Musical Sound Processing Apparatus for Realistic Reverberation
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Solution Overview
Problem
Conventional musical sound processing methods fail to generate realistic reverberation effects, as they either ignore subtle air fluctuations or rely on single-moment characteristics, resulting in monotonic sideband waves and limitations in creating diverse sound tones.
Innovation Solution
A musical sound processing apparatus and method that modify the frequency characteristics and time responses of processing unit signals and noise signals, allowing for the replacement of noise signal attributes with those of the modified musical sound signals, enabling the generation of more nuanced and varied sound effects like reverberation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If simulated impulse responses or Schroeder type techniques are used to create reverb effects, then reverb effects can be generated, but the effects are monotonic and lack realistic air fluctuations
Solution Approach 1:
The patent segments the reverb generation process into multiple processing units, each handling different frequency bands or time characteristics. This segmentation allows independent manipulation of different signal components, enabling both realistic air fluctuations through subtle modifications and diverse sound tones through selective processing of different segments.
Solution Approach 2:
The patent introduces dynamic characteristics by modifying time responses and frequency characteristics of processing unit signals in a time-varying manner. This creates realistic air fluctuations that adapt to the musical context, while maintaining versatility through configurable dynamic parameters that can produce different sound tones.
2Reliability
If conventional reverb techniques are used, then processing is simple, but the output lacks nuanced variations and natural sound fluctuations
Solution Approach 1:
The patent performs preliminary processing on the musical sound signal by dividing it into processing unit signals and pre-computing their frequency and time characteristics. This preliminary action enables subsequent nuanced variations to be achieved through controlled modifications, creating natural sound fluctuations without requiring excessively complex real-time processing.
Solution Approach 2:
The patent introduces intermediate processing stages that act as mediators between the input signal and final output. These intermediate stages include processing unit signals that can be independently modified, allowing nuanced variations to be introduced systematically while maintaining overall system manageability and avoiding excessive complexity.
3Adaptability or versatility
If single-moment characteristics are used for reverb generation, then processing is straightforward, but diverse sound tones and varied output cannot be created
Solution Approach 1:
The patent applies local quality by allowing different processing unit signals to have different frequency characteristics and time responses tailored to their specific characteristics. This enables diverse sound tones to be created through localized modifications in different parts of the signal processing chain, while the modular structure keeps the overall complexity manageable.
Data Source
AI summary
A musical sound processing apparatus includes: a first generation part configured to generate a plurality of first signals in which at least one of a frequency characteristic and a time response of each of a plurality of processing unit signals obtained from a musical sound signal is modified; and a second generation part configured to generate a plurality of second signals in which at least one of a frequency characteristic and a time response of a noise signal associated with one or more of the plurality of processing unit signals is replaced with at least one of a frequency characteristic and a time response of the corresponding first signal.