JP2011180546A - Electronic wind instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic wind instrument by which a scale is controlled by blowing strength of breath and reed vibration, that is a characteristic of the wind instrument, and which is performed with similar feeling with actual musical instrument. <P>SOLUTION: The wind instrument includes: a vibration measuring unit 2 which measures vibration generated when a player blows a tube 11, to output a vibration signal; a flow speed measuring unit 3 which measures a flow speed of fluid that flows inside the tube 11, to output a flow speed signal. The scale is determined by a level of the measured vibration signal and a level of the flow speed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a musical instrument that measures a vibration sound of a lip or a lead and an instantaneous fluid flow velocity and outputs a scale based on the vibration / flow velocity signal, and particularly reproduces a wind performance such as a wind instrument electronically. It relates to musical instruments.

  Conventionally, this type of electronic musical instrument measures a flow rate flowing in a pipe where a person plays, determines a scale based on the flow rate and an input signal from a key operation unit, and outputs sound from an external output (for example, Patent Document 1). reference).

  In the conventional electronic wind instrument described in Patent Document 1, the scale determining unit outputs a tone scale signal from the instantaneously measured flow rate signal from the flow rate input unit and a plurality of key input signals from the key operation unit, thereby generating a sound source. The unit outputs a sound source signal from the tone color signal and scale signal of the instrument stored in advance in the instrument selection unit, and outputs a sound signal from the external output unit.

JP 2004-101790 A

  However, in an actual wind instrument, the sound of vibrating the lips and reed and the wind noise applied to the edges are resonated with the tube, and the scale and volume are controlled by this vibration sound, wind noise and the flow velocity of the wind. is doing. In the conventional configuration, the scale is determined only by the key operation unit, and there is a problem in that performance close to an actual musical instrument cannot be performed.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide an electronic wind instrument that can control a musical scale by breathing strength and vibrations of lips and reeds and that can be played at intervals close to an actual musical instrument.

  In order to solve the above-described conventional problems, an electronic wind instrument according to the present invention includes a vibration generating unit that generates a vibration sound when a player blows a tube, and a vibration signal generated by the vibration generating unit. The vibration measurement unit for output, the flow velocity measurement unit for measuring the flow velocity of the air flowing in the pipe blown by the player and outputting the flow velocity signal, the vibration signal of the vibration measurement unit and the flow velocity signal of the flow velocity measurement unit, A sound level determination unit that outputs a signal, a volume level determination unit that receives a signal of the flow velocity measurement unit and outputs a volume level signal, and a sound source signal that is in the scale from a sound source stored in advance from the signal output from the scale level determination unit A sound source generating unit that outputs the sound signal output from the sound volume determining unit and an external output unit that converts the sound source signal output from the sound source generating unit into an external output signal. Level and flow rate It is possible to determine the scale by Le.

  The electronic wind instrument of the present invention can be played with a feeling close to that of an actual musical instrument by using the mouthpiece and lip vibrations, the lead vibration, and the strength of blowing the pipe, which are the principles of wind instrument playing, as parameters.

Schematic diagram of an electronic wind instrument in Embodiment 1 of the present invention The block diagram of the electronic wind instrument in Embodiment 1 of this invention

  According to a first aspect of the present invention, there is a vibration generating unit that generates a vibration sound when a player blows a tube, a vibration measuring unit that measures a vibration sound generated by the vibration generating unit and outputs a vibration signal, and a player has blown A flow velocity measuring unit that measures a flow velocity of air flowing in the pipe and outputs a flow velocity signal; a scale determination unit that outputs a scale signal based on the vibration signal of the vibration measurement portion and the flow velocity signal of the flow velocity measurement portion; and the flow velocity A volume determination unit that receives a signal from the measurement unit and outputs a volume signal; a sound source generation unit that outputs a sound source signal in the scale from a sound source stored in advance from the signal output from the scale determination unit; and the volume determination As a musical instrument by controlling the scale and volume with vibration sound and air flow velocity by providing an external output unit that converts the volume signal output from the sound source and the sound source signal output from the sound source generation unit into an external output signal Sound or signal outside It is possible to output.

  In particular, the second invention includes a scale operation unit that inputs a scale intended by the player and outputs a scale operation signal in the first invention, and the scale determination unit measures the scale operation signal and vibration of the scale operation unit. By outputting the scale signal from the vibration signal of the unit and the flow rate signal of the flow rate measurement unit, the scale can be controlled by the vibration sound, the flow velocity of the air, and the player's scale operation input.

  According to a third aspect of the invention, in particular, in the first or second aspect of the invention, the vibration measuring unit converts the vibration sound thus obtained into a frequency, and outputs the vibration signal as a vibration frequency value, thereby converting the vibration sound as a digital signal. can do.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the flow velocity measurement unit measures the flow velocity of the fluid according to the time during which the ultrasonic wave propagates through the air in the tube. Can be converted as a digital signal.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the external output unit is a speaker that outputs an audible sound from a sound source signal and a volume signal, so that the played sound is a musical instrument on the spot. Can be played with a sense closer to that of an actual instrument.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic diagram of an electronic wind instrument according to the first embodiment of the present invention.

  In FIG. 1, the vibration generating unit 1 is configured by a mouthpiece, and a player (not shown) can vibrate lips and leads by attaching a mouth like an actual musical instrument. A high-sensitivity microphone or the like is attached to a place where the vibration sound generated by the vibration generation unit 1 can be appropriately sampled, and the vibration measurement unit 2 is configured to output the measured vibration sound as a frequency value by signal analysis.

  Further, a breath blown from the mouthpiece as the vibration generating unit 1 by the player passes through the tube 11, and the flow velocity measuring unit 3 is attached to the middle of the tube 11.

  The scale operation unit 5 is attached to the upper part of the main body and outputs to the scale determination unit 6 as a scale operation signal.

Then, a scale determination unit 6 that determines a scale based on a vibration signal from the vibration measurement unit 2, a flow rate signal from the flow rate measurement unit 3, and a scale operation signal from the scale operation unit 5, a volume determination unit 7 that determines a volume, The control board 4 is composed of a sound source generator 8 that selects a sound source from the scale signal from the scale determination unit 6 and the volume signal from the volume determination unit 7 and outputs the sound source signal.

  The flow velocity measuring unit 3 is disposed so that the ultrasonic sensors 3a and 3b are opposed to each other in an oblique direction with respect to the air flow direction in the tube 11, and during this period, the ultrasonic waves between the ultrasonic sensors 3a and 3b are transmitted. It is configured to measure the flow velocity from the propagation time.

  A sound source signal from the sound source generator 8 is converted into an external output signal, that is, a sound by a speaker (external output unit) 9 and then emitted from a bell 10.

  FIG. 2 shows a block diagram of the electronic wind instrument according to the first embodiment of the present invention.

  In FIG. 2, vibration sound A from vibration generation unit 1, vibration signal B from vibration measurement unit 2, flow rate signal C from flow velocity measurement unit 3, scale operation signal D from scale operation unit 5, scale signal E from scale determination unit 6, A volume signal F is output from the volume determination unit 7 and a sound source signal G is output from the sound source generation unit 8.

  The operation and operation of the electronic wind instrument configured as described above will be described below.

  First, the performer blows the vibration generating part 1 such as a mouthpiece for a brass instrument or a lead-type mouthpiece for a woodwind instrument used for an actual wind instrument to vibrate the lips and the lead to vibrate sound A before the resonance of the wind instrument. Is generated.

  The vibration measurement unit 2 measures the vibration sound A generated by the vibration generation unit 1 with a high sensitivity microphone or the like, and performs a fast Fourier transform with a microcomputer (not shown) to convert each frequency component into a digital signal. The vibration signal B is output.

  In the flow velocity measuring unit 3, the flow velocity of the breath passing through the tube 11 is determined from the propagation time of the ultrasonic wave between the pair of ultrasonic sensors 3 a and 3 b attached on the way of the breath blown from the player through the tube 11. Calculate and output as a flow velocity signal C.

  The scale determination unit 6 determines a scale in which the frequency and the flow velocity coincide with each other from a database storing the actual sampling result of the frequency of the vibration signal B and the flow velocity signal C in the wind instrument. If either one does not match the database, the scale is not judged and no sound is produced. The determined scale is output as a scale signal E.

  The volume determination unit 6 determines the volume of the flow velocity signal C that matches the flow velocity from the database that stores the sampling result of the actual wind instrument, and outputs it as the volume signal F.

  The sound source generator 8 outputs a signal sound in which the scale stored in advance as the sound source matches the scale signal E, adjusts the gain of the amplifier by the volume signal F, and generates the sound source signal G that matches the scale signal E and the volume signal F. Output.

  The external output unit 9 outputs the sound source signal G as an actual sound.

  In addition, the sound source generator 8 includes an output terminal (not shown) for outputting as an audio signal that can be output to headphones or the like.

In addition to the frequency and flow velocity determined by the scale determination unit 6, the scale operation unit 5 inputs a scale that the player wants to change arbitrarily with the scale operation unit 5, for example, using a push button. A scale in which the frequency, the flow velocity, and the operation input signal match is determined from the database storing the sampling results of the wind instruments, and the scale is output as the scale signal E.

  As described above, in the present embodiment, the configuration for determining the scale and volume is the vibration measurement unit 2 and the flow velocity measurement unit 3, so that a pseudo performance can be performed using the mouthpiece used for an actual wind instrument. Yes, you can increase night practice and solo variations.

  Further, by adopting a slide system for the scale operation unit 5 of the present embodiment, a wind instrument such as a trombone can be simulated, and variations of the electronic wind instrument can be increased.

  As described above, the electronic wind instrument according to the present invention can be used as a controller of a game, for example, because it can be simulated as if it is actually playing a wind instrument.

DESCRIPTION OF SYMBOLS 1 Vibration generation part 2 Vibration measurement part 3 Flow velocity measurement part 5 Scale operation part 6 Scale determination part 7 Volume determination part 8 Sound source generation part 9 Speaker (external output part)
11 tubes

Claims (5)

A vibration generating unit that generates a vibration sound when the player blows the tube, a vibration measuring unit that measures the vibration sound generated by the vibration generating unit and outputs a vibration signal, and flows into the tube that the player has blown A flow velocity measuring unit that measures the flow velocity of the air and outputs a flow velocity signal; a scale determination unit that outputs a scale signal based on the vibration signal of the vibration measurement portion and the flow velocity signal of the flow velocity measurement portion; and the signal of the flow velocity measurement portion A volume determination unit that outputs a volume signal, a sound source generation unit that outputs a sound source signal in the scale from a sound source stored in advance from the signal output from the scale determination unit, and a volume output from the volume determination unit An electronic wind instrument comprising a signal and an external output unit that converts the sound source signal output from the sound source generation unit into an external output signal. A scale operation unit that inputs a scale intended by the player and outputs a scale operation signal is provided.The scale determination unit is a scale signal based on the scale operation signal of the scale operation unit, the vibration signal of the vibration measurement unit, and the flow velocity signal of the flow velocity measurement unit. The electronic wind instrument of Claim 1 which outputs. The electronic wind instrument according to claim 1 or 2, wherein the vibration measurement unit converts the acquired vibration sound into a frequency and outputs a vibration signal as a vibration frequency value. The electronic wind instrument according to any one of claims 1 to 3, wherein the flow velocity measurement unit measures the flow velocity of the fluid based on a time during which the ultrasonic wave propagates through the air in the tube. The electronic wind instrument according to any one of claims 1 to 4, wherein the external output unit is a speaker that outputs an audible sound from a sound source signal and a volume signal.