JPS61142900A - Phase adjusting device of stereo equipment - Google Patents

Phase adjusting device of stereo equipment

Info

Publication number
JPS61142900A
JPS61142900A JP60281485A JP28148585A JPS61142900A JP S61142900 A JPS61142900 A JP S61142900A JP 60281485 A JP60281485 A JP 60281485A JP 28148585 A JP28148585 A JP 28148585A JP S61142900 A JPS61142900 A JP S61142900A
Authority
JP
Japan
Prior art keywords
variable
frequency
circuit
analog delay
sound image
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
JP60281485A
Other languages
Japanese (ja)
Inventor
Takaaki Uno
鵜野 高明
Shigeyoshi Nakano
中野 成能
Chuji Suzuki
鈴木 忠二
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP60281485A priority Critical patent/JPS61142900A/en
Publication of JPS61142900A publication Critical patent/JPS61142900A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30Control circuits for electronic adaptation of the sound field

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

PURPOSE:To attain fine adjustment of sound image by applying a clock signal to an analog delay circuit comprising a CCD connected in cascade separately to both left/right channels of a stereo equipment while changing the frequency from an oscillator to make the phase difference variable. CONSTITUTION:A sound input 1 of each left/right channel is subjected to amplification 2, high-pass / band pass / low-pass processing are applied by filters 3a-3c, and the signal is divided into three frequency bands. Each frequency band is subjected separately to variable analog delay processing 4a-4c, and the resultant signal drives a tweeter 7a, a squaker 7a and a woofer 7c by using driver amplifiers 6a-6c via buffer amplifiers 5a-5c. In the variable analog delay circuits 4a-4c, the delay time is adjusted by using the CCD an variable frequency clock oscillating circuits 4a'-4c' to change the capacitance C or the resistance R. The phase difference of the sound amplifier is corrected or emphasized. Thus, the direction of sound image is made variable to attain fine sound image adjustment.

Description

【発明の詳細な説明】 本発明はステレオ装置におけるオーディオ周波数信号の
位相を調整する装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for adjusting the phase of audio frequency signals in a stereo system.

位相調整装置はオーデフォ増幅器における音質調整装置
(トーンコントロール)の位相差を補正又は強調する手
段として、或いはステレオ装置においては音像の方向可
変手段として利用されるものである。
The phase adjustment device is used as a means for correcting or emphasizing the phase difference of a tone control device in an audio amplifier, or as a means for changing the direction of a sound image in a stereo device.

オーディオ周波増幅装置には、音質調整装置が設けられ
ているが、これは主として各周波数帯域の信号成分の強
度比を変化させるものである。この調整によって周波数
特性ばかりでなく、その回路構成のため位相特性も変化
してしまうことはよく知られているところである。この
位相特性は聴感上かならずしも明確に定量化されていな
いが、通常各局波数帯域間で出来るだけ位相ずれを生じ
させないようにする事が望ましいとされている。
The audio frequency amplification device is provided with a sound quality adjustment device, which mainly changes the intensity ratio of signal components in each frequency band. It is well known that this adjustment changes not only the frequency characteristics but also the phase characteristics due to the circuit configuration. Although this phase characteristic has not necessarily been clearly quantified in terms of auditory perception, it is generally considered desirable to prevent phase shifts from occurring between the wave number bands of each station as much as possible.

またステレス装置においては、右チャンネルと左チヤン
ネル間のレベル差に比べて位相差が与える影響は小さい
けれども音像の方向性を決定する一因であ悟(とは知ら
れている。また各チャンネル間の位相差は周波数及びレ
ベルに応じて音像の方向性に影響を与える程度が異なる
ことも知られている。
In addition, in Stereth equipment, although the influence of the phase difference is small compared to the level difference between the right channel and the left channel, it is a factor that determines the directionality of the sound image. It is also known that the degree to which the phase difference affects the directionality of the sound image differs depending on the frequency and level.

本発明は以上のような点に鑑みてステレオ装置のオーデ
ィオ周波増幅装置の途中にアナログ遅延回路を縦続接続
し、該アナログ遅延回路の遅延時間を手動又は自動的に
変化させるものである。アナログ遅延線としてはCCD
 (Charge CoupledSemicondu
ctor電荷結合素子)又はBBD(Bucket B
rigade Devices )が適当であり、クロ
ック発振器の発振周波数を変化させることによって簡単
に遅延時間の調整が可能である。
In view of the above points, the present invention connects analog delay circuits in cascade in the middle of the audio frequency amplification device of a stereo system, and changes the delay time of the analog delay circuit manually or automatically. CCD as an analog delay line
(Charge Coupled Semiconductor
charge coupled device) or BBD (Bucket B
The delay time can be easily adjusted by changing the oscillation frequency of the clock oscillator.

第1図は本発明の位相調整装置の第1の実施例のブロッ
クダイヤグラムを示す。
FIG. 1 shows a block diagram of a first embodiment of the phase adjustment device of the present invention.

オーディオ周波信号は入力端子lに加えられ、プリアン
プ2を経て8つのフィルター、即ちバイパスフィルター
8a、バンドパスフィルター3b。
The audio frequency signal is applied to the input terminal l, passes through the preamplifier 2, and passes through eight filters, namely a bypass filter 8a and a bandpass filter 3b.

ローパスフィルター3cに同時に加えられここで3つの
周波数帯域に分割される。3つのフィルター3の出力は
それぞれ周波数帯域ごとに独立した3の系に加えられる
。3つの系は各々前記したフィルター3a〜3c、可変
アナログ遅延回路48〜4c、バッファーアンプ58〜
5c、  ドライアンプ6a〜6cを縦続接続して構成
される。各県の出力はその周波数帯域に対応したツイー
タ7a。
The signals are simultaneously applied to a low-pass filter 3c, where they are divided into three frequency bands. The outputs of the three filters 3 are applied to three independent systems for each frequency band. The three systems each include the aforementioned filters 3a to 3c, variable analog delay circuits 48 to 4c, and buffer amplifiers 58 to 4c.
5c and dry amplifiers 6a to 6c are connected in cascade. The output for each prefecture is from the tweeter 7a corresponding to that frequency band.

スコーカ7b、ウーハ−7cにそれぞれ接続される。It is connected to the squawker 7b and the woofer 7c, respectively.

上記可変アナログ遅延回路4は第2図に示すように、サ
ンプリング回路11、アナログシフトレジスタ12、電
荷検出及びアンプ13、サンプルホールド14を縦続接
続したいわゆるCCD部分15と、可変周波クロック発
振回路16、ドライバー17とよりなり、ドライバー1
7の出力はサンプリング回路11、アナログシフトレジ
スタ12、サンプルホールド14に加えられる。この回
路4ハB B Dで構成することもできる。
As shown in FIG. 2, the variable analog delay circuit 4 includes a so-called CCD section 15 in which a sampling circuit 11, an analog shift register 12, a charge detection/amplifier 13, and a sample hold 14 are connected in cascade, a variable frequency clock oscillation circuit 16, Driver 17 and driver 1
The output of 7 is applied to a sampling circuit 11, an analog shift register 12, and a sample hold 14. This circuit can also be composed of four circuits BBD.

従って、入力端子lに加えられたオーディオ周波信号は
アンプ2で増幅され、3つのフィルター3で高周波信号
、中間帯域信号、低周波信号に分割され可変アナログ遅
延回路4、バッファーアンプ5、ドライバーアンプ6を
経て、スピーカ7で再生される。
Therefore, the audio frequency signal applied to the input terminal l is amplified by the amplifier 2, and divided into a high frequency signal, an intermediate band signal, and a low frequency signal by three filters 3, a variable analog delay circuit 4, a buffer amplifier 5, and a driver amplifier 6. After that, it is played back on the speaker 7.

ここで可変周波クロック発振器16がCR発振器で構成
されており、従ってC(容量)又はR(抵抗)を可変に
すれば可変アナログ遅延回路4の遅延時間が変化する。
Here, the variable frequency clock oscillator 16 is constituted by a CR oscillator, and therefore, by making C (capacitance) or R (resistance) variable, the delay time of the variable analog delay circuit 4 changes.

可変アナログ遅延回路4の遅延時間を調整して音質調整
回路(トーンコントロールンで周波数特性とともに変化
した位相差分を手動で補正して各周波数帯域ごと位相ず
れを元の状態(位相差のない)に戻す。音質調整回路に
よって位相差の程度が予め判っている場合は、上記遅延
時間の調整手段即ち上記C又はRの可変手段を音質調整
回路の調整機構(多くの場合可変抵抗器〕と連動させれ
ばよい。
The delay time of the variable analog delay circuit 4 is adjusted to manually correct the phase difference that changes with the frequency characteristics in the tone control circuit (tone control circuit), and the phase shift is returned to its original state (no phase difference) for each frequency band. If the degree of phase difference is known in advance by the sound quality adjustment circuit, the delay time adjustment means, that is, the C or R variable means, is linked with the adjustment mechanism (variable resistor in most cases) of the sound quality adjustment circuit. That's fine.

各周波数帯域ごとに位相差を大きくして特殊な聴取環境
を作ることも可能である。
It is also possible to create a special listening environment by increasing the phase difference for each frequency band.

第3図は他の例を示し、この回路ではバッファーアンプ
5a 、5b 、5cの出力は1つのドライバーアンプ
21に加えられ、分割ネットワーク22を経てツイータ
23とウーハ−24に加えられる。
FIG. 3 shows another example, in which the outputs of buffer amplifiers 5a, 5b, and 5c are applied to one driver amplifier 21, and are applied to a tweeter 23 and a woofer 24 via a division network 22.

その他の構成は第1図と同じであるので同一符号を付し
て説明を省略する。この実施例の回路の動作は全て第1
図のものと同じである。
Since the other configurations are the same as those in FIG. 1, the same reference numerals are given and the explanation will be omitted. The operation of the circuit in this example is all based on the first
It is the same as the one shown in the figure.

第4図は更に他の例を示し、この回路は遅延時間の自動
可変を目的とするものである。この回路はバッファーア
ンプ5a〜5cの後段に振幅検出回路31a、31b、
31cをそれぞれ備えている。この回路31は整流回路
、積分回路及び正逆極性出力機能を有する回路とからな
る。回路31の出力は正逆の選択をする切換スイッチ3
2a。
FIG. 4 shows yet another example, and this circuit is intended to automatically vary the delay time. This circuit includes amplitude detection circuits 31a, 31b, and
31c. This circuit 31 consists of a rectifying circuit, an integrating circuit, and a circuit having a forward and reverse polarity output function. The output of the circuit 31 is a selector switch 3 that selects forward or reverse.
2a.

82b、32cを経て可変クロック発振器33a。Variable clock oscillator 33a via 82b and 32c.

88b、33cにそれぞれ導かれる。その他の回路構成
は第1図と同じであるので同一符号を付して説明を省略
する。
88b and 33c, respectively. Since the other circuit configurations are the same as those in FIG. 1, the same reference numerals are given and the explanation will be omitted.

この実施例の回路ではバッファーアンプ5の出力は振幅
検出回路31で信号のレベルの大きさが検出されスイッ
チ32を経て可変クロック発振器83に加えられ、従っ
て信号のレベルの大きさに応じて可変アナログ遅延回路
4の遅延時間が変化する。遅延時間が変化する向き、即
ち遅延時間が長くなるか、短かくなるかは振幅検8回路
31の+端子に切換スイッチ32を接続するか、一端子
に接続するかによって任意に選択することができる。
In the circuit of this embodiment, the signal level of the output of the buffer amplifier 5 is detected by the amplitude detection circuit 31, and is applied to the variable clock oscillator 83 via the switch 32. The delay time of the delay circuit 4 changes. The direction in which the delay time changes, that is, whether the delay time becomes longer or shorter, can be arbitrarily selected by connecting the changeover switch 32 to the + terminal of the amplitude detection circuit 31 or to one terminal. can.

本発明は2又は4チヤンネルステレス装置において、上
記したような可変アナログ遅延回路を各チャンネルに備
えてなり、音像の方向を決定或いは変化させる。
The present invention is a two- or four-channel stereophonic device, in which each channel is provided with a variable analog delay circuit as described above to determine or change the direction of a sound image.

以上のように本発明によればオーディオ増幅装置の位相
差を補正又は強調し、或いはステレオ装置においては音
像の方向を可変することができる位相調整装置を得るこ
とができる。また、クロック発振回路の発振周波数の変
化によって、遅延時間すなわち位相差量を連続的に任意
に可変することができ、ステレオ装置における微細な音
像調整も可能にする。
As described above, according to the present invention, it is possible to obtain a phase adjustment device capable of correcting or emphasizing the phase difference of an audio amplifying device, or changing the direction of a sound image in a stereo device. Further, by changing the oscillation frequency of the clock oscillation circuit, the delay time, that is, the amount of phase difference can be continuously and arbitrarily varied, making it possible to finely adjust the sound image in a stereo device.

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

第1図は本発明の一実施例の位相調整装置のブロックダ
イヤグラム、第2図は可変アナログ遅延回路のブロック
ダイヤグラム、第3図及び第4図は本発明のそれぞれ異
なる他の実施例の位相調整装置のブロックダイヤグラム
を示す。2,5.6はアンプ、3はフィルター、4は可
変アナログ遅延回路、16は可変クロック発振器。 代理人 弁理士 福 士 愛 彦(他2名)11図 之2図
FIG. 1 is a block diagram of a phase adjustment device according to one embodiment of the present invention, FIG. 2 is a block diagram of a variable analog delay circuit, and FIGS. 3 and 4 are phase adjustment diagrams of other different embodiments of the present invention. A block diagram of the device is shown. 2, 5, and 6 are amplifiers, 3 is a filter, 4 is a variable analog delay circuit, and 16 is a variable clock oscillator. Agent Patent attorney Aihiko Fuku (and 2 others) Figure 11-2

Claims (1)

【特許請求の範囲】[Claims] 1、ステレオ装置において、右チャンネルと左チャンネ
ルにそれぞれ、CCD又はBBDよりなるアナログ遅延
回路を縦続接続し、上記CCD又はBBDに周波数を可
変してクロック信号を供給するクロック発振回路を備え
てなることを特徴とするステレオ装置の位相調整装置。
1. In a stereo device, an analog delay circuit made of a CCD or BBD is connected in cascade to each of the right channel and the left channel, and a clock oscillation circuit is provided to supply a clock signal with a variable frequency to the CCD or BBD. A phase adjustment device for a stereo device characterized by:
JP60281485A 1985-12-12 1985-12-12 Phase adjusting device of stereo equipment Pending JPS61142900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60281485A JPS61142900A (en) 1985-12-12 1985-12-12 Phase adjusting device of stereo equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60281485A JPS61142900A (en) 1985-12-12 1985-12-12 Phase adjusting device of stereo equipment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP1234777A Division JPS5397355A (en) 1977-02-04 1977-02-04 Phase adjusting device

Publications (1)

Publication Number Publication Date
JPS61142900A true JPS61142900A (en) 1986-06-30

Family

ID=17639841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60281485A Pending JPS61142900A (en) 1985-12-12 1985-12-12 Phase adjusting device of stereo equipment

Country Status (1)

Country Link
JP (1) JPS61142900A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023914A (en) * 1988-03-11 1991-06-11 Bose Corporation Acoustical frequency response improving with non-minimum phase circuitry
US5121433A (en) * 1990-06-15 1992-06-09 Auris Corp. Apparatus and method for controlling the magnitude spectrum of acoustically combined signals
US5384856A (en) * 1991-01-21 1995-01-24 Mitsubishi Denki Kabushiki Kaisha Acoustic system
US5784474A (en) * 1994-11-10 1998-07-21 Meyer Sound Laboratories Incorporated Method and circuit for improving the polar response of a two-way horn-loaded loudspeaker system
JP2007528654A (en) * 2004-03-11 2007-10-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Method and system for processing audio signals
JP2008537407A (en) * 2005-04-13 2008-09-11 ボーズ・コーポレーション Multi-channel bass management

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098802A (en) * 1973-12-27 1975-08-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098802A (en) * 1973-12-27 1975-08-06

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023914A (en) * 1988-03-11 1991-06-11 Bose Corporation Acoustical frequency response improving with non-minimum phase circuitry
US5121433A (en) * 1990-06-15 1992-06-09 Auris Corp. Apparatus and method for controlling the magnitude spectrum of acoustically combined signals
US5384856A (en) * 1991-01-21 1995-01-24 Mitsubishi Denki Kabushiki Kaisha Acoustic system
US5784474A (en) * 1994-11-10 1998-07-21 Meyer Sound Laboratories Incorporated Method and circuit for improving the polar response of a two-way horn-loaded loudspeaker system
JP2007528654A (en) * 2004-03-11 2007-10-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Method and system for processing audio signals
JP2008537407A (en) * 2005-04-13 2008-09-11 ボーズ・コーポレーション Multi-channel bass management
US9055383B2 (en) 2005-04-13 2015-06-09 Bose Corporation Multi channel bass management

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