@sonoscope/topographic-spectrogram

Topographic contour elevation line WebGL2 shader program plugin for Sonoscope.

Renders real-time elevation isolines and topography contours across the frequency-time spectrum on the GPU.

Installation

npm install @sonoscope/topographic-spectrogram @sonoscope/core

Usage

import "@sonoscope/topographic-spectrogram/auto";
import { Sonoscope } from "@sonoscope/core";

const scope = new Sonoscope({ source });
scope.createSpectrogram(canvas, {
  renderer: { type: "webgl", program: "topographic" },
});

Options

| Option | Type | Default | Description | |---|---|---|---| | contourInterval | number | 0.15 | Energy spacing between adjacent contour rings | | contourLineWidth | number | 1.0 | Line thickness in screen pixels | | contourLineOpacity | number | 0.9 | Opacity of the contour lines [0, 1] | | minEnergyThreshold | number | 0.14 | Noise floor cutoff threshold |

License

MIT