WO2020220148A1 - Capsule détectrice pour détecter la polarisation des ondes qui se propagent dans les cordes d'instruments de musique à cordes - Google Patents

Capsule détectrice pour détecter la polarisation des ondes qui se propagent dans les cordes d'instruments de musique à cordes Download PDF

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Publication number
WO2020220148A1
WO2020220148A1 PCT/CL2020/050047 CL2020050047W WO2020220148A1 WO 2020220148 A1 WO2020220148 A1 WO 2020220148A1 CL 2020050047 W CL2020050047 W CL 2020050047W WO 2020220148 A1 WO2020220148 A1 WO 2020220148A1
Authority
WO
WIPO (PCT)
Prior art keywords
string
strings
quadrants
instrument
stringed musical
Prior art date
Application number
PCT/CL2020/050047
Other languages
English (en)
Spanish (es)
Inventor
Christian Antonio ORELLANA GÓMEZ
Alejandro René ROLDÁN MOLINA
Original Assignee
Universidad Técnica Federico Santa María
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 Universidad Técnica Federico Santa María filed Critical Universidad Técnica Federico Santa María
Publication of WO2020220148A1 publication Critical patent/WO2020220148A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • 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
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • 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
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • 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
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar

Definitions

  • the present invention relates to a detector capsule for detecting the state of polarization of the strings in musical instruments.
  • detector capsules convert the sound coming from the vibrations of the string into an electrical signal of equal frequency and proportional to the amplitude of the vibration.
  • the waves that propagate in a string are transverse, that is, the movement of this occurs in a direction perpendicular to the propagation of the wave.
  • the amplitude and frequency of the vibration can be varied, at will by the interpreter, through plucking or strumming and by placing the fingers on the eyebrows and thus producing the melodies and / or chords.
  • An objective of the invention is to have a detector capsule to detect the polarization of the waves that propagate in the strings of stringed musical instruments, comprising: For each string of the stringed musical instrument, the detector capsule is constituted by a disk piezoelectric divided into four quadrants, which supports the respective string as the bridge of the stringed musical instrument; When the string vibrates, the piezoelectric disk deforms, producing four electrical signals from from each of the quadrants, where the electrical signals from each of the opposite quadrants are subtracted by two differential amplifiers, thereby obtaining two output signals proportional to the polarization plane of the string; and for each string of the stringed musical instrument, the detector capsule is made up of a cylinder that supports the piezoelectric disk divided into four quadrant, which has a base or grinding wheel attached to its surface which acts as a bridge for the respective string; the outputs of the electrical signals coming from each of the piezoelectric quadrants are connected to the differential amplifiers near their common ground point.
  • the vibration of said string can be separated into two components, of equal frequency that differ in their amplitude according to the direction of the strum or plucking.
  • the two output signals of each string can be processed and / or distorted with the help of auxiliary equipment, and thus the intention of the dot or strum in one direction more than the other, thereby controlling the distortion of the signal. from each string without using pedals or other auxiliary devices.
  • the interpreter has control of the effects and / or distortion of the sound coming from the instrument on the strings and with this he can expand the possibilities in his musical interpretation.
  • Figure 1 illustrates a diagram of a detector capsule of the invention together with the electrical connections.
  • Figure 2 is a view of the parts of the detector capsule.
  • Figure 3 illustrates a side view of the detector capsule.
  • Figure 4 illustrates a view of the detector capsules on a string instrument.
  • Figure 5 illustrates an arrangement side view of the detector capsule arranged on a string instrument. Detailed description of a preferred embodiment
  • the present invention corresponds to a detector capsule (100) to detect the polarization of the waves that propagate in the strings (40) of stringed musical instruments in order to give effects and / or distortion to the sound from the same plucking or strumming the string (40).
  • the waves that propagate in the strings (40) are transverse waves and have the property called polarization, which corresponds to the plane through which the string (40) vibrates. This plane of polarization can be defined according to the plucking direction of the string (40). And it can be used to give distortions and / or preset effects to the sound of the string (40) from the same plucking or strumming of the string (40).
  • the detector capsule (100) is constituted by a piezoelectric disk (10) with four quadrants (20), which supports the respective string (40) as the bridge of the instrument.
  • the piezoelectric disk (10) deforms, producing four electrical signals.
  • the electrical signals coming from the opposite quadrants (20) when subtracted by two differential amplifiers (50) and (60), two output signals proportional to the plane of polarization of the string (40) are obtained.
  • the vibration of said string (40) can be separated into two components, of equal frequency that differ in their amplitude according to the direction of the strum or plucking.
  • the pair of output signals of each string (40) can be treated and / or distorted with the help of auxiliary equipment, and thus the intention of the dot or strum in one direction more than the other, with which you can control the distortion of the signal coming from each string (40) without using pedals or other auxiliary devices.
  • the interpreter has control of the effects and / or distortion of the sound coming from the instrument on the same strings (40) and with this he can expand the possibilities in his musical interpretation.
  • the detector capsule (100) is made up of a cylinder (90) that supports a piezoelectric disk (10) divided into four quadrant (20), which has a base or base attached to its surface. grinding wheel (30) which acts as a bridge of the respective chord (40).
  • the electrical outputs of the piezoelectric quadrants (20) are connected to the differential amplifiers (50) and (60) together with their common ground point (70).

Landscapes

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

Abstract

La présente invention concerne une capsule détectrice pour détecter la polarisation des ondes qui se propagent dans les cordes des instruments de musique à cordes avec pour but de conférer des effets et/ou une distorsion du son à partir du même pincement ou battement de la corde.
PCT/CL2020/050047 2019-05-02 2020-04-29 Capsule détectrice pour détecter la polarisation des ondes qui se propagent dans les cordes d'instruments de musique à cordes WO2020220148A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2019001211A CL2019001211A1 (es) 2019-05-02 2019-05-02 Una capsula detectora para detectar la polarización de las ondas que se propagan en las cuerdas de instrumentos musicales de cuerdas.
CL1211-2019 2019-05-02

Publications (1)

Publication Number Publication Date
WO2020220148A1 true WO2020220148A1 (fr) 2020-11-05

Family

ID=67106729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CL2020/050047 WO2020220148A1 (fr) 2019-05-02 2020-04-29 Capsule détectrice pour détecter la polarisation des ondes qui se propagent dans les cordes d'instruments de musique à cordes

Country Status (2)

Country Link
CL (1) CL2019001211A1 (fr)
WO (1) WO2020220148A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491051A (en) * 1980-02-22 1985-01-01 Barcus Lester M String instrument pickup system
US4944209A (en) * 1986-04-28 1990-07-31 Fishman Lawrence R Stringed instrument piezoelectric transducer
US5078041A (en) * 1990-06-04 1992-01-07 Schmued Laurence C Suspension bridge pickup for guitar
US5153363A (en) * 1989-05-15 1992-10-06 Fishman Lawrence R Stringed instrument piezoelectric transducer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491051A (en) * 1980-02-22 1985-01-01 Barcus Lester M String instrument pickup system
US4944209A (en) * 1986-04-28 1990-07-31 Fishman Lawrence R Stringed instrument piezoelectric transducer
US5153363A (en) * 1989-05-15 1992-10-06 Fishman Lawrence R Stringed instrument piezoelectric transducer
US5078041A (en) * 1990-06-04 1992-01-07 Schmued Laurence C Suspension bridge pickup for guitar

Also Published As

Publication number Publication date
CL2019001211A1 (es) 2019-06-28

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