Three-Axis Acceleration Sensor for Accurate Musical Instrument Tuning
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Solution Overview
Problem
Conventional musical instrument tuners with single-axis vibration sensors face challenges in capturing vibrations accurately due to sensitivity issues and directionality, leading to poor usability and inaccurate tuning.
Innovation Solution
A musical instrument tuner equipped with a sensor device featuring a three-axis acceleration sensor that performs wireless communication with an operation device, allowing for stable and accurate tuning by detecting vibrations and posture information, and providing musical performance support and management functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-axis vibration sensor is used in the tuner, then the device complexity is reduced and manufacturing cost is lowered, but the measurement precision of vibrations is insufficient and tuning accuracy deteriorates
Solution Approach 1:
The patent transitions from a single-axis vibration sensor to a three-axis acceleration sensor, adding two more detection dimensions. This allows the sensor to capture vibrations in multiple directions (X, Y, Z axes) simultaneously, resolving the issue of insufficient measurement precision while maintaining reasonable device complexity
2Measurement precision
If the tuner is attached to the musical instrument in a fixed position and orientation, then the sensitivity of the vibration sensor is maximized for that specific configuration, but the adaptability to different attachment positions and player preferences is reduced
Solution Approach 1:
By implementing a three-axis acceleration sensor instead of a single-axis sensor, the system can detect vibrations from any direction. This eliminates the need for fixed attachment positions and orientations, as the sensor can accurately capture vibrations regardless of how the tuner is positioned on the instrument, thereby improving adaptability while maintaining measurement precision
Solution Approach 2:
The three-axis acceleration sensor provides universal vibration detection capability that works across multiple attachment scenarios. The sensor can function effectively whether the tuner is attached to the headstock, body, or other parts of the instrument, and regardless of the attachment orientation, making the device versatile for different players and instrument types
3Device complexity
If a single-axis vibration sensor is used, then the device simplicity is maintained, but the reliability of tuning accuracy deteriorates when vibrations occur in directions other than the sensor's sensitivity axis
Solution Approach 1:
The three-axis acceleration sensor detects vibrations along three orthogonal axes simultaneously. This ensures that regardless of the vibration direction caused by different playing techniques or instrument orientations, at least one axis will capture the vibration signal reliably, thereby improving tuning accuracy and reliability while keeping the device complexity manageable
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
The solution enhances usability and achieves stable, accurate tuning by capturing vibrations from multiple axes, while also offering musical performance support and management features.
Implementation Method 1
the sensor device includes an acceleration sensor that has at least two detection axes, frequency detection means for detecting, as a detected frequency, a frequency of a vibration of musical sound generated through an operation of the musical instrument based on an output from the acceleration sensor
Data Source
AI summary
The musical instrument tuner includes: a sensor device that is attached to a musical instrument; and an operation device that is able to perform wireless communication mutually with the sensor device, in which the sensor device includes an acceleration sensor that has at least two detection axes, frequency detection means for detecting, as a detected frequency, a frequency of a vibration of musical sound generated through an operation of the musical instrument based on an output from the acceleration sensor, and sensor-side communication means for transmitting transmission information including information regarding the detected frequency to the operation device, and the operation device includes operation-side communication means for receiving the transmission information transmitted from the sensor device, display means, and control means for generating tuning information of the musical instrument and causing the display means to display the tuning information based on the transmission information received from the sensor device.