Tactile Transducer for Low-Frequency Vibration Feedback

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Solution Overview

Problem

Musicians, especially those playing low-frequency instruments like the bass, often face anxiety and performance issues due to inadequate auditory feedback from modern headphones or earphones, which lack sufficient low-frequency drivers, leading to a need for an alternative method to feel low-frequency vibrations.

Innovation Solution

A tactile feedback device comprising a housing with an electrical circuit, a tactile transducer, and an input connection, which transforms electrical signals from musical instruments into vibrations felt by the user, using a coil and magnet configuration, and is detachably connected to a musical instrument or worn as a strap, providing non-acoustic tactile feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If musicians use modern headphones or earphones to receive auditory feedback, then they can monitor their playing and other instruments, but low-frequency tones cannot be heard satisfactorily due to inadequate low-frequency drivers

Engineering Contradiction:
Improvelow-frequency feedback reliabilityVSAvoidheadphone driver complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the acoustic transmission mechanism (sound waves through air to ear) with a direct mechanical vibration transmission mechanism. The tactile transducer converts electrical signals directly into physical vibrations that are transmitted through direct contact with the musician's body, eliminating the need for complex acoustic drivers and providing reliable low-frequency feedback.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a tactile transducer as an intermediary device between the electrical signal and the musician's sensory system. This transducer acts as a mediator that converts electrical signals into tactile vibrations, providing low-frequency feedback without requiring complex acoustic drivers in traditional headphones.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If musicians raise the overall volume to compensate for poor low-frequency response, then low-frequency tones become audible, but this creates unhealthy decibel levels and additional stress on hands and fingers

Engineering Contradiction:
Improvelow-frequency tone perceptionVSAvoidhealth stress from high volume
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the acoustic pressure wave transmission system with a direct mechanical vibration system. By transmitting vibrations through direct physical contact rather than through air pressure waves, the system delivers effective low-frequency feedback without requiring high volume levels that cause health stress.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If large arrays of speakers are used to provide tactile feedback, then low-frequency vibrations can be felt, but this requires expensive performance equipment and large space, making it unavailable for practice or small venues

Engineering Contradiction:
Improvetactile feedback qualityVSAvoidspeaker array complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the essential function of tactile feedback from the complex speaker array system. By isolating and implementing only the vibration generation and direct transmission components in a compact form, the invention provides effective tactile feedback without requiring large speaker arrays, amplifiers, and extensive space.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the complex acoustic system (large speakers, amplifiers, sound waves through air) with a simplified direct mechanical vibration system. The tactile transducer generates vibrations that are transmitted through direct contact, eliminating the need for large speaker arrays and complex acoustic infrastructure.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If acoustic energy transmission is used for feedback, then musicians can hear the sound, but low-frequency vibrations are not effectively transmitted through air to provide tactile sensation

Engineering Contradiction:
Improvetactile vibration transmissionVSAvoidacoustic energy efficiency
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent replaces the inefficient acoustic energy transmission method with a direct mechanical vibration transmission method. By transmitting vibrations through direct physical contact rather than through air, the system efficiently delivers tactile feedback without relying on acoustic energy that is poorly transmitted at low frequencies.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 device effectively conveys low-frequency vibrations to musicians, enhancing their sensory experience and confidence during performances and practices, independent of acoustic energy transmission, allowing for precise tactile feedback without raising overall volume or adding physical stress.

Implementation Method 1

The tactile transducer includes a coil and a magnet. The magnet is moveable by current passing through the coil thereby generating movement that is felt, at least indirectly, by the user.

Methodology Applied
Scientific EffectElectromagnetic interaction: Lorentz Force

Data Source

PatentUS10192535B2System and method for transmitting low frequency vibrations via a tactile feedback device
Publication Date: 2019.01.29 BACKBEAT TECHNOLOGIES LLC
  • US10192535B2 patent drawing
  • US10192535B2 patent drawing
  • US10192535B2 patent drawing

AI summary

A device for providing a tactile feedback response to a user. The device includes a housing, an electrical circuit, a tactile transducer and an input connection. The electrical circuit includes a frequency filter circuit and an amplifier circuit. The tactile transducer includes an electrical coil and a magnet. The input connection is configured to receive an electrical signal. The electrical circuit transforms the electrical signal making it suitable for moving at least a portion of the tactile transducer, at least indirectly, against a portion of the user's body.