JPH045718U - - Google Patents
Info
- Publication number
- JPH045718U JPH045718U JP4609490U JP4609490U JPH045718U JP H045718 U JPH045718 U JP H045718U JP 4609490 U JP4609490 U JP 4609490U JP 4609490 U JP4609490 U JP 4609490U JP H045718 U JPH045718 U JP H045718U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- circuit
- phase difference
- difference detection
- phase correction
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は、この考案の自動位相補正装置の一実
施例を示す回路構成図、第２図は、第１図に示し
た回路各部の信号波形図、第３図は、第１図に示
した自動位相補正装置による補正効果を示す周波
数−位相特性図、第４図は、従来の自動レベル調
整装置を適用したＡＶプロセツサの一例を示す回
路構成図である。
１１……自動位相補正装置、１２……位相補正
回路、１３……位相差検出回路。
FIG. 1 is a circuit configuration diagram showing an embodiment of the automatic phase correction device of this invention, FIG. 2 is a signal waveform diagram of each part of the circuit shown in FIG. 1, and FIG. 3 is a diagram showing the signal waveforms shown in FIG. 1. FIG. 4 is a frequency-phase characteristic diagram showing the correction effect of the automatic phase correction device. FIG. 4 is a circuit configuration diagram showing an example of an AV processor to which a conventional automatic level adjustment device is applied. 11... Automatic phase correction device, 12... Phase correction circuit, 13... Phase difference detection circuit.
Claims (1)
号をもつてゼロクロス検出し、位相差に応じたレ
ベルをもつ位相差検出信号を生成する位相差検出
回路と、この位相差検出回路の出力に応じて前記
左右チヤンネルの音声信号の位相を相補的に補正
する位相補正回路とを具備する自動位相補正装置
。 (2) 前記位相補正回路は、前記位相差検出信号
に応じて回路定数が可変されるアナログ回路素子
を有し、一次又は数次の位相遅延特性と周波数に
依存しない平坦な振幅特性を有する全帯域通過フ
イルタであることを特徴とする請求項１記載の自
動位相補正装置。[Claims for Utility Model Registration] (1) A phase difference detection circuit that detects a zero crossing of a difference signal between left and right channel audio signals with a sum signal, and generates a phase difference detection signal having a level corresponding to the phase difference; An automatic phase correction device comprising: a phase correction circuit that complementarily corrects the phase of the audio signals of the left and right channels according to the output of the phase difference detection circuit. (2) The phase correction circuit has an analog circuit element whose circuit constant is varied according to the phase difference detection signal, and has a first-order or multiple-order phase delay characteristic and a flat amplitude characteristic independent of frequency. 2. The automatic phase correction device according to claim 1, wherein the automatic phase correction device is a bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4609490U JPH045718U (en) | 1990-04-27 | 1990-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4609490U JPH045718U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH045718U true JPH045718U (en) | 1992-01-20 |
Family
ID=31560870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4609490U Pending JPH045718U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045718U (en) |
-
1990
- 1990-04-27 JP JP4609490U patent/JPH045718U/ja active Pending