Dynamic Sound Image Localization in Electronic Musical Instruments
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Solution Overview
Problem
Existing sound signal processors in electronic musical instruments are limited in creating non-conventional musical expressions due to fixed sound image localization positions, which restrict the versatility of sound source positioning.
Innovation Solution
A sound signal processor system that includes a tone generator, signal processing, and localization processing units, capable of distributing sound signals to multiple speakers with precise gain and delay, allowing for dynamic sound image localization based on pitch, tone, and sound strength, enabling non-conventional musical expressions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sound image localization position is fixed as in existing electronic musical instruments, then the sound signal processor can maintain simple structure and stable operation, but it cannot realize non-conventional new musical expressions
Solution Approach 1:
The patent implements dynamic sound image localization by allowing the sound source position to vary continuously within a spatial range rather than being fixed. The localization position is determined dynamically based on pitch information and tone information, enabling the system to adapt to different musical contexts and realize diverse musical expressions.
Solution Approach 2:
The patent changes the parameters controlling sound image localization by introducing pitch-dependent and tone-dependent positioning. Different pitch ranges and tone types map to different localization positions within the spatial range, creating new musical expressions through parameter variation without requiring complex hardware modifications.
2Adaptability or versatility
If the sound source localization position is uniquely determined as in existing systems, then the processing is simple and reliable, but the versatility of sound source positioning is restricted
Solution Approach 1:
The patent segments the sound signal processing into distinct functional modules: pitch detection unit, tone detection unit, and sound image localization unit. Each module handles a specific aspect of the processing, making the overall system more manageable and easier to operate despite the increased versatility in positioning options.
3Adaptability or versatility
If existing sound signal processors are used, then the system structure is simple, but new musical expressions cannot be created
Solution Approach 1:
The patent creates a universal sound signal processing system that can handle multiple types of musical expressions through a single integrated architecture. The system processes various pitch information and tone information types and maps them to different localization positions, providing multi-functionality without requiring separate processing paths for different musical styles.
Data Source
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AI summary
A sound signal processor includes a receiving portion configured to receive audio information, a sound source position setting portion configured to set position information of a sound source based on the received audio information, and a sound image localization processing portion configured to calculate an output level of a sound signal of the sound source for a plurality of speakers to thereby perform sound image localization processing of the sound source to localize a sound image of the sound source in a sound image localization position based on the set position information.