Claude
a22c238dc4
A complete audio-reactive visualizer for psytrance music featuring: Audio Analysis (DSPEngine): - FFT spectrum analysis via Accelerate/vDSP - 64-band Mel spectrogram - Sub-bass energy extraction (<100Hz) - Automatic sidechain pump detection - Harmonic-to-Noise ratio (HNR) calculation - Peak/transient detection 8 Visualization Modes (Metal Shaders): 1. FFT Classic - Frequency spectrum bars with glow 2. Mel Spectrogram - Waterfall display 3. Sub-Bass - Pulsating rings 4. Sidechain Pump - Breathing zoom effect 5. Harmonic/Noise - Geometric vs chaotic particles 6. Mandelbrot - Audio-reactive fractal zoom 7. Tunnel Warp - Infinite tunnel with distortion 8. DMT Geometry - Sacred geometry patterns Features: - Selectable audio input device (BlackHole support) - Configurable buffer size (512/1024) - Reactivity slider for visual intensity - Auto-hiding control panel - Fullscreen support with keyboard shortcuts (1-8, F, ESC) - Persistent settings via UserDefaults - Psytrance-inspired neon/UV color palette
112 lines
2.7 KiB
Swift
112 lines
2.7 KiB
Swift
//
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// AudioAnalysisData.swift
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// PsytranceVisualizer
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//
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// Audio analysis data structure containing all DSP results
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//
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import Foundation
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/// Contains all audio analysis data computed by DSPEngine
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struct AudioAnalysisData {
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// MARK: - FFT Data
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/// Raw FFT magnitude spectrum
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var fftMagnitudes: [Float]
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// MARK: - Mel Spectrogram
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/// 64 Mel frequency bands
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var melBands: [Float]
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// MARK: - Sub-Bass Analysis
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/// RMS energy below 100Hz (0.0 - 1.0)
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var subBassEnergy: Float
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/// History buffer for time-based visualization
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var subBassHistory: [Float]
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// MARK: - Sidechain Detection
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/// Current envelope follower value (0.0 - 1.0)
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var sidechainEnvelope: Float
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/// Detected pumping amount (0.0 - 1.0)
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var sidechainPumpAmount: Float
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/// Whether pump is currently active
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var isPumping: Bool
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// MARK: - Harmonic-to-Noise Ratio
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/// HNR ratio (0.0 = noise, 1.0 = pure harmonic)
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var hnrRatio: Float
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// MARK: - Transient Detection
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/// Whether a transient peak was detected
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var isPeak: Bool
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/// Intensity of the detected peak (0.0 - 1.0)
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var peakIntensity: Float
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// MARK: - Stereo Channels
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/// Left channel samples
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var leftChannel: [Float]
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/// Right channel samples
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var rightChannel: [Float]
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// MARK: - Additional Analysis
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/// Spectral centroid (brightness) normalized 0.0 - 1.0
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var spectralCentroid: Float
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/// Overall RMS level
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var rmsLevel: Float
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// MARK: - Initialization
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/// Creates an empty AudioAnalysisData with default values
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static var empty: AudioAnalysisData {
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AudioAnalysisData(
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fftMagnitudes: [],
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melBands: Array(repeating: 0, count: 64),
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subBassEnergy: 0,
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subBassHistory: [],
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sidechainEnvelope: 0,
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sidechainPumpAmount: 0,
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isPumping: false,
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hnrRatio: 0.5,
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isPeak: false,
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peakIntensity: 0,
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leftChannel: [],
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rightChannel: [],
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spectralCentroid: 0.5,
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rmsLevel: 0
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)
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}
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/// Creates AudioAnalysisData with specified FFT size
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static func create(fftSize: Int) -> AudioAnalysisData {
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AudioAnalysisData(
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fftMagnitudes: Array(repeating: 0, count: fftSize / 2),
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melBands: Array(repeating: 0, count: 64),
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subBassEnergy: 0,
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subBassHistory: Array(repeating: 0, count: 128),
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sidechainEnvelope: 0,
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sidechainPumpAmount: 0,
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isPumping: false,
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hnrRatio: 0.5,
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isPeak: false,
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peakIntensity: 0,
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leftChannel: [],
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rightChannel: [],
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spectralCentroid: 0.5,
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rmsLevel: 0
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)
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}
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}
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