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DE653808C - Electric musical instrument with shock excitation of reverb formants - Google Patents

Electric musical instrument with shock excitation of reverb formants

Info

Publication number
DE653808C
DE653808C DET46259D DET0046259D DE653808C DE 653808 C DE653808 C DE 653808C DE T46259 D DET46259 D DE T46259D DE T0046259 D DET0046259 D DE T0046259D DE 653808 C DE653808 C DE 653808C
Authority
DE
Germany
Prior art keywords
reverb
fundamental
formants
formant
musical instrument
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
Application number
DET46259D
Other languages
German (de)
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.)
FRIEDRICH TRAUTWEIN DR ING
Original Assignee
FRIEDRICH TRAUTWEIN DR ING
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 FRIEDRICH TRAUTWEIN DR ING filed Critical FRIEDRICH TRAUTWEIN DR ING
Priority to DET46259D priority Critical patent/DE653808C/en
Application granted granted Critical
Publication of DE653808C publication Critical patent/DE653808C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10HELECTROPHONIC 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
    • G10H1/00Details of electrophonic musical instruments
    • G10H1/02Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)

Description

Elektrisches Musikinstrument mit Stoßerregung von Hallformanten Bei elektrischen Musikinstrumenten, bei. welchen die Klangerzeugung durch Stoßerregung von Hallformanten vorgenommen wird, treten mitunter störende Erscheinungen auf, welche in Anlehnung an physikalisch verwandte Erscheinungen bei Geigen und anderen Musikinstrumenten als Wölfe bezeichnet werden. Solche Wölfe treten dann auf, wenn der Grundton und der Hallformant harmonisch sind. Dabei ist häufig eine unangenehme. Lautstärkeerhöhung und Verzerrung oder Veränderung der Klangfarbe wahrzunehmen. Auch kann es vorkommen, daß infolge überstarker Amplitudenzunahme des Hallformanten der Grundton nicht mehr genügend hervortritt.Electric musical instrument with shock excitation of reverb formants electric musical instruments. which the sound generation by shock excitation is made by reverb formants, sometimes disturbing phenomena occur, which based on physically related phenomena in violins and others Musical instruments are referred to as wolves. Such wolves appear when the fundamental and the reverb formant are harmonious. This is often an uncomfortable one. Perceive volume increase and distortion or change in timbre. It can also happen that as a result of an excessive increase in the amplitude of the Hall formant the keynote no longer emerges sufficiently.

Erfindungsgemäß werden die Wölfe bei mit .einstellbaren Formantkreisen arbeitenden elektrischen Musikinstrumenten, bei denen bestimmte, für den Klangcharakter maßgebende, den Hallformanten b:Idende Frequenzen in ihrer Amplitude entsprechend der Frequenz des Grundtones rhythmisch verändert werden, dadurch beseitigt, daß mit jeder Änderung des Grundtones die Frequenz des Hallformanten selbsttätig, vorzugsweise in gleichem Sinn wie der Grundton, geändert wird. Es entspricht einer guten Klangwirkung, wenn diese Veränderung in gleicher Richtung wie der Grundton verläuft, so daß sich beispielsweise bei einer Erhöhung dies Grundtones um .eine Oktave der Hallformant um eine Terz geändert hat. Erreicht wird dies beispielsweise@e dadurch, daß die eisenhaltige Selbstinduktionsspule des Hallformanten mit einer Hilfswicklung versehen ist, welche von einem Gleichstrom durehflossen wird, dessen Stärke mit der Höhe des Grundtones zunimmt.According to the invention, the wolves with adjustable formant circles working electrical musical instruments, in which certain, for the sound character decisive, the Hall formants b: Idende frequencies in their amplitude accordingly the frequency of the fundamental tone can be changed rhythmically, thereby eliminated that the frequency of the reverb formant automatically, preferably, with every change in the fundamental tone in the same sense as the keynote is changed. It corresponds to a good sound effect, if this change is in the same direction as the root, so that for example if this fundamental tone is increased by one octave of the reverb formant changed by a third. This is achieved, for example, @ e in that the Ferrous self-induction coil of the Hall formant provided with an auxiliary winding is, which is traversed by a direct current, the strength of which with the height of the keynote increases.

Bei .elektrischen Musikinstrumenten treten mitunter auch störende Hallformanten auf, indem an irgendeiner Stelle vom Schwingungserzeuger bis zum Lautsprecher eigenschwingungsfähige Gebilde vorhanden sind, die ganz ähnlich wie die zur Klangfärbung bestimmten Hallformanten wirken -und daher das Klangbild ungewollt färben. Insbesondere wirken in dieser Weise Transformatoren, die häufig Eigenkapazität besitzen oder .aus schalttechnischen Gründen mit Kapazitäten kombiniert werden. Man wird daher einen Verstärker für elektrische Musik, ,abgesehen von den in der Verstärkertechnik allgemein bekannten Grundsätzen, insbesondere so dimensionieren, daß er keine eigenschwingungsfähigen Gebilde enthält,-.alsö z. B. nur Widerstände und nötigenfalls Kondensatoren als Schaltelemente verwenden.In the case of electrical musical instruments, there are sometimes also disturbing ones Hall formants on by at some point from the vibration generator to the loudspeaker There are self-oscillating structures that are very similar to those used to color the sound certain reverb formants have an effect - and therefore unintentionally color the sound image. In particular This is the effect of transformers that often have their own capacitance or .be combined with capacitors for technical reasons. One will therefore an amplifier for electrical music, apart from those used in amplifier technology generally known principles, in particular dimensioning so that it does not have any inherent oscillation Structure contains, -. Alsö z. B. only resistors and, if necessary, capacitors as Use switching elements.

Claims (3)

PATENTANSPRÜCHE: t. Verfahren zur Beseitigung von Wölfen bei mit .einstellbaren Formantkreisen arbeitenden elektrischen Musikinstrumenten, bei denen bestimmte, für den Klangcharakter maßgebende, den Hallformanten bildende Frequenzen in ihrer Amplitude @entsprechend der Frequenz des Grundtones rhythmisch verändert werden, dadurch gekennzeichnet, daß mit jeder Änderung des Grundtones d:e Frequenz des Hallformn teti selbsttätig, vorzugsweise in. gleichem Sinne .wie der Grundton, geändert ivA:= PATENT CLAIMS: t. Procedure for eliminating wolves with .adjustable Formant circles working electrical musical instruments, in which certain, decisive for the sound character, forming the reverb formant Frequencies Rhythmically changed in their amplitude @ according to the frequency of the fundamental tone are characterized in that with each change in the fundamental tone d: e frequency of the Hallformn teti automatically, preferably in the same sense as the fundamental changed ivA: = 2. Verfahren, nach Anspruch i, dadurch gekennzeichnet, daß die Änderung der Hallformanten in engeren Intervallen vorgenommen wird als die des Grundtones. 2. The method according to claim i, characterized in that the change the reverberation formants is made in closer intervals than that of the fundamental. 3. Einrichtung zur Ausübung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß durch eine eisenhaltige .Selbstinduktionsspule des Formantkreises ein Gleichstrom geleitet wird, dessen Stärke sich mit der - Höhe des Grundtones ändert.3. Device for performing the method according to claim i, characterized in that that through a ferrous .Selfinduktionsspule the formant circle a direct current whose strength changes with the - height of the fundamental.
DET46259D 1931-03-05 1931-03-05 Electric musical instrument with shock excitation of reverb formants Expired DE653808C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET46259D DE653808C (en) 1931-03-05 1931-03-05 Electric musical instrument with shock excitation of reverb formants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET46259D DE653808C (en) 1931-03-05 1931-03-05 Electric musical instrument with shock excitation of reverb formants

Publications (1)

Publication Number Publication Date
DE653808C true DE653808C (en) 1937-12-03

Family

ID=7562270

Family Applications (1)

Application Number Title Priority Date Filing Date
DET46259D Expired DE653808C (en) 1931-03-05 1931-03-05 Electric musical instrument with shock excitation of reverb formants

Country Status (1)

Country Link
DE (1) DE653808C (en)

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