| ### Augmentations | |
| Augmentations allows to change stems on the fly increasing the size of dataset by creating new samples from old samples. | |
| Now control for augmentations is done from config file. Below you can find the example of full config, | |
| which includes all available augmentations: | |
| ```config | |
| augmentations: | |
| enable: true # enable or disable all augmentations (to fast disable if needed) | |
| loudness: true # randomly change loudness of each stem on the range (loudness_min; loudness_max) | |
| loudness_min: 0.5 | |
| loudness_max: 1.5 | |
| mixup: true # mix several stems of same type with some probability (only works for dataset types: 1, 2, 3) | |
| mixup_probs: !!python/tuple # 2 additional stems of the same type (1st with prob 0.2, 2nd with prob 0.02) | |
| - 0.2 | |
| - 0.02 | |
| mixup_loudness_min: 0.5 | |
| mixup_loudness_max: 1.5 | |
| # apply mp3 compression to mixture only (emulate downloading mp3 from internet) | |
| mp3_compression_on_mixture: 0.01 | |
| mp3_compression_on_mixture_bitrate_min: 32 | |
| mp3_compression_on_mixture_bitrate_max: 320 | |
| mp3_compression_on_mixture_backend: "lameenc" | |
| all: | |
| channel_shuffle: 0.5 # Set 0 or lower to disable | |
| random_inverse: 0.1 # inverse track (better lower probability) | |
| random_polarity: 0.5 # polarity change (multiply waveform to -1) | |
| mp3_compression: 0.01 | |
| mp3_compression_min_bitrate: 32 | |
| mp3_compression_max_bitrate: 320 | |
| mp3_compression_backend: "lameenc" | |
| # pedalboard reverb block | |
| pedalboard_reverb: 0.01 | |
| pedalboard_reverb_room_size_min: 0.1 | |
| pedalboard_reverb_room_size_max: 0.9 | |
| pedalboard_reverb_damping_min: 0.1 | |
| pedalboard_reverb_damping_max: 0.9 | |
| pedalboard_reverb_wet_level_min: 0.1 | |
| pedalboard_reverb_wet_level_max: 0.9 | |
| pedalboard_reverb_dry_level_min: 0.1 | |
| pedalboard_reverb_dry_level_max: 0.9 | |
| pedalboard_reverb_width_min: 0.9 | |
| pedalboard_reverb_width_max: 1.0 | |
| # pedalboard chorus block | |
| pedalboard_chorus: 0.01 | |
| pedalboard_chorus_rate_hz_min: 1.0 | |
| pedalboard_chorus_rate_hz_max: 7.0 | |
| pedalboard_chorus_depth_min: 0.25 | |
| pedalboard_chorus_depth_max: 0.95 | |
| pedalboard_chorus_centre_delay_ms_min: 3 | |
| pedalboard_chorus_centre_delay_ms_max: 10 | |
| pedalboard_chorus_feedback_min: 0.0 | |
| pedalboard_chorus_feedback_max: 0.5 | |
| pedalboard_chorus_mix_min: 0.1 | |
| pedalboard_chorus_mix_max: 0.9 | |
| # pedalboard phazer block | |
| pedalboard_phazer: 0.01 | |
| pedalboard_phazer_rate_hz_min: 1.0 | |
| pedalboard_phazer_rate_hz_max: 10.0 | |
| pedalboard_phazer_depth_min: 0.25 | |
| pedalboard_phazer_depth_max: 0.95 | |
| pedalboard_phazer_centre_frequency_hz_min: 200 | |
| pedalboard_phazer_centre_frequency_hz_max: 12000 | |
| pedalboard_phazer_feedback_min: 0.0 | |
| pedalboard_phazer_feedback_max: 0.5 | |
| pedalboard_phazer_mix_min: 0.1 | |
| pedalboard_phazer_mix_max: 0.9 | |
| # pedalboard distortion block | |
| pedalboard_distortion: 0.01 | |
| pedalboard_distortion_drive_db_min: 1.0 | |
| pedalboard_distortion_drive_db_max: 25.0 | |
| # pedalboard pitch shift block | |
| pedalboard_pitch_shift: 0.01 | |
| pedalboard_pitch_shift_semitones_min: -7 | |
| pedalboard_pitch_shift_semitones_max: 7 | |
| # pedalboard resample block | |
| pedalboard_resample: 0.01 | |
| pedalboard_resample_target_sample_rate_min: 4000 | |
| pedalboard_resample_target_sample_rate_max: 44100 | |
| # pedalboard bitcrash block | |
| pedalboard_bitcrash: 0.01 | |
| pedalboard_bitcrash_bit_depth_min: 4 | |
| pedalboard_bitcrash_bit_depth_max: 16 | |
| # pedalboard mp3 compressor block | |
| pedalboard_mp3_compressor: 0.01 | |
| pedalboard_mp3_compressor_pedalboard_mp3_compressor_min: 0 | |
| pedalboard_mp3_compressor_pedalboard_mp3_compressor_max: 9.999 | |
| vocals: | |
| pitch_shift: 0.1 | |
| pitch_shift_min_semitones: -5 | |
| pitch_shift_max_semitones: 5 | |
| seven_band_parametric_eq: 0.25 | |
| seven_band_parametric_eq_min_gain_db: -9 | |
| seven_band_parametric_eq_max_gain_db: 9 | |
| tanh_distortion: 0.1 | |
| tanh_distortion_min: 0.1 | |
| tanh_distortion_max: 0.7 | |
| bass: | |
| pitch_shift: 0.1 | |
| pitch_shift_min_semitones: -2 | |
| pitch_shift_max_semitones: 2 | |
| seven_band_parametric_eq: 0.25 | |
| seven_band_parametric_eq_min_gain_db: -3 | |
| seven_band_parametric_eq_max_gain_db: 6 | |
| tanh_distortion: 0.2 | |
| tanh_distortion_min: 0.1 | |
| tanh_distortion_max: 0.5 | |
| drums: | |
| pitch_shift: 0.33 | |
| pitch_shift_min_semitones: -5 | |
| pitch_shift_max_semitones: 5 | |
| seven_band_parametric_eq: 0.25 | |
| seven_band_parametric_eq_min_gain_db: -9 | |
| seven_band_parametric_eq_max_gain_db: 9 | |
| tanh_distortion: 0.33 | |
| tanh_distortion_min: 0.1 | |
| tanh_distortion_max: 0.6 | |
| other: | |
| pitch_shift: 0.1 | |
| pitch_shift_min_semitones: -4 | |
| pitch_shift_max_semitones: 4 | |
| gaussian_noise: 0.1 | |
| gaussian_noise_min_amplitude: 0.001 | |
| gaussian_noise_max_amplitude: 0.015 | |
| time_stretch: 0.01 | |
| time_stretch_min_rate: 0.8 | |
| time_stretch_max_rate: 1.25 | |
| ``` | |
| You can copypaste it into your config to use augmentations. | |
| Notes: | |
| * To completely disable all augmentations you can either remove `augmentations` section from config or set `enable` to `false`. | |
| * If you want to disable some augmentation, just set it to zero. | |
| * Augmentations in `all` subsections applied to all stems | |
| * Augmentations in `vocals`, `bass` etc subsections applied only to corresponding stems. You can create such subsections for all stems which are given in `training.instruments`. |