{ "sample_rate": 16000, "n_mels": 128, "n_fft": 1024, "hop_length": 512, "duration": 4, "batch_size": 64, "num_epochs": 25, "learning_rate": 0.0001, "num_workers": 2, "max_samples_per_dataset": 20000, "weight_decay": 0.01 }