FP32
# !pip install git+https://github.com/huggingface/diffusers.git
from diffusers import DiffusionPipeline
import scipy
model_id = "harmonai/unlocked-250k"
pipeline = DiffusionPipeline.from_pretrained(model_id)
audio = pipeline(audio_length_in_s=4.0).audios
scipy.io.wavfile.write("maestro_test.wav", pipe.unet.sample_rate, audios)
FP16
Faster at a small loss of quality
# !pip install git+https://github.com/huggingface/diffusers.git
from diffusers import DiffusionPipeline
import scipy
import torch
model_id = "harmonai/unlocked-250k"
pipeline = DiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16)
audio = pipeline(audio_length_in_s=4.0).audios
scipy.io.wavfile.write("maestro_test.wav", pipe.unet.sample_rate, audios)