Musical sound generation method for electronic wind instrument
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Solution Overview
Problem
Conventional electronic wind instruments lack an effective method to replicate the nuanced sound control and blowing pressure dynamics of natural instruments, relying on direct blowing pressure detection for sound volume, which fails to capture the complex interactions of lip position, tongue contact, and bite force.
Innovation Solution
A musical sound generation method and apparatus that utilize a blowing pressure sensor and processor to perform physical model calculations, providing attenuated oscillation to detected blowing pressure, generating sound based on calculated physical model blowing pressure, thereby simulating the dynamic sound control of natural instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct blowing pressure detection is used for sound volume control, then the system is simple, but it fails to capture the complex interactions of lip position, tongue contact, and bite force
Solution Approach 1:
The patent introduces a reed as an intermediary mechanical element between the player's breath and the electronic sensor system. The reed physically interacts with lip position, tongue contact, and bite force, converting these complex interactions into measurable reed vibration characteristics that can be detected by pressure sensors, thereby achieving high measurement precision without requiring direct measurement of all individual parameters
Solution Approach 2:
The patent replaces direct mechanical measurement of multiple parameters (lip position, tongue contact, bite force) with an electronic sensor system that measures blowing pressure and reed vibration. This substitution uses electronic signal processing to infer the effects of mechanical interactions, reducing device complexity while maintaining measurement accuracy
2Measurement precision
If various sensors are provided for detecting lip position, tongue contact status, and bite force, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent makes the blowing pressure sensor serve multiple functions: it detects not only the magnitude of blowing pressure but also, through analysis of pressure variations and reed vibration coupling, provides information about lip position, tongue contact status, and bite force. This multi-functionality eliminates the need for separate sensors for each parameter, reducing device complexity while maintaining measurement precision
Solution Approach 2:
The patent implements a feedback mechanism where the detected blowing pressure and reed vibration characteristics are continuously analyzed to adjust and refine the measurement of mouthpiece interaction parameters. This feedback loop allows the system to accurately determine lip position, tongue contact, and bite force by observing how these factors affect reed vibration patterns, achieving high measurement precision without additional sensors
3Reliability
If attenuated oscillation calculation is performed on blowing pressure, then sound volume control realism improves, but calculation processing time increases
Solution Approach 1:
The patent pre-calculates and stores oscillation parameters and attenuation characteristics based on reed vibration data before actual sound generation. By preparing these calculation parameters in advance, the system can apply attenuated oscillation to blowing pressure during performance with minimal real-time processing delay, maintaining calculation accuracy while reducing processing time
Solution Approach 2:
The patent applies attenuated oscillation in periodic cycles synchronized with the natural vibration frequency of the reed. This periodic application of oscillation calculations aligns with the physical reality of reed vibration, improving the realism of sound volume control while optimizing calculation efficiency by processing data in regular intervals rather than continuously
Data Source
AI summary
Calculation is performed to provide a delay and attenuated oscillation to a blowing pressure detected by a blowing pressure sensor which detects blowing pressure, and a musical sound is generated based on the blowing pressure subjected to the calculation. As a result, for example, a blowing feeling of an electronic wind instrument can be made closer to a blowing feeling of a natural musical instrument.