CH587531A5 - Optoelectronic loudness control of electronic organ - has key depressing spring with wedge opening for light beam barrier - Google Patents
Optoelectronic loudness control of electronic organ - has key depressing spring with wedge opening for light beam barrierInfo
- Publication number
- CH587531A5 CH587531A5 CH926675A CH926675A CH587531A5 CH 587531 A5 CH587531 A5 CH 587531A5 CH 926675 A CH926675 A CH 926675A CH 926675 A CH926675 A CH 926675A CH 587531 A5 CH587531 A5 CH 587531A5
- Authority
- CH
- Switzerland
- Prior art keywords
- sound
- key
- light
- light beam
- spring
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
- G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
- G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
- G10H1/055—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements
- G10H1/0553—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements using optical or light-responsive means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
An electronic organ or piano can be controlled by an optoelectronic sound triggering device in its loudness in such a way that even very fast tone sequences can be played at a loudness varying from 'piano' to 'forte'. A key T is held initially with its angle W pressed against a stop A by a lead spring G. In that position, no light can pass from the light transmitter S to the photocell E. Further depression of the key T deflects the lead spring F and a wedge opening in the diaphragm B passes a gradually increasing light flux so that the loudness is increased accordingly.
Description
Die Erfindung betrifft die optoelektronische Tonauslöseeinrichtung eines elektronischen Musikinstrumentes, insbesondere einer Orgel oder eines Klaviers. Sie ermöglicht Pianofortespiel.
Seit langem sind Tonauslöseeinrichtungen bekannt, die den Ton mittels mechanischer Kontakte einschalten. Mit geeigneter elektronischer Schaltung wurde auch erreicht, dass durch schnelleres oder langsameres Betätigen der Taste und damit des Kontaktes ein lauterer oder leiserer Ton erzeugt wurde (Pianofortespiel). Diese geschwindigkeitsabhängige Steuerung hat den Nachteil, dass es schwierig oder sogar unmöglich ist, schnelle Tonfolgen leise zu spielen.
Ferner sind Tonauslöseeinrichtungen bekannt, die zur Einschaltung des Tones einen Lichtstrahl freigeben, der dann auf einen Lichtfühler fällt, welcher den Ton auslöst. Dieses optoelektronische System, das Kontaktstörungen ausschliesst, erlaubt aber gewöhnlich kein Pianofortespiel.
Die Erfindung ermöglicht kraftabhängiges Pianofortespiel ohne Betätigung eines mechanischen Kontaktes zur Tonauslösung. Der Toneinsatz beim Drücken der Taste ist spürbar, indem die Gegenkraft beim Einsatz des Tones oder kurz vorher grösser wird.
Erfindungsgemäss wird dies dadurch erreicht, dass jeder Taste eine Blende mit keilförmiger Öffnung zugeordnet ist, die in Abhängigkeit der auf die Taste einwirkenden Kraft einen Lichtstrahl mehr oder weniger durchlässt.
Im folgenden wird anhand der beigelegten Zeichnung ein Ausführungsbeispiel der Erfindung näher beschrieben.
Ein an der Taste T befestigter Winkel W drückt in der Ruhelage durch Vorspannung einer Gelenkfeder G leicht gegen einen Anschlag A. Beim Niederdrücken der Taste erreicht diese etwa auf halbem Wege eine Feder F, welche vorn eine Blende B trägt. Die Feder wird so eingestellt, dass die Spitze einer keilförmigen Blendenöffnung in der Ruhelage den von einem Lichtsender S ausgesendeten Lichtstrahl L, der auf einen Lichtempfänger E fallen möchte, gerade nicht mehr berührt, so dass der Empfänger kein Licht erhält. Sender und Empfänger sind der Übersichtlichkeit halber auseinandergerückt gezeichnet. Drückt man nun die Taste weiter nach unten, so wird die Gegenkraft der Feder F spürbar, und diese bewegt sich mit der Taste abwärts.
Je weiter man die Feder F nach unten drückt, desto mehr Licht kann infolge der Keilform der Blendenöffnung auf den Empfänger fallen, und desto grösser wird dessen Ausgangssignal. Dieses wird zur Steuerung der Tonstärke benützt.
PATENTANSPRUCH
Optoelektronische Tonauslöseeinrichtung für ein elektronisches Musikinstrument, insbesondere eine Orgel oder ein Klavier, mit einer Tastatur für eine kraftabhängige Steuerung der Tonstärke, dadurch gekennzeichnet, dass jeder Taste (T) eine Blende (B) mit keilförmiger Öffnung zugeordnet ist, welche einen Lichtstrahl (L) in Abhängigkeit der auf die Taste einwirkenden Kraft mehr oder weniger durchlässt.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
The invention relates to the optoelectronic sound release device of an electronic musical instrument, in particular an organ or a piano. It enables pianoforte playing.
Sound release devices have been known for a long time which switch on the sound by means of mechanical contacts. With a suitable electronic circuit it was also achieved that a louder or quieter sound was generated by pressing the button faster or slower and thus the contact (piano forte playing). This speed-dependent control has the disadvantage that it is difficult or even impossible to play fast tone sequences quietly.
Furthermore, sound release devices are known which release a light beam to switch on the sound, which then falls on a light sensor which triggers the sound. This optoelectronic system, which excludes contact disturbances, usually does not allow piano to be played.
The invention enables force-dependent pianoforte playing without actuating a mechanical contact to trigger the sound. The start of the sound when the button is pressed can be felt as the counterforce increases when the sound is started or shortly before.
According to the invention, this is achieved in that each key is assigned a screen with a wedge-shaped opening which, depending on the force acting on the key, allows a light beam to pass through more or less.
In the following, an embodiment of the invention is described in more detail with reference to the accompanying drawing.
An angle W attached to the key T presses slightly against a stop A in the rest position by pretensioning a hinge spring G. When the key is depressed, it reaches a spring F, which carries a panel B at the front, approximately halfway. The spring is set so that the tip of a wedge-shaped aperture in the rest position just no longer touches the light beam L emitted by a light transmitter S, which would like to fall on a light receiver E, so that the receiver receives no light. The transmitter and receiver are drawn apart for the sake of clarity. If you now press the button further down, the counterforce of the spring F can be felt, and this moves downwards with the button.
The further you push the spring F down, the more light can fall on the receiver due to the wedge shape of the aperture, and the larger its output signal becomes. This is used to control the tone strength.
PATENT CLAIM
Optoelectronic sound release device for an electronic musical instrument, in particular an organ or a piano, with a keyboard for force-dependent control of the tone strength, characterized in that each key (T) is assigned a panel (B) with a wedge-shaped opening which emits a light beam (L) depending on the force acting on the button more or less lets through.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH926675A CH587531A5 (en) | 1975-07-14 | 1975-07-14 | Optoelectronic loudness control of electronic organ - has key depressing spring with wedge opening for light beam barrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH926675A CH587531A5 (en) | 1975-07-14 | 1975-07-14 | Optoelectronic loudness control of electronic organ - has key depressing spring with wedge opening for light beam barrier |
Publications (1)
Publication Number | Publication Date |
---|---|
CH587531A5 true CH587531A5 (en) | 1977-05-13 |
Family
ID=4350124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH926675A CH587531A5 (en) | 1975-07-14 | 1975-07-14 | Optoelectronic loudness control of electronic organ - has key depressing spring with wedge opening for light beam barrier |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH587531A5 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10233184B4 (en) * | 2001-07-31 | 2007-03-22 | Yamaha Corp., Hamamatsu | Easy to install optical position transducer and keyboard musical instrument, which uses this |
-
1975
- 1975-07-14 CH CH926675A patent/CH587531A5/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10233184B4 (en) * | 2001-07-31 | 2007-03-22 | Yamaha Corp., Hamamatsu | Easy to install optical position transducer and keyboard musical instrument, which uses this |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |