Sound Signal Processing With Adjustable Cross-Coupling

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Solution Overview

Problem

Existing sound signal processing devices lack flexibility in cross-coupling mechanisms, limiting user expression and convenience.

Innovation Solution

A sound signal processing device with a cross-coupling section that allows continuous variation of signal coupling through adjustable gains, enabling intuitive and flexible operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a cross-coupling mechanism is provided in sound signal processing devices, then signal processing capability is improved, but flexibility and user convenience deteriorate due to lack of adjustable parameters

Engineering Contradiction:
Improvesignal processing capabilityVSAvoiduser convenience
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent introduces adjustable coupling strength parameters that allow users to continuously vary the degree of cross-coupling between parallel signal processing paths. This parameter control transforms a fixed cross-coupling mechanism into a flexible one, enabling users to adapt the processing characteristics to different musical contexts and preferences, thereby resolving the contradiction between processing capability and ease of operation.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic control of the cross-coupling mechanism through parameters that can be adjusted in real-time during operation. This allows the system to transition between different coupling states (from fully coupled to fully independent paths), providing both strong signal processing capability when needed and simple operation when desired, thus resolving the contradiction between adaptability and ease of operation.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If fixed cross-coupling is implemented, then device complexity is reduced, but expression capability deteriorates

Engineering Contradiction:
Improvemechanism simplicityVSAvoidexpression capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

By introducing adjustable parameters that control the coupling strength between parallel signal processing paths, the patent enables a wide range of expression capabilities without fundamentally changing the device structure. The parameters provide continuous variation in processing characteristics, allowing rich musical expression while maintaining relatively simple device architecture.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a universal cross-coupling mechanism that can produce multiple different processing effects through parameter adjustment. A single device structure with parameter control can emulate various sound processing characteristics, reducing the need for multiple dedicated circuits while expanding expression capability across different musical contexts.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250322818A1Sound signal processing device, musical instrument, sound signal processing method, and non-transitory computer-readable storage medium
Publication Date: 2025.10.16 YAMAHA CORP
  • US20250322818A1 patent drawing
  • US20250322818A1 patent drawing
  • US20250322818A1 patent drawing

AI summary

A sound signal processing device includes a memory and a processor. The memory stores instructions. The processor implements the instructions to input a first sound signal, perform a first signal processing that includes at least first pitch shifting on the first sound signal, and output a first effect processing signal. The processor also implements the instructions to input a second sound signal, perform a second signal processing that includes at least second pitch shifting on the second sound signal, and output a second effect processing signal. The processor also implements the instructions to perform a cross-couple processing of the first effect processing signal and the second effect processing signal. The processor also implements the instructions to set a parameter that imparts continuous variation to a degree of coupling of the first effect processing signal and the second effect processing signal in the cross-couple processing.