Integrated Earplug Speaker Driver for Noise Attenuation and Audio
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Solution Overview
Problem
Conventional ear protection devices either fail to attenuate external noise effectively, leading to potential hearing loss, or they are bulky and inconvenient for listening to audio, as they are not designed to block noise while allowing audio input simultaneously.
Innovation Solution
The development of 'plugfones' that combine earplugs with earbuds, featuring a speaker driver and housing that create a seal in the ear canal, allowing for noise attenuation while providing audio input wirelessly through Bluetooth or wired connections, using flexible or deformable materials to ensure a secure fit and effective sound delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional earplugs are used to block external noise, then noise attenuation is achieved, but audio input capability is lost
Solution Approach 1:
The patent combines the noise-blocking function of earplugs with the audio-delivery function of earbuds into a single integrated device. The earplug body contains a speaker driver that delivers audio directly into the ear canal, while the same device maintains the seal necessary for noise attenuation. This merging resolves the contradiction by making both noise protection and audio input available simultaneously through one device.
Solution Approach 2:
The integrated earplug-earbud device performs multiple functions: it attenuates external noise through the ear canal seal, delivers audio signals through the integrated speaker driver, and provides wireless connectivity via Bluetooth. This multi-functionality allows the single device to replace both traditional earplugs and earbuds, resolving the contradiction between noise blocking and audio input capability.
2Adaptability or versatility
If conventional earbuds are used for audio input, then audio delivery is achieved, but noise attenuation capability is insufficient
Solution Approach 1:
The patent merges the audio delivery mechanism of earbuds with the noise-sealing structure of earplugs. The speaker driver is integrated directly into the earplug body, allowing audio to be delivered while the ear canal seal maintains noise attenuation. This combination resolves the contradiction by providing both audio delivery and noise protection in a single device.
3Object-affected harmful factors
If noise-cancelling headphones are used for noise attenuation, then external noise is blocked, but device size and portability are compromised
Solution Approach 1:
The patent nests the speaker driver and electronic components within the compact earplug body structure. Rather than using large external headphones, the audio delivery system is nested inside the small earplug that fits into the ear canal. This nesting approach resolves the contradiction by providing noise attenuation and audio delivery in a miniature, portable form factor.
Solution Approach 2:
The patent transitions from external noise cancellation (requiring large headphones) to internal ear canal sealing (using small earplugs). By moving the noise-blocking function into the ear canal dimension, the device achieves effective noise attenuation in a compact size, resolving the contradiction between noise blocking and portability.
4Adaptability or versatility
If wired earbuds are used for audio input, then audio delivery is achieved, but wireless convenience is lost
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless Bluetooth communication system. The integrated earplug-earbud device communicates with audio sources wirelessly, eliminating the need for physical cables while maintaining audio delivery capability. This substitution resolves the contradiction by providing both audio delivery and wireless convenience.
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
Plugfones effectively reduce external noise by 25 decibels or more, preventing hearing loss while enabling users to listen to audio in noisy environments without the need for wired connections, offering a convenient and safe listening experience in various settings.
Implementation Method 1
The speaker driver may be in communication with a distal opening extending from the speaker driver toward the distal end of the earplug. Sound from the speaker driver may pass through the distal opening into the user's ear canal.
Implementation Method 2
The earplug can include a ribbed exterior profile and can be flexible to create the seal. An alternate embodiment earplug may include a silicone center, which may be rigid, with pliable or deformable foam surrounding the silicone center. The pliable foam may conform to the interior of an ear canal.
Data Source
AI summary
A wireless audio system suppresses exterior noise and directs desired sound into a user's ear canal. An audio system may include an earplug to create a seal in the interior of an ear canal. The earplug may include a ribbed exterior profile and can be flexible to create the seal. A speaker may be inserted within the earplug. A channel may extend through a body of the earplug to direct sound into a user's ear canal. A proximal opening may extend from the speaker to the channel of the earplug, and an audio wire may be connected to the speaker. The audio wire may connect to a wireless receiver, or other receiver, to allow audio data to pass through the wire and to the speaker, where it can be converted to audio that is passed directly into the ear canal of the user.