Singing Voice Signal Processing for Genre-Based Impression Control
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Solution Overview
Problem
General karaoke users face difficulty in setting appropriate parameters for signal processing elements like filters and compressors to achieve desired impressions in singing voices, due to complex associations between parameters and impressions, especially in multiband compressors.
Innovation Solution
A sound signal processing method that allows users to select a genre, set corresponding parameters, and adjust them to manipulate the impression of a singing voice by strengthening specific frequency bands, controlling temporal changes, and enhancing harmonic components, using a control unit with software modules for signal processing blocks like multiband compressors, compressors, and overtone strengtheners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If users manually set parameters for signal processing elements (filters, compressors, multiband compressors), then signal processing precision and impression control are improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent applies parameter changes by automatically adjusting signal processing parameters (filter center frequency, gain, amplitude enhancement factor; compressor threshold, compression ratio, time constant) based on detected voice characteristics such as frequency spectrum and temporal patterns. This allows the system to achieve professional-grade signal processing precision without requiring users to manually set complex parameters, thereby resolving the contradiction between processing precision and parameter setting complexity.
2Manufacturing precision
If users manually set parameters for signal processing elements, then impression control is improved, but ease of operation deteriorates
Solution Approach 1:
The system implements self-service by automatically detecting voice characteristics and autonomously setting optimal parameters for filters and compressors based on the detected spectral and temporal features. This eliminates the need for users to understand complex signal processing concepts or manually adjust multiple parameters, achieving both precise impression control and ease of operation simultaneously.
Solution Approach 2:
The patent employs feedback mechanisms by continuously monitoring voice signal characteristics and automatically adjusting parameters in response to detected patterns. The system analyzes the input voice signal, determines appropriate parameter settings based on voice type and characteristics, and applies real-time adjustments to achieve desired impressions, thereby improving ease of operation while maintaining precise control.
3Reliability
If frequency components are amplified to strengthen voice impression, then sound quality is improved, but harmful factors increase due to excessive amplification
Solution Approach 1:
The patent applies local quality by selectively amplifying specific frequency components rather than uniformly amplifying all frequencies. The system identifies and enhances frequency bands characteristic of different voice types (e.g., amplifying higher frequencies for female voices, lower frequencies for male voices) while leaving other frequency ranges unchanged. This targeted approach improves voice impression quality without causing excessive amplification distortion in unrelated frequency bands.
Data Source
AI summary
A method for processing an input sound signal of singing voice, to obtain a sound signal with an impression different from the input sound signal, includes: selecting a genre from among a plurality of tune genres in accordance with a selection operation by a user, setting, to a first unit, a set of first parameters corresponding to the selected genre, displaying a first impression identifier corresponding to the selected genre for a first control of a first user parameter in the set of first parameters, changing the first user parameter in accordance with a change operation on the first control by the user, and strengthening, by the first unit, signal components within a particular frequency band of the sound signal, in accordance with the set of first parameters including the first user parameters.