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Version: v2

Target Customizer

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

Overview​

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

It provides a comprehensive set of adjustments including tilt, bass/treble shelves, and 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

Configuration​

Target Customizer is configured in config.js:

// In config.js
TARGET_CUSTOMIZER: {
    CUSTOMIZABLE_TARGETS: ["KEMAR DF (KB006x) Target", "ISO 11904-2 DF"],
    FILTERS: [
      { id: "tilt", name: "Tilt", type: "TILT", freq: 0, q: 0 },
      { id: "bass", name: "Bass", type: "LSQ", freq: 105, q: 0.707 },
      { id: "treble", name: "Treble", type: "HSQ", freq: 2500, q: 0.42 },
      { id: "ear", name: "Ear", type: "PK", freq: 2750, q: 1 },
      { id: "pssr", name: "PSSR", type: "HSQ", freq: 500, q: 0.4 },
    ],
    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 } },
    ],
}

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
  • Use Case: Boost or cut low-frequency content

HSQ (High Shelf)​

  • Purpose: Treble frequency adjustment
  • Use Case: Adjust high-frequency brightness and detail

PK (Peaking)​

  • Purpose: Specific frequency range adjustment
  • 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
  • type: Filter type (TILT, LSQ, HSQ, PK)
  • freq: Center/corner frequency in Hz
  • q: Q factor (bandwidth control)

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",
  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 modernGraphTool 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"
]