Edge-Blown Aerophone Transducer for Silent Practice and Amplification
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Solution Overview
Problem
Edge-blown aerophones, such as flutes, lack the ability to practice silently or amplify sound effectively, and do not have octave or register keys to access higher harmonics, limiting the player's range and convenience.
Innovation Solution
A transducer apparatus with sensors and electronics mounted on the flute, including a microphone and speaker, that detects air pressure and direction to generate an excitation signal, allowing for silent practice and amplification, and uses signal processing to identify played notes and output synthesized sound, enabling wireless communication with computers or smartphones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a microphone and speaker are mounted on the flute to detect and amplify sound, then sound amplification is achieved, but the instrument becomes noisier and cannot be used for silent practice
Solution Approach 1:
The patent replaces the natural acoustic vibration system of the flute with electronic sensors and a transducer. Instead of relying on acoustic amplification through a speaker, the system uses electronic detection of air pressure and direction by sensors, processes the signals, and generates synthesized musical notes electronically, thereby eliminating the need for a loud speaker and enabling silent practice mode
Solution Approach 2:
The patent introduces sensors as intermediaries between the player's breath and the sound output system. These sensors detect air pressure and direction, converting physical breath parameters into electronic signals that can be processed and converted into synthesized musical notes, serving as a mediator that enables both silent and amplified practice modes
2Adaptability or versatility
If sensors and electronic processing are added to detect breath and generate synthesized notes, then silent practice is enabled, but device complexity increases
Solution Approach 1:
The patent designs the transducer apparatus to perform multiple functions: it detects air pressure, detects air direction, generates excitation signals, synthesizes musical notes, and provides both silent and amplified output modes. This multi-functionality reduces the need for separate devices and justifies the electronic complexity by consolidating multiple capabilities into a single integrated apparatus
Solution Approach 2:
The system uses the player's own breath as the input signal source, eliminating the need for external controllers or additional input devices. The sensors detect the natural breath parameters, and the electronic processing automatically generates the corresponding synthesized notes, making the system self-sufficient and reducing the complexity of external control mechanisms
3Device complexity
If the flute lacks octave or register keys, then the instrument structure remains simple, but the player cannot access higher harmonics and the note range is limited
Solution Approach 1:
The patent replaces the mechanical octave or register key system with an electronic synthesis system. Instead of using physical keys to open or close holes for accessing higher harmonics, the system uses sensors to detect breath parameters and electronically synthesizes the corresponding higher harmonics, thereby expanding the note range without adding mechanical complexity
Solution Approach 2:
The system changes the operational parameters from mechanical hole opening/closing to electronic signal processing. By detecting breath pressure and direction parameters and converting them into synthesized notes with varying frequencies, the system can access higher harmonics through parameter transformation rather than mechanical modification, expanding the playable range while maintaining structural simplicity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quiet practice without disturbing others, provides real-time feedback, and allows for amplification of sound, expanding the player's range by simulating higher harmonics and providing aural feedback through synthesized notes.
Implementation Method 1
A transducer apparatus with sensors and electronics mounted on the flute, including a microphone and speaker, that detects air pressure and direction to generate an excitation signal
Implementation Method 2
A transducer apparatus with sensors and electronics mounted on the flute, including a microphone and speaker, that detects air pressure and direction
Data Source
Figure 1
Figure 2a~2b
Figure 3~4
AI summary
With reference to Figure 2b, the present invention provides transducer apparatus (20) for an edge-blown aerophone(10), the edge-blown aerophone (10) having an aerophone embouchure hole (13). An aerophone speaker (22) delivers sound to a resonant chamber (28)of the aerophone (10) via the aerophone embouchure hole (13). An aerophone microphone (23) receives via the aerophone embouchure hole (13) sound in the resonant chamber (28).A housing (21) provides a lip plate (27)with a housing embouchure hole(29)independent and separate from the aerophone embouchure hole(13). Breath sensors(24,25,26) sense breath applied across the housing embouchure hole(29). An electronic processor (41) receives signals from the microphone (23) and the breath sensors (24, 25,26) and is connected to the speaker (23). The breath sensors (24, 25,26) provide signals indicative of breath strength. The electronic processor (41) generates an excitation signal which is delivered as an acoustic excitation signal to the resonant chamber (28) by the aerophone speaker. The electronic processor (41) uses the signals it receives to determine a desired musical note which a player of the aerophone wishes to play. The electronic processor (41) synthesizes the desired musical note and outputs the synthesized note to one of more of headphones (43), a speaker (44) external to the transducer apparatus (20), computer apparatus (45) and/or a smartphone, whereby the musical note is played audibly and/or displayed visually to the player.