Equalizer Curve Intensity Control for Multi-Band Gain Adjustment

Solution Overview

Problem

Conventional signal processing apparatuses, especially digital mixers, complicate operations for changing gain values of equalizer points, requiring users to perform selections and adjustments for each point individually, making the process cumbersome.

Innovation Solution

A signal processing apparatus that allows collective adjustment of gain values across multiple equalizer points by using a magnification parameter to modify a reference equalizer curve, simplifying the process through a single operator input, such as an intensity parameter, which multiplies gain values to adjust the overall intensity of the equalizer curve.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If individual selection and adjustment operations are performed for each equalizer point, then precise control of each frequency band is achieved, but operational complexity increases significantly

Engineering Contradiction:

Improveprecise control of each frequency bandVSAvoidoperational complexity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The gain adjustment mechanism is designed to serve multiple functions: it can adjust individual equalizer points selectively or adjust multiple equalizer points collectively through a single operation. This multi-functionality allows the system to maintain precise control capabilities while adding a simplified collective adjustment mode, thereby reducing operational complexity without sacrificing precision control capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system introduces a collective adjustment parameter that modifies the gain values of multiple equalizer points simultaneously. By changing this parameter, users can adjust the overall intensity of the equalizer curve across multiple frequency bands in one operation, rather than manually adjusting each point individually, thus reducing the number of operations required while maintaining control precision.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If multiple operators are provided on the panel for each parameter, then detailed control is achieved, but device complexity increases

Engineering Contradiction:

Improvedetailed control capabilityVSAvoidnumber of operators on panel

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The gain adjustment mechanism is designed to serve multiple functions: it can adjust individual equalizer points selectively or adjust multiple equalizer points collectively through a single operation. This multi-functionality allows the system to maintain precise control capabilities while adding a simplified collective adjustment mode, thereby reducing operational complexity without sacrificing precision control capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges the functionality of multiple individual adjustment operators into a single collective adjustment operator. This operator can simultaneously modify multiple equalizer point parameters, effectively combining what would otherwise require multiple separate controls into one unified control element, thereby reducing the total number of operators needed on the panel.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If digital mixers reduce the number of panel operators, then device complexity is reduced, but operations for changing gain values become more complicated

Engineering Contradiction:

Improvenumber of operators on panelVSAvoidsimplicity of gain adjustment operations

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The system introduces a collective adjustment parameter that modifies the gain values of multiple equalizer points simultaneously. By changing this parameter, users can adjust the overall intensity of the equalizer curve across multiple frequency bands in one operation, rather than manually adjusting each point individually, thus reducing the number of operations required while maintaining control precision.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP2922200B1Signal processing apparatus and method

Publication Date: 2018.10.10 YAMAHA CORP

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AI summary

Reference gain values Ga1, Gb1 and Gc1 are set for respective EQ points A, B and C of a plurality of frequency bands in EQ CURVE 1 currently set in an EQ module. In response to an operation of an operator, an intensity parameter value, which is a multiplier for the reference gain values Ga1, Gb1 and Gc1, is changed, so that the reference gain values Gal, Gb1 and Gel are changed in a collective fashion. In EQ CURVE 2 having been changed from EQ CURVE 1, the intensity parameter value exceeds "1 (100 %)" and actual gain values of the EQ points A', B' and C' of the frequency bands are Ga2, Gb2 and Gc2, so that EQ CURVE 2 assumes emphasized frequency characteristics.