Hall Sensor Hi-Hat Controller for Linear Pedal Position Measurement
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Solution Overview
Problem
Electronic hi-hat systems fail to replicate the physical responsiveness and feel of traditional acoustic hi-hat setups, lacking high-resolution measurement and precise control over pedal travel, which affects sound reproduction.
Innovation Solution
An electronic hi-hat cymbal controller with an internally movable electromagnetic field source and sensor, coupled to a traditional hi-hat stand's pull rod, generates linear signal data to initiate and terminate audio samples based on the position and velocity of the cymbals, providing accurate playback of acoustic hi-hat sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional acoustic hi-hat system is used, then physical responsiveness and feel are provided, but measurement precision and control over pedal travel are insufficient
Solution Approach 1:
The patent replaces mechanical measurement systems with electromagnetic field-based sensing. A Hall effect sensor detects the position of a magnet attached to the pull rod, converting mechanical displacement into electrical signals. This enables precise measurement of pedal travel without complex mechanical linkages or additional sensors throughout the system.
Solution Approach 2:
The patent introduces a magnet as an intermediary element that couples the mechanical pull rod motion to the electromagnetic sensor field. The magnet moves with the pull rod and serves as the transducer element that the Hall sensor detects, simplifying the overall system while enabling precise position measurement.
2Measurement precision
If electronic hi-hat systems are used, then sound reproduction is improved, but physical responsiveness and feel are lost
Solution Approach 1:
The patent implements feedback by continuously monitoring the pull rod position through the Hall sensor and using this information to control the electronic cymbal response. The system detects velocity and position in real-time and adjusts audio sample playback accordingly, creating a feedback loop that maintains physical responsiveness while using electronic sound generation.
Solution Approach 2:
The patent replaces mechanical sound generation with electronic sampling while maintaining mechanical input detection. The Hall sensor and magnet system preserves the mechanical feedback loop, allowing the drummer to feel the pedal resistance and travel while the sound is generated electronically from audio samples.
3Measurement precision
If high-resolution measurement of pedal position is implemented, then accuracy of sound reproduction is improved, but device complexity increases
Solution Approach 1:
The patent uses a Hall effect sensor to replace complex mechanical measurement systems. The sensor provides high-resolution digital position data through electromagnetic field detection, eliminating the need for mechanical linkages, additional sensors, or complex signal processing circuits while achieving precise measurement of pedal travel.
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 effectively recreates the feel and sound of a traditional acoustic hi-hat by offering high-resolution measurement and precise control over pedal travel, enhancing the physical responsiveness and accuracy of sound reproduction.
Implementation Method 1
a sensor responsive to a position of the electromagnetic field source over a length portion of the axis of motion for generating a signal at least partially corresponding to the position of the electromagnetic field source. In embodiments, the electromagnetic field source is a permanent magnet and the sensor is Hall Effect sensor
Data Source
AI summary
A hi-hat cymbal controller for use with an electronic moveable hi-hat cymbal and clutch, both couplable to the pull rod of a traditional hi-hat stand, contains an internally movable electromagnetic field source and sensor responsive to electromagnetic field changes. Downward motion of the hi hat cymbal and/or clutch relative to the stationary controller causes the field source to move axially relative to the sensor which generates a signal data useful by a drum module to initiate and terminate playback of audio samples characteristic of the co-action between the top and bottom cymbals of an acoustic hi-hat system.