ
ード、７……コンデンサ、８……第２の音声回
路。
FIG. 1 is a circuit diagram of a conventional transient sound reducing device, and FIG. 2 is a circuit diagram of a transient sound reducing device in an embodiment of the present invention. 4... First audio circuit, 5... Zener diode, 7... Capacitor, 8... Second audio circuit.
Claims (1)
路の音声入力端子間に、第１の音声回路の音声出
力端子における定常時の直流電圧と、伝達される
音声信号の最大振幅の1/2との差より小さく設定
されたツエナー電圧を有するツエナーダイオード
とコンデンサとを直列に接続し、その中点よりア
ース間に抵抗を接続してなる過渡音軽減装置。 Between the audio output terminal of the first audio circuit and the audio input terminal of the second audio circuit, the direct current voltage at the audio output terminal of the first audio circuit in a steady state and 1/1 of the maximum amplitude of the transmitted audio signal are applied. A transient sound reduction device consisting of a Zener diode and a capacitor connected in series, each having a Zener voltage set to be smaller than the difference between the Zener voltage and the capacitor, and a resistor connected between the midpoint and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981083294U JPH0124971Y2 (en) | 1981-06-05 | 1981-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981083294U JPH0124971Y2 (en) | 1981-06-05 | 1981-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195211U JPS57195211U (en) | 1982-12-10 |
| JPH0124971Y2 true JPH0124971Y2 (en) | 1989-07-27 |
Family
ID=29878733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981083294U Expired JPH0124971Y2 (en) | 1981-06-05 | 1981-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0124971Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256771U (en) * | 1975-10-22 | 1977-04-23 |
-
1981
- 1981-06-05 JP JP1981083294U patent/JPH0124971Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256771U (en) * | 1975-10-22 | 1977-04-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195211U (en) | 1982-12-10 |