Audio Signal Processing Chain for Studio-Quality Sound on Consumer Devices
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Solution Overview
Problem
Existing methods fail to consistently produce studio-quality sound outside of recording studios due to high costs and mixed results, necessitating a cost-effective solution for reproducing high-quality audio across various consumer devices.
Innovation Solution
A system and method for digitally processing audio signals using a combination of filters, compressors, and processing modules to enhance audio in real-time, tailored to specific devices and environments, including computer chips and software implementations for PCs, mobile devices, and other consumer electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If advanced speaker design and costly hardware are used to reproduce studio-quality sound, then audio quality is improved, but cost increases
Solution Approach 1:
The patent replaces complex mechanical audio processing systems with digital signal processing algorithms implemented in software. The audio enhancement is achieved through digital filtering, compression, and frequency manipulation rather than physical hardware modifications, thereby reducing cost while maintaining audio quality.
Solution Approach 2:
The patent applies dynamic parameter adjustments to audio signals including frequency boosting, compression ratios, and filter characteristics. These parameter changes enable studio-quality sound reproduction through software-based audio processing rather than expensive hardware modifications.
2Manufacturing precision
If hardware-based audio processing systems are used, then audio quality is improved, but device complexity increases
Solution Approach 1:
The patent substitutes complex hardware audio processing systems with software-based digital signal processing. The audio enhancement functions are implemented as software modules that can be integrated into existing devices without adding physical complexity.
Solution Approach 2:
The patent creates a universal audio processing system that can be deployed across multiple device types (PCs, mobile devices, consumer electronics) through software implementation. This multi-functional approach reduces overall system complexity by using the same processing architecture across different platforms.
3Manufacturing precision
If frequency boosting and dynamic range compression are applied, then clarity and brightness are improved, but distortion may increase
Solution Approach 1:
The patent employs feedback mechanisms in the audio processing chain where the output of filtering and compression operations is monitored and adjusted. This feedback control prevents excessive distortion by dynamically adjusting processing parameters to maintain signal integrity while enhancing clarity and brightness.
Solution Approach 2:
The patent applies frequency boosting and compression selectively to specific frequency ranges rather than uniformly across the entire spectrum. This partial action approach enhances clarity in critical frequency regions while minimizing distortion in other ranges.
Data Source
AI summary
The present invention provides methods and systems for digital processing of an input audio signal. Specifically, the present invention includes a high pass filter configured to filter the input audio signal to create a high pass signal. A first filter module then filters the high pass signal to create a first filtered signal. A first compressor modulates the first filtered signal to create a modulated signal. A second filter module then filters the modulated signal to create a second filtered signal. The second filtered signal is processed by a first processing module. A band splitter splits the processed signal into low band, mid band, and high band signals. The low band and high band signals are modulated by respective compressors. A second processing module further processes the modulated low band, mid band, and modulated high band signals to create an output signal.