Variable Speed String Engagement Wheels for Instrument Timbre Control
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Solution Overview
Problem
Existing mechanical attachments for stringed instruments do not provide precise control over timbre and tonal quality of sounds produced, as they operate at a fixed speed, limiting the player's ability to vary the sound output.
Innovation Solution
A system comprising a rotatable shaft with key-actuated string engaging elements, such as wheels, that can rotate at variable speeds, allowing players to control the timbre and tonal quality by adjusting the orientation and speed of the wheels in contact with the strings, enabling production of both mellow and crisper sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical attachments operate at a fixed speed, then the device structure is simple, but the player cannot precisely control timbre and tonal quality
Solution Approach 1:
The patent applies the dynamics principle by making the wheel rotation speed variable rather than fixed. The motor speed controller enables the wheels to rotate at different speeds, allowing the player to control timbre and tonal quality dynamically. This transforms the static mechanical attachment into a dynamic system that can adapt to different playing requirements.
Solution Approach 2:
The patent implements parameter changes by varying the rotation speed of the wheels through motor control. By changing the speed parameter, the system can produce different timbres and tonal qualities. This allows precise control over the sound characteristics without requiring complex mechanical structures for each sound type.
2Measurement precision
If multiple string engaging elements are added to control different strings, then control precision improves, but device complexity increases
Solution Approach 1:
The patent applies universality by designing wheels that can engage with multiple strings simultaneously or individually. Each wheel is capable of interacting with any string it contacts, and the system can produce different effects on different strings using the same basic wheel mechanism. This multi-functional approach allows precise control over multiple strings without proportionally increasing device complexity.
Solution Approach 2:
The patent implements segmentation by providing separate controllable wheels for different strings or string groups. Each wheel can be independently controlled to engage with specific strings, allowing precise individual control. The segmented design enables selective engagement of different strings while maintaining a modular structure that doesn't overly complicate the overall device.
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 system provides complete and variable control over the timbre and tonal quality of sounds, allowing players to produce a range of tones from mellow to crisper and louder sounds by varying the wheel rotation speed, enhancing the expressive capabilities of stringed instruments.
Implementation Method 1
string engaging elements coupled to the rotatable shaft... positionable in a first orientation for driven rotary engagement with a corresponding string
Implementation Method 2
a plurality of strings coupled to the neck and body so as to permit vibration relative thereto
Data Source
AI summary
An attachment for use with a stringed musical instrument comprises a rotatable shaft and groups of one or more string engaging elements coupled to the rotatable shaft. Each string engaging element of a group is positionable in a first orientation for driven rotary engagement with a corresponding string of the musical instrument. Each string engagement element is further positionable in a second orientation. The attachment further includes key actuators operatively associated with the string engaging elements, and each key actuator is manipulable so as to urge each string engaging element of a group into at least one of the first orientation or the second orientation. In an embodiment, the string engaging element(s) operated by each key actuator are rotatable wheels that rotate at a slower rate or a faster rate, depending on whether or not corresponding strings is/are bent toward the corresponding wheel(s).