Audio Effect Simulation Using Sample-Based Filter Modeling
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Solution Overview
Problem
Current digital signal processing techniques struggle to simulate sound engineering effects applicable to both electric and acoustic musical instruments, as they primarily focus on tonal characteristics of electric guitars and fail to replicate the sound engineering effects heard in recordings, which are complex and vary significantly between instruments and artists.
Innovation Solution
An audio signal processing system that uses a single linear filter designed to represent the frequency response of sound engineering effects, allowing for the simulation of desired tonal characteristics by processing audio signals from both electric and acoustic guitars, and other instruments, using a sample audio signal as a reference to apply preamplifier and nonlinear effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital signal processing techniques focus on simulating tonal characteristics of tube amplifiers, then the signature distorted sound of specific amplifiers can be reproduced, but the system cannot simulate sound engineering effects applicable to both electric and acoustic musical instruments
Solution Approach 1:
The patent creates a universal sound engineering effects simulation system that works with both electric and acoustic musical instruments. The system analyzes recorded audio signals to extract sound engineering effects and applies them to live performances regardless of instrument type, making the simulation capability applicable across different instrument categories rather than being limited to electric guitar amplifier simulation
Solution Approach 2:
The system changes the approach from simulating specific amplifier hardware characteristics to analyzing and replicating sound engineering effects parameters from recorded audio. By extracting effects parameters from recorded signals and applying them dynamically, the system adapts to different instruments and recording conditions without requiring instrument-specific simulation models
2Ease of operation
If multiple filters are used to simulate preamplifier effects, nonlinear effects, and sound engineering effects, then comprehensive sound processing is achieved, but the device complexity increases
Solution Approach 1:
The patent combines multiple sound processing functions into a unified system that analyzes recorded audio to extract all sound engineering effects simultaneously. Rather than requiring separate filters for preamplifier effects, nonlinear effects, and other processing, the system extracts composite effects from the recorded signal and applies them through integrated processing, reducing the number of individual filter components needed
Data Source
AI summary
The invention provides an audio signal processing system for simulating sound engineering effects. The audio signal processing system may simulate, emulate or model sound engineering effects that may be present in a sample audio signal contained in a sound recording. The audio signal processing system may include an input signal, a first filter system, a nonlinear effect simulator and a second filter system. The input signal may include an audio signal and the sample audio signal. The audio signal may be a signal generated with a musical instrument and the sample audio signal may be a previously processed signal for a sound recording. The first filter system may include a chain of filters configured to condition the audio signal. The nonlinear effect simulator may receive the audio signal processed by the first filter system and modify the audio signal nonlinearly. The second filter system may be configured to receive the modified audio signal from the nonlinear effect simulator and process the modified audio signal according to a frequency response that corresponds to the sound engineering effects. The sound engineering effects are determinable based on the sample audio signal and the modified audio signal.