JPS60235071A - Phase meter - Google Patents

Phase meter

Info

Publication number
JPS60235071A
JPS60235071A JP59089464A JP8946484A JPS60235071A JP S60235071 A JPS60235071 A JP S60235071A JP 59089464 A JP59089464 A JP 59089464A JP 8946484 A JP8946484 A JP 8946484A JP S60235071 A JPS60235071 A JP S60235071A
Authority
JP
Japan
Prior art keywords
phase
circuit
emitting diode
light emitting
same
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
Application number
JP59089464A
Other languages
Japanese (ja)
Inventor
Shinji Suzuki
伸司 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YAMAKI DENKI KK
Original Assignee
YAMAKI DENKI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YAMAKI DENKI KK filed Critical YAMAKI DENKI KK
Priority to JP59089464A priority Critical patent/JPS60235071A/en
Publication of JPS60235071A publication Critical patent/JPS60235071A/en
Pending legal-status Critical Current

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  • Stereophonic System (AREA)
  • Measuring Phase Differences (AREA)

Abstract

PURPOSE:To obtain a phase meter capable of easily sensing phase difference, by displaying the phase difference between sound signals in a state classified into a same phase and an inverse phase by color. CONSTITUTION:Same phase and inverse phase levels are detected by a first differential amplifier 1 and a second differential amplifier 2 receiving inputs of a left channel 23 and a right channel 24 and, in the case of the same phase and the same level, levels and responses are processed through various circuits to drive a green light emitting diode 22. In the case of the inverse phase same level, a red light emitting diode 21 is driven in the same way. When the inputs of the left channel 23 and the right channel 24 are zero, the green light emitting diode 22 is driven. Therefore, phase difference can be easily sensed.

Description

【発明の詳細な説明】 本発明は、位相計に関するもので、音声信号の位相差を
同相、逆相に色分けして表示するバーグラフメーターで
ある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a phase meter, and is a bar graph meter that displays the phase difference of audio signals by color-coded into in-phase and anti-phase.

従来の位相計は、いわゆるブラウン管方式を採っており
、これは広いスペースをとると共に生産コスト上の不利
益があった。
Conventional phase meters have adopted a so-called cathode ray tube system, which requires a large amount of space and is disadvantageous in terms of production costs.

また、位相計の表示を読み取るのに表われた波形を視読
しなければならないので、読み取り技術を要し成る程度
の慣れを必要としていた。
Furthermore, since the waveform appearing on the phase meter must be visually read in order to read the display, a certain degree of experience is required in reading techniques.

本発明は、こうした問題点を解決すべく提案されるもの
で、以下実施例を説明してゆく。
The present invention is proposed to solve these problems, and examples thereof will be described below.

本発明は、左チャンネル23と右チャンネル24の入力
を受けた第一差動アンプ1、第二差動アンプ2で同相、
逆相のレベルを検出させ、各種回路を経て、同相同レベ
ルの場合はレベルとレスポンスを処理した後、緑の発光
ダイオード22をドライブさせ、逆相同レベルの場合は
同様にして赤の発光ダイオード21をドライブさせ、左
チャンネル23、右チヤンネル240入力が00場合は
緑の発光ダイオード22をドライブさせる構成と同相、
逆相を緑の発光ダイオード22、赤の発光ダイオード2
1で色分は表示するバーグラフメーター25から成るも
のである。
In the present invention, the first differential amplifier 1 and the second differential amplifier 2 receiving the inputs of the left channel 23 and the right channel 24 are in phase,
The level of the opposite phase is detected, and after passing through various circuits and processing the level and response in the case of the same level and the same phase, the green light emitting diode 22 is driven, and in the case of the same level of the opposite phase, the red light emitting diode 21 is driven When the left channel 23 and right channel 240 inputs are 00, the green light emitting diode 22 is driven.
Green light emitting diode 22, red light emitting diode 2 for reverse phase
1, the color segment is made up of a bar graph meter 25 that displays it.

実施例の位相計では、位相差を同相については緑の発光
ダイオード、逆相については赤の発光ダイオードに色分
けして表示する構成をとっている。
The phase meter of the embodiment has a configuration in which the phase difference is displayed in a color-coded manner using a green light-emitting diode for in-phase signals and a red light-emitting diode for reverse-phase signals.

第1図では、緑色のドツトを12個直線上に配列し、同
一線上の反対側に赤色のドツトを12個配列させた構成
を示している。位相差がない場合は、緑の発光ダイオー
ド22のみが点灯し、動作としてはレベル計の機能と同
様である。位相差が生じた場合は、赤の発光ダイオード
21が位相差の度合により変f)を表示する。
FIG. 1 shows a configuration in which 12 green dots are arranged in a straight line and 12 red dots are arranged on the opposite side of the same line. When there is no phase difference, only the green light emitting diode 22 lights up, and the operation is similar to that of a level meter. When a phase difference occurs, the red light emitting diode 21 displays a variable f) depending on the degree of the phase difference.

第2図は、本発明にかかるブロック回路図であるが、左
右のチャンネルの入力を第一差動アンプ1、第二差動ア
ンプ2でそれぞれ受け、左チャンネル23を正負に分け
それを第二差動アンプ2の正の波形と比べることにより
、同相、逆相のレベルを検出する。
FIG. 2 is a block circuit diagram according to the present invention, in which left and right channel inputs are received by the first differential amplifier 1 and the second differential amplifier 2, respectively, and the left channel 23 is divided into positive and negative channels, and By comparing with the positive waveform of the differential amplifier 2, the in-phase and anti-phase levels are detected.

第一回路3ば、第一差動アンプ1の半波整流回路であり
、第二回路4は第一差動アンプlからの出力を180°
反転し半波整流する回路である。
The first circuit 3 is a half-wave rectifier circuit for the first differential amplifier 1, and the second circuit 4 converts the output from the first differential amplifier 1 by 180 degrees.
This is a circuit that performs inversion and half-wave rectification.

また、第三回路5は第二差動アンプ2の半波整流回路で
ある。
Further, the third circuit 5 is a half-wave rectifier circuit of the second differential amplifier 2.

同相同レベルの場合、第三回路5−第一回路3である第
四回路6の出力がOであり、第二回路5−第二回路4で
ある第五回路7からの波形が第二差動アンプ2で受けた
入力と同じ波形であり、第四回路60半波整流−第五回
路70半波整流とoffset調整回路たる第九回路1
1では負の半波出力となる。
In the case of the same phase and same level, the output of the fourth circuit 6 which is the third circuit 5 - the first circuit 3 is O, and the waveform from the fifth circuit 7 which is the second circuit 5 - the second circuit 4 is the second difference. It has the same waveform as the input received by the dynamic amplifier 2, and the fourth circuit 60 is a half-wave rectifier, the fifth circuit 70 is a half-wave rectifier, and the ninth circuit 1 is an offset adjustment circuit.
When it is 1, it becomes a negative half-wave output.

このとき第四回路6+第五回路7である第六回路8−第
二差動アンプ2である第七回路9の出力は0で゛あるの
で、第七回路9の出力がそのまま、第二アンプ回路13
の負の波形−第一アンプ回路12である弟子回路14の
出力となる。
At this time, the output of the fourth circuit 6 + the sixth circuit 8 which is the fifth circuit 7 - the seventh circuit 9 which is the second differential amplifier 2 is 0, so the output of the seventh circuit 9 is directly transmitted to the second amplifier. circuit 13
The negative waveform of - becomes the output of the disciple circuit 14 which is the first amplifier circuit 12.

その後の回路で第三アンプ回路15を経て第一動特性整
流回路17を介してレベルとレスポンスを処理し、緑の
発光ダイオード22をドライブする。
In the subsequent circuit, the level and response are processed through the third amplifier circuit 15 and the first dynamic characteristic rectifier circuit 17 to drive the green light emitting diode 22.

逆相(180°)同レベルの場合、第五回路7からの出
力が0、第四回路6からの出力が第二差動アンプ2で受
けた入力と同じ波形となる。
In the case of opposite phases (180°) and the same level, the output from the fifth circuit 7 is 0, and the output from the fourth circuit 6 has the same waveform as the input received by the second differential amplifier 2.

第七回路9は、ブロック図からみて第六回路8−第二差
動アンプ2であるので出力はOlまた第七回路9からは
正の半波出力となるので、弟子回路14からの出力は0
である。第九回路11からの出力は正の半波出力である
ので、第四アンプ回路16に流れ、第二動特性整流回路
18を介してレベルとレスポンスを処理され赤の発光ダ
イオード21をドライブする。
The seventh circuit 9 is the sixth circuit 8 - second differential amplifier 2 when viewed from the block diagram, so the output is Ol, and since the seventh circuit 9 is a positive half-wave output, the output from the disciple circuit 14 is 0
It is. Since the output from the ninth circuit 11 is a positive half-wave output, it flows to the fourth amplifier circuit 16, where the level and response are processed through the second dynamic characteristic rectifier circuit 18 and drives the red light emitting diode 21.

左チャンネル23または右チャンネル24のどちらか一
方の入力が0である場合、第六回路8で同極性の波形が
プラスされることになり、出力としては同相、逆相の出
力レベルの2倍出力されることになる。また、このレベ
ルは第八回路IOで余波整流され、第一アンプ回路12
で調整することができる。
When the input of either the left channel 23 or the right channel 24 is 0, a waveform of the same polarity is added to the sixth circuit 8, and the output is twice the output level of the in-phase and anti-phase. will be done. Further, this level is rectified by the eighth circuit IO, and the first amplifier circuit 12
It can be adjusted with.

左チャンネルの入力がOである場合、第一回路3、第二
回路4は0、第三回路5は正の半波第四回路6、第五回
路7は正の半波となり、第六回路8で第四回路6十第五
回路7となり正の2倍の半波波形となる。この条件で第
九回路11はOであるので、第七回路9の出力がレベル
、レスポンス調整後、緑の発光ダイオード22をドライ
ブする出力となる。なおドライブは第−LEDドライバ
ー19、第二LEDドライバー20により行なわれる。
When the input of the left channel is O, the first circuit 3 and the second circuit 4 are 0, the third circuit 5 is a positive half wave, the fourth circuit 6 and the fifth circuit 7 are positive half waves, and the sixth circuit is a positive half wave. 8, the fourth circuit becomes 60, and the fifth circuit becomes 7, resulting in a positive half-wave waveform. Under this condition, the ninth circuit 11 is O, so the output of the seventh circuit 9 becomes the output that drives the green light emitting diode 22 after adjusting the level and response. Note that driving is performed by a first LED driver 19 and a second LED driver 20.

右チャンネルの入力が0である場合、第一回路3、第二
回路4は互いに180°ずれた正の半波整流波形、第三
回路5はO1第四回路6、第五回路7は負の半波となり
、第六回路8で第四回路6十第五回路7となり負の全波
整流波形となる。この条件で第九回路11はOであるの
で、第七回路9の出力(正の波形となる)がレベル、レ
スポンス調整後、緑の発光ダイオード22をドライブす
る出力となる。
When the right channel input is 0, the first circuit 3 and the second circuit 4 are positive half-wave rectified waveforms shifted by 180 degrees from each other, the third circuit 5 is O1, the fourth circuit 6, and the fifth circuit 7 are negative half-wave rectified waveforms. It becomes a half wave, and the sixth circuit 8 becomes the fourth circuit 60, and the fifth circuit 7 becomes a negative full wave rectified waveform. Under this condition, the ninth circuit 11 is O, so the output of the seventh circuit 9 (which has a positive waveform) becomes the output that drives the green light emitting diode 22 after adjusting the level and response.

本発明の動作は以上のごとくであるが次のような条件で
実施してみた。周波数範囲を30H2〜20 KHz 
、入力を平衡、ハイインピーダンス、基準入力レベルを
−20dB電源をDC±18 V、120mA以下とし
たのである。
The operation of the present invention is as described above, and it was implemented under the following conditions. Frequency range 30H2~20KHz
The input is balanced, high impedance, and the reference input level is -20 dB.The power supply is DC ±18 V and 120 mA or less.

第3図に示した動作波形を実際の動作表示としてみると
、位相差がθ°、360°の場合は十目盛へ振れ、18
0°の場合は一目盛へ振れる。θ。
Looking at the operating waveform shown in Figure 3 as an actual operating display, when the phase difference is θ°, 360°, it swings to the 10th scale, and 18
If it is 0°, it will swing to one scale. θ.

→180°へと位相がずれてゆくに従い目盛は子方向の
目盛が減少してゆき一方向の目盛が徐々に増加し180
°で一目盛のみとなる。一方、180゜→360°へと
位相がずれてゆくに従い目盛は一方向の目盛が減少して
ゆき子方向の目盛が徐々に増加し360°で十目盛のみ
となる。
→As the phase shifts to 180°, the scale in the child direction decreases, and the scale in one direction gradually increases to 180°.
There is only one scale at °. On the other hand, as the phase shifts from 180° to 360°, the scale in one direction decreases and the scale in the downward direction gradually increases until there are only 10 scales at 360°.

左右どちらかのチャンネルに入力がなくなった場合、緑
の発光ダイオード22が12Dot点灯する。赤の発光
ダイオード21は位相差が生じた時のみ点灯する。
When there is no input to either the left or right channel, the green light emitting diode 22 lights up 12 dots. The red light emitting diode 21 lights up only when a phase difference occurs.

なお、入力レベル−20dBの場合、同相同レベル入力
又は、逆相同レベル入力を同時に印加したとき士又は−
表示まで立上がる時間は200〜300m5 、同相同
レベル入力又は、逆相同レベル入力を印加しておき同時
に両チャンネルの入力を ■に落としたときO表示まで
落ちるのにかかる復帰時間は200〜300 msであ
った。
In addition, in the case of an input level of -20 dB, when in-phase same-level inputs or anti-phase same-level inputs are simultaneously applied, the difference or -
The time it takes to rise to the display is 200 to 300 m5, and when you apply in-phase, same-level input or negative-phase, same-level input and simultaneously reduce the inputs of both channels to ■, the recovery time it takes to fall to the O display is 200 to 300 ms. Met.

以上のごとく、本発明によれば小さなスペース上で音声
信号の位相差を同相、逆相で色分は表示できるので場所
をとらないと共に視覚的に見易い応答速度となっており
位相差の感知を容易にできる位相計を提供できることと
なった。
As described above, according to the present invention, the phase difference of the audio signal can be displayed in the same phase and in reverse phase in color in a small space, so it does not take up much space, and the response speed is easy to visually see, making it possible to detect the phase difference. We are now able to provide a phase meter that is easy to make.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、位相計のバーグラフメータ一平面図。 第2図は、ブロック回路図。 第3図は、ブロック回路の動作波形図。 図中 1:第一差動アンプ 2:第二差動アンプ 3:第一回路 4:第二回路 5:第三回路 6:第四回路 7:第五回路 8:第六回路 9:第七回路 10:第八回路 11:第九回路 12:第一アンプ回路 13:第三アンプ回路 14:弟子回路 15:第三アンプ回路 16:第四アンプ回路 17:第一動特性整流回路 18:第二動特性整流回路 19:第−LEDドライバー 20:第二L E Dドライバー 21:赤の発光ダイオード 22:緑の発光ダイオード 23:左チャンネル 24:右チャンネル 25:バーグラフメーター 特許出願人 ヤマキ電気株式会社 代 理 人 嶋 本 久寿弥太 −。 9 第14 (offset) 第3図 FIG. 1 is a plan view of a bar graph meter of a phase meter. FIG. 2 is a block circuit diagram. FIG. 3 is an operational waveform diagram of the block circuit. In the figure 1: First differential amplifier 2: Second differential amplifier 3: First circuit 4: Second circuit 5: Third circuit 6: Fourth circuit 7: Fifth circuit 8: Sixth circuit 9: Seventh circuit 10: Eighth circuit 11: Ninth circuit 12: First amplifier circuit 13: Third amplifier circuit 14: Disciple circuit 15: Third amplifier circuit 16: Fourth amplifier circuit 17: First dynamic characteristic rectifier circuit 18: Second dynamic characteristic rectifier circuit 19: No.-LED driver 20: Second LED driver 21: Red light emitting diode 22: Green light emitting diode 23: Left channel 24: Right channel 25: Bar graph meter Patent applicant Yamaki Electric Co., Ltd. Yata Kusuzumi Shimamoto −. 9th 14th (offset) Figure 3

Claims (1)

【特許請求の範囲】[Claims] 左右チャンネルの人力を受けた差動アンプで同相、逆相
のレベルを検出させ、各種回路を経テ、同相同レベルの
場合ハレベルとレスポンスを処理した後、緑の発光ダイ
オードをドライブさせ、逆相同レベルの場合は同様にし
て赤の発光ダイオードをドライブさせ、左チャンネルと
右チャンネルの入力が00場合は緑の発光ダイオードを
ドライブさせる構成と同相、逆相を緑、赤の発光ダイオ
ードで色分は表示するバーグラフメーターから成ること
を特徴とする位相計。
The in-phase and anti-phase levels are detected by the differential amplifiers of the left and right channels, and after passing through various circuits and processing the HA level and response in the case of in-phase and the same level, the green light emitting diode is driven, and the in-phase and anti-phase levels are detected. In the case of level, the red light emitting diode is driven in the same way, and when the left channel and right channel inputs are 00, the green light emitting diode is driven. A phase meter comprising a bar graph meter that displays.
JP59089464A 1984-05-07 1984-05-07 Phase meter Pending JPS60235071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59089464A JPS60235071A (en) 1984-05-07 1984-05-07 Phase meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59089464A JPS60235071A (en) 1984-05-07 1984-05-07 Phase meter

Publications (1)

Publication Number Publication Date
JPS60235071A true JPS60235071A (en) 1985-11-21

Family

ID=13971427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59089464A Pending JPS60235071A (en) 1984-05-07 1984-05-07 Phase meter

Country Status (1)

Country Link
JP (1) JPS60235071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481821A2 (en) * 1990-10-19 1992-04-22 Leader Electronics Corp. Method and apparatus for determining phase correlation of a stereophonic signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481821A2 (en) * 1990-10-19 1992-04-22 Leader Electronics Corp. Method and apparatus for determining phase correlation of a stereophonic signal

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