Pressure-Triggered Audio Ducking Circuit for Smooth Noise Bleed Reduction
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Solution Overview
Problem
Existing noise gates in microphones abruptly cut off sound capture when levels return above a threshold, causing unwanted sound reintroduction and processing delays.
Innovation Solution
A togglable audio ducking device with a pressure-sensitive floor pad or magnetic switch that reduces ambient noise without muting the microphone, using an audio circuit, power circuit, and audio ducking switch to control audio signal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a noise gate is used to reduce ambient noise bleed, then unwanted sound capture is reduced, but the microphone output is abruptly cut off and reintroduced due to processing time delays
Solution Approach 1:
The patent implements dynamic audio level adjustment through a togglable audio ducking device that continuously monitors and adjusts gain levels in real-time. Unlike static noise gates that abruptly cut signals, this system dynamically reduces ambient noise levels by adjusting the audio circuit gain based on detected sound levels, providing smooth transitions without abrupt cuts. The device toggles between normal and reduced gain states based on ambient noise conditions, maintaining natural sound capture while reducing unwanted ambient bleed.
2Object-affected harmful factors
If a noise gate reduces microphone output below a threshold, then ambient noise bleed is reduced, but processing time causes abrupt reintroduction of sound
Solution Approach 1:
The patent employs preliminary action by pre-adjusting gain levels through the togglable audio ducking device before ambient noise becomes problematic. The system proactively reduces gain when ambient noise is detected, rather than reactively cutting signals after thresholds are exceeded. This preliminary adjustment prevents the need for abrupt signal cutting and subsequent reintroduction delays, as the gain is already optimized to reduce ambient bleed while preserving desired audio capture.
3Object-affected harmful factors
If audio levels are reduced to eliminate ambient noise, then noise bleed is minimized, but the microphone cannot operate at full volume when needed
Solution Approach 1:
The togglable audio ducking device provides dynamic adaptability by continuously adjusting gain levels based on real-time ambient noise detection. When ambient noise is present, the device reduces gain to minimize bleed; when ambient noise is absent, it restores full gain for optimal audio capture. This dynamic adjustment maintains microphone versatility across different acoustic environments, allowing full-volume operation when needed while automatically reducing ambient noise bleed when necessary.
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
Effectively reduces ambient noise bleed into microphones without abrupt sound cutoffs, providing seamless audio capture and user-controlled gain reduction.
Implementation Method 1
a mechanically triggered pressure-sensitive floor pad that detects pressure when a user's body weight is placed on the pressure-sensitive floor pad
Implementation Method 2
a magnetic switch attached to a microphone stand, which is triggered when the user rotates the microphone stand to a certain degree in a particular direction
Data Source
AI summary
The present disclosure provides for a togglable audio ducking device preferably with a mechanically triggered pressure-sensitive floor pad that detects pressure when a user's body weight is in the proximity of the microphone. The mechanically triggered pressure-sensitive floor pad may allow the user to effectively reduce ambient noise bleed into microphones without muting the microphone (i.e. audio ducking). In other embodiments, the togglable audio ducking device may be operated using a magnetic switch attached to a microphone stand, which is triggered when the microphone stand rotates in a particular direction to a certain degree.