JPH0715632B2 - Distortion adding device for electronic musical instruments using a vacuum tube - Google Patents
Distortion adding device for electronic musical instruments using a vacuum tubeInfo
- Publication number
- JPH0715632B2 JPH0715632B2 JP5019667A JP1966793A JPH0715632B2 JP H0715632 B2 JPH0715632 B2 JP H0715632B2 JP 5019667 A JP5019667 A JP 5019667A JP 1966793 A JP1966793 A JP 1966793A JP H0715632 B2 JPH0715632 B2 JP H0715632B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum tube
- distortion
- vca
- adding device
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electrophonic Musical Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は真空管を用いた電子楽器
の歪付加装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distortion adding device for an electronic musical instrument using a vacuum tube.
【０００２】[0002]
【従来の技術】ポピュラーミュージックの例えばジャ
ズ、ロックの分野ではオルガン、ギターなどの音を故意
に歪ませた音色を使用した演奏が行なわれている。その
歪を得るために真空管を利用する技術は一般的であり、
例えばディストレーション或いはオーバードライブとい
った装置には、歪を発生させる回路に真空管を用いたも
のが存在する。これらの装置は真空管を用いた低周波増
幅回路に適正以上の大きな信号を入力すると、回路を通
過するときに信号が歪んでしまうことを利用しており、
歪率は回路に入力する信号のレベルで変化する。2. Description of the Related Art In the fields of popular music, such as jazz and rock, performances are performed using tone colors that intentionally distort the sounds of organs and guitars. The technique of using a vacuum tube to obtain the distortion is common,
For example, there is a device that uses a vacuum tube for a circuit that generates distortion in devices such as a installation or overdrive. These devices make use of the fact that when a large signal that is more than appropriate is input to a low-frequency amplifier circuit using a vacuum tube, the signal is distorted when passing through the circuit.
The distortion rate changes depending on the level of the signal input to the circuit.
【０００３】従来の方式の歪付加装置は図１に示された
ような構成を有し、楽音は最初、前置増幅回路で増幅さ
れ、真空管低周波増幅回路に入り、そこで歪んだ楽音は
出力増幅回路を通過後、出力される。この装置の制御部
は図２に示されたようにエフェクトオンオフスイッチと
二つのつまみＡ、Ｂを必要とする。つまみＡは前置増幅
回路の増幅度を調整するためのもので、増幅度をあげる
ことに比例して歪率が増す。強い歪率に設定した場合、
出力される楽音の音量が大きくなるため、つまみＢで出
力増幅回路の増幅度を調整し、もとの楽音の音量とのバ
ランスをとる。A conventional distortion adding device has a structure as shown in FIG. 1, and a musical tone is first amplified by a preamplifier circuit and enters a vacuum tube low frequency amplifying circuit, where the distorted musical tone is output. It is output after passing through the amplifier circuit. The control section of this device requires an effect on / off switch and two knobs A and B as shown in FIG. The knob A is for adjusting the amplification factor of the preamplifier circuit, and the distortion factor increases in proportion to the increase of the amplification factor. When set to a strong distortion,
Since the volume of the musical tone to be output becomes large, the amplification degree of the output amplifier circuit is adjusted with knob B to balance the volume of the original musical tone.
【０００４】このため従来の方式では、使用者は希望す
る楽音を得るために二つのつまみＡ、Ｂを操作しなけれ
ばならず、従って演奏途中に歪率を変更し、音色を変化
させるような使用法は困難であり、事実上不可能であっ
た。第２に、真空管はプレート電圧に８０〜３００Ｖの
高電圧を使用することが一般的であるが、この高電圧を
使用した場合、真空管で歪を得るには数十ボルト以上の
入力電圧が必要になり、歪を発生させる真空管の前にも
真空管を用いた増幅回路を設けなければならなくなる。
またプレートにかける高電圧を得るために、特別の整流
回路が必要になりこれはコストを押し上げることになる
し、高電圧を扱う者は専門的知識を有していなければ非
常に危険である、など幾つかの問題があった。Therefore, in the conventional method, the user has to operate the two knobs A and B in order to obtain a desired musical tone, and therefore, the distortion rate is changed during the performance to change the timbre. Usage was difficult and virtually impossible. Secondly, a vacuum tube generally uses a high plate voltage of 80 to 300 V. When this high voltage is used, an input voltage of several tens of volts or more is required to obtain distortion in the vacuum tube. Therefore, it becomes necessary to provide an amplifier circuit using a vacuum tube before the vacuum tube that generates distortion.
It also requires a special rectifier circuit to get the high voltage applied to the plate, which adds to the cost and is very dangerous for those who handle the high voltage if they do not have the expertise. There were some problems.
【０００５】[0005]
【発明が解決しようとする課題】本発明は前記の点に鑑
みなされたもので、その課題とするところは高電圧を使
用することなく歪を発生させることができるようにする
とともに、入力された楽音の変化、希望する歪率の変化
に即時対応が可能であるようにすることである。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and its object is to enable distortion to be generated without using a high voltage and to input the distortion. The goal is to be able to immediately respond to changes in the tone and desired changes in distortion.
【０００６】また本発明は、真空管を用いた歪付加装置
をＣＰＵを搭載したデジタル回路で制御できるように
し、それにより通常の電子楽器に用いられている電圧で
十分な歪を得るとともに、外部機器からの制御を可能に
することをも目的としている。Further, the present invention enables a distortion adding device using a vacuum tube to be controlled by a digital circuit equipped with a CPU, whereby sufficient distortion can be obtained at a voltage used in a normal electronic musical instrument and an external device can be used. It is also intended to enable control from.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するため
本発明は、真空管増幅回路により楽音を故意に歪ませた
音色を発生する電子楽器について、真空管増幅回路に加
える楽音のレベルを増減することにより歪率を制御する
第１のＶＣＡ（Ｖｏｌｔａｇｅ Ｃｏｎｔｒｏｌｌｅｄ
Ａｍｐｌｉｆｉｅｒ）・ＩＣと、装置出力端から出力
される楽音のレベルを制御する第２のＶＣＡ・ＩＣと
を、夫々前記真空管増幅回路の前段と後段に配置し、第
１、第２ＶＣＡ・ＩＣによる増幅率を決定する直流電圧
を増減するためのＣＰＵをＤ／Ａ変換器を介して各ＶＣ
Ａ・ＩＣに接続するという手段を講じたものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is to increase or decrease the level of a musical tone applied to a vacuum tube amplifying circuit for an electronic musical instrument which produces a tone color in which a musical tone is intentionally distorted by a vacuum tube amplifying circuit. The first VCA (Voltage Controlled) for controlling the distortion rate by
Amplifier) .IC and a second VCA.IC for controlling the level of the musical sound output from the output end of the apparatus are arranged at the front stage and the rear stage of the vacuum tube amplifier circuit, respectively, and amplification by the first and second VCA ICs is performed. CPU for increasing / decreasing the DC voltage that determines the rate is connected to each VC via the D / A converter.
This means that it is connected to the A / IC.
【０００８】[0008]
【実施例】以下図面を参照して説明する。図３に、本発
明に係る真空管を用いた電子楽器の歪付加装置の１例が
示されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings. FIG. 3 shows an example of a distortion adding device for an electronic musical instrument using a vacuum tube according to the present invention.
【０００９】楽音の入力端１０と歪付加装置２０の出力
端３０との間に真空管低周波増幅回路４０が位置してい
る。この増幅回路４０に加える楽音のレベルを増減する
ことによって歪率を制御する第１の電圧制御増幅器即ち
ＶＣＡ・ＩＣ４１が前記増幅回路４０の前段に配置さ
れ、装置出力端３０から出力されるべき楽音のレベルを
制御する第２のＶＣＡ・ＩＣ４２が同増幅回路４０の後
段に配置されている。A vacuum tube low frequency amplifier circuit 40 is located between the musical sound input terminal 10 and the output terminal 30 of the distortion adding device 20. A first voltage control amplifier, that is, a VCA / IC 41, which controls the distortion rate by increasing or decreasing the level of the musical tone applied to the amplifying circuit 40, is arranged in the preceding stage of the amplifying circuit 40, and the musical tone to be output from the device output terminal 30. The second VCA / IC 42 for controlling the level of is provided in the subsequent stage of the amplifier circuit 40.
【００１０】前記増幅回路４０は、適正以上の大きな信
号が入力された場合にその信号を歪ませる目的で真空管
を用いており、その回路の具体的な構成自体は特別のも
のでなくて良い。つまり、図１に示された真空管低周波
増幅回路と同様の回路構成を有するもので良い。そして
真空管のプレートにかける直流電圧に＋１２Ｖを使用す
る。これは前段、後段に配置したＩＣ回路４１、４２と
共通の電源電圧であり、ＩＣの出力で十分な歪を得るこ
とができる。The amplifying circuit 40 uses a vacuum tube for the purpose of distorting a signal larger than the proper value, and the specific configuration of the circuit itself need not be special. That is, it may have a circuit configuration similar to that of the vacuum tube low frequency amplifier circuit shown in FIG. And + 12V is used for the DC voltage applied to the plate of the vacuum tube. This is a power supply voltage common to the IC circuits 41 and 42 arranged in the front and rear stages, and it is possible to obtain sufficient distortion in the output of the IC.
【００１１】真空管低周波増幅回路４０により歪んだ楽
音は第２のＶＣＡ・ＩＣ４２により、出力される楽音の
増幅度が調整され、もとの楽音と音量のバランスがとら
れるが、本発明では上記歪付加装置２０の制御をＣＰＵ
（Ｃｅｎｔｒａｌ Ｐｒｏ−ｃｅｓｓｉｎｇ Ｕｎｉ
ｔ）を搭載したデジタル回路で制御する。即ち第１、第
２のＶＣＡ・ＩＣ４１、４２の増幅率を決定する直流電
圧の増減を、ＣＰＵ５１がＤ／Ａ変換器５２に書き込ん
だデジタル値に比例させるように、ＣＰＵ５１をＤ／Ａ
変換器５２を介して各ＶＣＡ・ＩＣに接続している。For the musical sound distorted by the vacuum tube low frequency amplifier circuit 40, the amplification degree of the musical sound to be output is adjusted by the second VCA / IC 42 so that the original musical sound and the volume are balanced. CPU for controlling the distortion adding device 20
(Central Pro-processing Uni
It is controlled by a digital circuit equipped with t). That is, the CPU 51 controls the D / A so that the increase / decrease of the DC voltage that determines the amplification factors of the first and second VCA / ICs 41 and 42 is proportional to the digital value written in the D / A converter 52 by the CPU 51.
It is connected to each VCA IC through a converter 52.
【００１２】ＣＰＵ５１に内蔵のＲＯＭ、又はＣＰＵ５
１に接続されたＲＯＭ若しくはＲＡＭに、第１、第２の
ＶＣＡ・ＩＣ４１、４２にかける直流電圧をメモリして
おくことができ、これにより歪率を変化させても希望の
出力レベルを維持することができる。またＣＰＵ５１に
は、歪率を設定する手段としてディスプレイ６１とコン
トロールスイッチ６２が接続されている。７１はＭＩＤ
Ｉ等を使用してＣＰＵ５１に接続した外部機器であり、
これも歪率を制御することができる。またＣＰＵ５１に
はモジュレーションホイール７２、プレッシャセンサ７
３が同様に接続され、歪率を制御し希望の音色が得られ
るように構成されている。このように構成された歪付加
装置では、増幅回路４０に入力する楽音を十分小さいレ
ベルにすることにより、歪の殆どない楽音が得られるた
め、歪キャンセル回路を省略することができる。ROM built in the CPU 51 or the CPU 5
The DC voltage applied to the first and second VCA ICs 41 and 42 can be stored in the ROM or RAM connected to 1 so that the desired output level is maintained even if the distortion rate is changed. be able to. A display 61 and a control switch 62 are connected to the CPU 51 as means for setting the distortion rate. 71 is MID
An external device connected to the CPU 51 using I or the like,
This can also control the distortion rate. The CPU 51 has a modulation wheel 72 and a pressure sensor 7
3 are similarly connected and are configured so that the distortion rate is controlled and a desired tone color is obtained. In the distortion adding device configured as described above, since the musical tone input to the amplifier circuit 40 is set to a sufficiently low level, a musical tone having almost no distortion can be obtained, and thus the distortion canceling circuit can be omitted.
【００１３】予め、モジュレーションホイール７２の機
能を歪率の制御用に設定しておくことにより、演奏途中
での同ホイール７２の操作で自由に楽音の音色を変更す
ることができる。また外部機器のモジュレーシュンホイ
ールの操作によっても音色を変更することができ、ＭＩ
ＤＩ機能、モジュレーシュンホイール、プレッシャセン
サを備えたハモンドオルガン（登録商標）に本発明に係
る装置を組み合わせることで右手で鍵盤演奏しながら左
手でモジュレーシュンホイールを操作し音色を変化させ
ることができる。この場合モジュレーションホイールの
操作により、歪が徐々に強まる音色となり、鍵盤にプレ
ッシャセンサを装備することで、押鍵強さに対応した歪
の強さの音色が得られる。さらにプリセットと呼ばれ
る、オルガンの内部設定を記憶するスイッチに歪率を記
憶させておいても、選んだプリセットに記憶されている
歪率の音色を瞬時に得ることができる。By presetting the function of the modulation wheel 72 for controlling the distortion rate, the tone color of the musical tone can be freely changed by operating the wheel 72 during the performance. You can also change the timbre by operating the modular wheel of an external device.
By combining the device according to the present invention with a Hammond Organ (registered trademark) having a DI function, a modular wheel, and a pressure sensor, it is possible to change the timbre by operating the modular wheel with the left hand while playing the keyboard with the right hand. it can. In this case, by operating the modulation wheel, the tone becomes such that the distortion gradually increases, and by equipping the keyboard with a pressure sensor, the tone with the distortion strength corresponding to the key pressing strength can be obtained. Furthermore, even if the distortion, which is called a preset, is stored in the switch that stores the internal settings of the organ, the tone with the distortion stored in the selected preset can be obtained instantly.
【００１４】[0014]
【発明の効果】本発明は以上の如く構成されかつ作用す
るものであるから、高電圧を使用しなくても、デジタル
制御により歪ませた音色を発生させることができ、しか
も入力された楽音の変化や、希望する歪率の変化に即時
対応した演奏を可能にする効果を奏する。Since the present invention is constructed and operates as described above, it is possible to generate a distorted timbre by digital control without using a high voltage, and to generate an input musical tone. This has the effect of enabling a performance that immediately responds to changes and desired changes in distortion.
【００１５】また本発明は通常の電子楽器に用いられて
いる電圧で十分な歪を得ることができるので、真空管に
関する特別の知識を有しない者でも安全に修理等を行な
うことができ、かつまた外部機器による制御も可能にな
り、しかも従来のようにエフェクトオンオフスイッチも
不要になる等高い実用性を発揮する。Further, according to the present invention, since sufficient distortion can be obtained with a voltage used in a usual electronic musical instrument, even a person who does not have any special knowledge about vacuum tubes can safely perform repairs and the like, and also It can be controlled by an external device, and it is highly practical because it does not require an effect on / off switch as in the past.
【図１】従来の歪付加装置のブロック図。FIG. 1 is a block diagram of a conventional distortion adding device.
【図２】同装置の制御部の説明図。FIG. 2 is an explanatory diagram of a control unit of the device.
【図３】本発明に係る真空管を用いた電子楽器の歪付加
装置の実施例を示すブロック図。FIG. 3 is a block diagram showing an embodiment of a distortion adding device for an electronic musical instrument using a vacuum tube according to the present invention.
Claims (2)
せた音色を発生する電子楽器であって、真空管増幅回路
に加える楽音のレベルを増減することにより歪率を制御
する第１のＶＣＡ・ＩＣと、装置出力端から出力される
楽音のレベルを制御する第２のＶＣＡ・ＩＣとを、夫々
前記真空管増幅回路の前段と後段に配置し、第１、第２
ＶＣＡ・ＩＣによる増幅率を決定する直流電圧を増減す
るためのＣＰＵをＤ／Ａ変換器を介して各ＶＣＡ・ＩＣ
に接続したことを特徴とする真空管を用いた電子楽器の
歪付加装置。1. A first VCA / IC which is an electronic musical instrument for generating a tone color in which a musical tone is intentionally distorted by a vacuum tube amplifying circuit, wherein the distortion rate is controlled by increasing or decreasing the level of the musical tone applied to the vacuum tube amplifying circuit. And a second VCA / IC for controlling the level of the musical sound output from the output end of the device, are arranged at the front stage and the rear stage of the vacuum tube amplifier circuit, respectively.
The CPU for increasing / decreasing the DC voltage that determines the amplification factor of the VCA / IC is connected to each VCA / IC via the D / A converter.
Distortion adding device for an electronic musical instrument using a vacuum tube characterized by being connected to.
電圧として、前記回路の前段と後段に配置される第１、
第２ＶＣＡ・ＩＣと共通の電源電圧を使用した請求項第
１項記載の真空管を用いた電子楽器の歪付加装置。2. A direct current voltage applied to a plate of a vacuum tube amplifier circuit, which is arranged at a front stage and a rear stage of the circuit,
The distortion adding device for an electronic musical instrument using a vacuum tube according to claim 1, wherein a power supply voltage common to the second VCA IC is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5019667A JPH0715632B2 (en) | 1993-01-12 | 1993-01-12 | Distortion adding device for electronic musical instruments using a vacuum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5019667A JPH0715632B2 (en) | 1993-01-12 | 1993-01-12 | Distortion adding device for electronic musical instruments using a vacuum tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06208378A JPH06208378A (en) | 1994-07-26 |
| JPH0715632B2 true JPH0715632B2 (en) | 1995-02-22 |
Family
ID=12005598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5019667A Expired - Fee Related JPH0715632B2 (en) | 1993-01-12 | 1993-01-12 | Distortion adding device for electronic musical instruments using a vacuum tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715632B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225288B (en) | 2012-10-22 | 2019-01-29 | 株式会社东芝 | The manufacturing method of cold head |
| JP6016650B2 (en) * | 2013-01-23 | 2016-10-26 | 株式会社コルグ | Effect adding device |
-
1993
- 1993-01-12 JP JP5019667A patent/JPH0715632B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06208378A (en) | 1994-07-26 |
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