| { |
| "dataset_name": "HTMOneShotLoopClassification", |
| "version": "1.0.0", |
| "description": "Metadata schema for HTMOneShotLoopClassification dataset features", |
| "total_features": 55, |
| "features": [ |
| { |
| "name": "filename", |
| "type": "string", |
| "description": "Original audio filename" |
| }, |
| { |
| "name": "stem", |
| "type": "categorical", |
| "description": "Target classification category (kick, snare, hihat, bass, synth, vocal, percussion, fx)", |
| "values": ["kick", "snare", "hihat", "bass", "synth", "vocal", "percussion", "fx"] |
| }, |
| { |
| "name": "category", |
| "type": "categorical", |
| "description": "Sample type: 'one-shots' or 'loops'", |
| "values": ["one-shots", "loops"] |
| }, |
| { |
| "name": "subfolder", |
| "type": "string", |
| "description": "Subfolder path within category (optional)" |
| }, |
| { |
| "name": "duration", |
| "type": "float", |
| "description": "Audio duration in seconds", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "sample_rate", |
| "type": "integer", |
| "description": "Audio sample rate in Hz", |
| "typical_value": 44100 |
| }, |
| { |
| "name": "rms", |
| "type": "float", |
| "description": "Root Mean Square energy (loudness measure)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "zcr", |
| "type": "float", |
| "description": "Zero Crossing Rate (noisiness measure)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "spectral_centroid", |
| "type": "float", |
| "description": "Spectral centroid in Hz (brightness measure)", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "spectral_rolloff", |
| "type": "float", |
| "description": "Spectral rolloff frequency in Hz (high-frequency content)", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "spectral_bandwidth", |
| "type": "float", |
| "description": "Spectral bandwidth in Hz (frequency spread)", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "tempo", |
| "type": "float", |
| "description": "Detected tempo in BPM (0.0 if not detected)", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "onset_count", |
| "type": "integer", |
| "description": "Number of detected onsets (transient events)", |
| "range": [0, "varies"] |
| }, |
| { |
| "name": "pitch_mean", |
| "type": "float", |
| "description": "Mean fundamental frequency in Hz (0.0 if not detected)", |
| "range": [0.0, "varies"] |
| }, |
| { |
| "name": "harmonic_ratio", |
| "type": "float", |
| "description": "Ratio of harmonic to total energy (tonal vs noisy)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "percussive_ratio", |
| "type": "float", |
| "description": "Ratio of percussive to total energy", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "freq_sub_bass", |
| "type": "float", |
| "description": "Energy in sub-bass frequency band (20-60 Hz)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "freq_bass", |
| "type": "float", |
| "description": "Energy in bass frequency band (60-250 Hz)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "freq_low_mid", |
| "type": "float", |
| "description": "Energy in low-mid frequency band (250-2000 Hz)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "freq_high_mid", |
| "type": "float", |
| "description": "Energy in high-mid frequency band (2000-6000 Hz)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "freq_high", |
| "type": "float", |
| "description": "Energy in high frequency band (6000+ Hz)", |
| "range": [0.0, 1.0] |
| }, |
| { |
| "name": "filepath", |
| "type": "string", |
| "description": "Full file path to original audio file" |
| }, |
| { |
| "name": "spectral_contrast_1", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 1", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_2", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 2", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_3", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 3", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_4", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 4", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_5", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 5", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_6", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 6", |
| "range": ["varies"] |
| }, |
| { |
| "name": "spectral_contrast_7", |
| "type": "float", |
| "description": "Spectral contrast in frequency band 7", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_1", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 1", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_2", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 2", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_3", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 3", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_4", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 4", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_5", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 5", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_6", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 6", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_7", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 7", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_8", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 8", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_9", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 9", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_10", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 10", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_11", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 11", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_12", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 12", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_mean_13", |
| "type": "float", |
| "description": "Mean of Mel-Frequency Cepstral Coefficient 13", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_1", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 1", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_2", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 2", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_3", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 3", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_4", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 4", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_5", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 5", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_6", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 6", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_7", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 7", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_8", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 8", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_9", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 9", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_10", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 10", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_11", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 11", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_12", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 12", |
| "range": ["varies"] |
| }, |
| { |
| "name": "mfcc_std_13", |
| "type": "float", |
| "description": "Standard deviation of Mel-Frequency Cepstral Coefficient 13", |
| "range": ["varies"] |
| } |
| ], |
| "extraction_method": "librosa", |
| "notes": "Features extracted using librosa audio analysis library. MFCCs computed with 13 coefficients. Spectral features computed from magnitude spectrogram. Frequency bands sum to 1.0 (normalized energy distribution)." |
| } |
|
|
|
|
