Biquad Filter Bi-phasic Audio Processing on Mobile Devices
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Solution Overview
Problem
Conventional audio technologies fail to preserve phase components of audio signals, leading to a lack of immersive experiences on mobile devices, which rely on artificial processing that modifies the spectral content and requires special hardware, limiting high-quality spatial sound reproduction.
Innovation Solution
Implementing biquad filters on mobile media devices to process audio signals by initializing them with specific coefficients for both real and imaginary components, allowing for bi-phasic separation and reintegration, thus preserving phase integrity and enhancing cognitive effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If artificial reverberation and frequency equalization are used to create spatial effects, then the perception of real environment is improved, but the frequency spectrum of the original signal is negatively affected and phase components are lost
Solution Approach 1:
The patent replaces conventional artificial signal processing mechanisms (reverberation, equalization) with a biological-inspired approach that processes audio signals through multiple independent channels mimicking human ear anatomy, thereby preserving phase components while creating spatial effects
2Ease of manufacture
If conventional audio processing technologies are used, then audio signals can be processed, but phase components become locked together and immersive experience is lost
Solution Approach 1:
The patent segments the audio signal processing into multiple independent channels (first channel for direct sound, second channel for reflected sound) that process different phase components separately, preventing phase locking and preserving spatial information
Solution Approach 2:
The patent introduces a new dimension of processing by separating audio signals into multiple phase components across different channels, transforming the conventional single-channel processing into a multi-dimensional phase-separated processing system
3Power
If special hardware is used for artificial processing of audio signals, then processing capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes mobile devices universally capable of advanced audio processing by implementing software-based multi-phase separation algorithms that work on standard hardware, eliminating the need for specialized audio processing equipment
Solution Approach 2:
The patent substitutes complex hardware processing systems with software-based algorithms that run on standard mobile device processors, thereby maintaining processing capability while reducing hardware complexity
4Productivity
If data compression technologies are applied to audio signals, then storage and transmission efficiency is improved, but phase components are ignored and audio quality deteriorates
Solution Approach 1:
The patent applies multi-phase separation processing before data compression, thereby preserving phase component information in the processed signal that can then be compressed without losing the critical spatial information
Data Source
AI summary
Disclosed is a method of presenting audio information to a user. The method comprising receiving samples of a waveform from a media handling component, initializing a biquad filter with a set of one or more coefficients corresponding to a set of one or more stages of the biquad filter for both a real component of the samples and an imaginary component of the samples. The biquad filter is implemented on a media processing component of the mobile media device. The method further comprises applying the biquad filter to the samples of the waveform to generate an output for presentation to the user, the output comprising a processed rendering of the real component of the samples and the imaginary component of the samples.