Target Customizer Extension

A powerful target curve customization extension that provides advanced adjustment capabilities for personalizing headphone target curves in modernGraphTool.

Overview

The Target Customizer extension allows users to apply sophisticated adjustments to target curves, enabling personalized tuning based on individual preferences.

It provides a comprehensive set of adjustments including tilt, bass/treble shelves, ear gain adjustments.

Features

• Advanced Filter Types: Support for multiple parametric filter types (TILT, LSQ, HSQ, PK)
• Real-time Adjustments: Live preview of target curve modifications
• Filter Presets: Built-in presets for popular tuning styles (Harman 2013, 2015, 2018)
• Target Selection: Customize specific target curves with individual filter settings
• Initial Load Filters: Automatic application of preferred filters on startup

Technical Specifications

Property	Value
Extension Name	target-customizer
Latest Version	1.0.0
Minimum Core API Level	1
Minimum Core Version	1.0.0
I18N Support	Yes

Configuration

{
  NAME: "target-customizer",
  DESCRIPTION: "target customization feature set for modernGraphTool",
  ENABLED: true,
  I18N_ENABLED: true,
  CONFIG: {
    FILTERS: [
      { id: "tilt", name: "Tilt", description: "Filter for adjusting the overall tonal balance",
        type: "TILT", freq: 0, q: 0 },
      { id: "bass", name: "Bass", description: "Filter for adjusting low frequencies",
        type: "LSQ", freq: 105, q: 0.707 },
      { id: "treble", name: "Treble", description: "Filter for adjusting high frequencies",
        type: "HSQ", freq: 2500, q: 0.42 },
      { id: "ear", name: "Ear", description: "Filter for adjusting ear gain",
        type: "PK", freq: 2750, q: 1 },
      { id: "pssr", name: "PSSR", description: "Predicted Steady State Response",
        type: "HSQ", freq: 500, q: 0.4 },
    ],
    CUSTOMIZABLE_TARGETS: [ "KEMAR DF (KB006x)", "ISO 11904-2 DF" ],
    FILTER_PRESET: [
      { name: 'Harman 2013', filter: { bass: 6.6, treble: -1.4 }},
      { name: 'Harman 2015', filter: { bass: 6.6, treble: -3, ear: -1.8 }},
      { name: 'Harman 2018', filter: { bass: 4.8, treble: -4.4 }},
    ],
    INITIAL_TARGET_FILTERS: [
      { name: "KEMAR DF (KB006x)", filter: { tilt: -0.8, bass: 6 }},
      { name: "ISO 11904-2 DF", filter: { tilt: -0.8, bass: 6 }},
    ]
  }
}

Filter Types

Available Filter Types

TILT Filter

• Purpose: Overall tonal balance adjustment
• Behavior: Applies a linear frequency-dependent gain change
• Use Case: Adjust overall brightness or warmth of the target curve

LSQ (Low Shelf)

• Purpose: Bass frequency adjustment
• Parameters: Frequency (105 Hz), Q (0.707)
• Use Case: Boost or cut low-frequency content

HSQ (High Shelf)

• Purpose: Treble frequency adjustment
• Parameters: Frequency (2500 Hz), Q (0.42)
• Use Case: Adjust high-frequency brightness and detail

PK (Peaking)

• Purpose: Specific frequency range adjustment
• Parameters: Frequency (2750 Hz), Q (1.0)
• Use Case: Ear gain compensation and specific frequency targeting

Filter Configuration

Each filter in the FILTERS array contains:

• id: Unique identifier for the filter
• name: Display name in the user interface
• description: Helpful description of the filter's purpose
• type: Filter type (TILT, LSQ, HSQ, PK)
• freq: Center/corner frequency in Hz
• q: Q factor (bandwidth control)

Installation

1. Add the target-customizer folder to your extensions directory
2. Add the configuration to extensions/extensions.config.js
3. Enable the extension by setting ENABLED: true
4. Restart modernGraphTool to load the extension

Usage

Basic Target Customization

Selecting Targets

1. Target List: Choose from available customizable targets
2. Filter Application: Apply filters to selected targets
3. Real-time Preview: See changes applied immediately to the graph

Filter Adjustments

1. Individual Filters: Adjust each filter type independently
2. Gain Control: Set positive or negative gain values
3. Visual Feedback: Watch target curve update in real-time

Using Presets

1. Select Preset: Choose from available preset options
2. Apply Filters: Preset values are automatically applied

Customization and Extensibility

Adding Custom Filters

{ 
  id: "custom", 
  name: "Custom Filter", 
  description: "My custom filter description",
  type: "PK", 
  freq: 1000, 
  q: 2.0 
}

Custom Preset Creation

{ 
  name: 'My Custom Preset', 
  filter: { 
    tilt: -1.0, 
    bass: 5.0, 
    treble: -2.0, 
    ear: -1.0 
  }
}

Initial Load Filters

Automatically applies preferred filters when the extension loads:

INITIAL_TARGET_FILTERS: [
  { name: "KEMAR DF (KB006x)", filter: { tilt: -0.8, bass: 6 }},
]

Custom Target Support

Add new targets to the customizable list:

CUSTOMIZABLE_TARGETS: [ 
  "KEMAR DF (KB006x)", 
  "ISO 11904-2 DF",
  "Custom Target Name"
]