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{
"model_type": "diffusion_cond",
"sample_size": 524288,
"sample_rate": 44100,
"audio_channels": 2,
"model": {
"pretransform": {
"type": "autoencoder",
"iterate_batch": false,
"model_half": true,
"config": {
"encoder": {
"type": "oobleck",
"requires_grad": false,
"config": {
"in_channels": 2,
"channels": 128,
"c_mults": [1, 2, 4, 8, 16],
"strides": [2, 4, 4, 8, 8],
"latent_dim": 128,
"use_snake": true
}
},
"decoder": {
"type": "oobleck",
"config": {
"out_channels": 2,
"channels": 128,
"c_mults": [1, 2, 4, 8, 16],
"strides": [2, 4, 4, 8, 8],
"latent_dim": 64,
"use_snake": true,
"final_tanh": false
}
},
"bottleneck": { "type": "vae" },
"latent_dim": 64,
"downsampling_ratio": 2048,
"io_channels": 2
}
},
"conditioning": {
"configs": [
{ "id": "prompt", "type": "t5", "config": { "t5_model_name": "t5-base", "max_length": 64 } },
{ "id": "seconds_total", "type": "number", "config": { "min_val": 0, "max_val": 256 } }
],
"cond_dim": 768
},
"diffusion": {
"cross_attention_cond_ids": ["prompt", "seconds_total"],
"global_cond_ids": ["seconds_total"],
"diffusion_objective": "rectified_flow",
"distribution_shift_options": { "min_length": 256, "max_length": 4096 },
"type": "dit",
"config": {
"io_channels": 64,
"embed_dim": 1024,
"depth": 16,
"num_heads": 8,
"cond_token_dim": 768,
"global_cond_dim": 768,
"transformer_type": "continuous_transformer",
"attn_kwargs": { "qk_norm": "ln" }
}
},
"io_channels": 64
},
"training": {
"use_ema": true,
"log_loss_info": false,
"pre_encoded": false,
"timestep_sampler": "trunc_logit_normal",
"optimizer_configs": {
"diffusion": {
"optimizer": {
"type": "AdamW",
"config": {
"lr": 5e-5,
"betas": [0.9, 0.95],
"eps": 1e-8,
"weight_decay": 0.01,
"foreach": true
}
},
"scheduler": {
"type": "InverseLR",
"config": { "inv_gamma": 500000, "power": 0.5, "warmup": 0.999 }
}
}
},
"demo": {
"demo_every": 2000,
"demo_steps": 50,
"num_demos": 8,
"demo_cond": [
{"prompt": "Amen break 174 BPM", "seconds_total": 6},
{"prompt": "People talking in a crowded cafe", "seconds_total": 10},
{"prompt": "chillhop 91 bpm", "seconds_total": 6},
{"prompt": "trap 120bpm", "seconds_total": 12},
{"prompt": "A dog barking next to a waterfall", "seconds_total": 6},
{"prompt": "Glitchy bass design, I used Serum for this", "seconds_total": 4},
{"prompt": "chillhop 132 bpm", "seconds_total": 12},
{"prompt": "Birds singing in the forest", "seconds_total": 10}
],
"demo_cfg_scales": [1, 4, 7]
}
}
}
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