Adjustable Active Noise Control for Selective Audio Filtering
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Solution Overview
Problem
Existing audio processing systems, including active noise control and hearing aid technologies, fail to effectively manage ambient sound and prioritize speech, leading to inadequate listening experiences for both individuals with hearing impairments and those without, as they isolate ambient noise and do not allow for seamless communication while maintaining desirable audio input.
Innovation Solution
An adjustable active noise control system utilizing customizable digital signal processing and adaptive filtration, allowing users to personalize their listening experience by combining and adjusting ambient and source sounds, incorporating sound profiling and advanced audio processing techniques to enhance perception of desired audio without isolating ambient noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If active noise control systems isolate and cancel ambient noise, then noise reduction is improved, but speech communication and desirable ambient sound are lost
Solution Approach 1:
The audio spectrum is segmented into multiple frequency bands, with different processing applied to each band. Speech frequencies are preserved and enhanced while noise frequencies are cancelled, allowing selective noise reduction without losing speech communication.
Solution Approach 2:
Different processing characteristics are applied to different frequency regions. The system identifies speech frequency ranges and applies noise cancellation selectively, preserving local quality of speech while removing noise in other frequency bands.
2Object-affected harmful factors
If active noise control systems cancel all ambient sound, then noise reduction is improved, but user customization and listening preferences are lost
Solution Approach 1:
The noise control characteristics are made dynamic and adjustable rather than fixed. Users can modify cancellation strength, select specific frequency ranges to preserve, and customize the balance between noise reduction and ambient sound retention according to their preferences.
Solution Approach 2:
The system incorporates user feedback mechanisms that allow listeners to adjust and personalize the noise control behavior. User preferences are captured and used to adapt the processing parameters, enabling continuous customization of the listening experience.
3Measurement precision
If hearing aid technologies amplify speech frequencies, then speech recognition is improved, but overall listening experience and music quality are degraded
Solution Approach 1:
The system dynamically adjusts processing parameters across different frequency bands rather than applying uniform amplification. Speech frequencies receive enhanced processing for recognition, while music and other audio content frequencies are preserved or enhanced differently to maintain overall listening quality.
Data Source
AI summary
An audio customization system responsive to one or more audio profiles to define a transformation to apply to audio information. The system allows users to select the profiles that dictate the nature of the customization of the audio delivered to an audio output devise such as a headphones. The system is set up to be able to lessen the influence of undesirable audio and enhance desirable audio. The system may specify aspects of audio to be modified by specification of filtering algorithm, characterization of audio samples, monitored distortion, user selection, location specification or environmental specification and may be used in a social networking system.