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import os
import torch
import random
import shutil
import librosa
import warnings
import numpy as np
import gradio as gr
import librosa.display
import matplotlib.pyplot as plt
import torchvision.transforms as transforms
from utils import get_modelist, find_wav_files
from collections import Counter
from model import EvalNet
from PIL import Image
TRANSLATE = {
"m_bel": "男声美声唱法",
"f_bel": "女声美声唱法",
"m_folk": "男声民族唱法",
"f_folk": "女声民族唱法",
}
CLASSES = list(TRANSLATE.keys())
def most_common_element(input_list):
# 使用 Counter 统计每个元素的出现次数
counter = Counter(input_list)
# 使用 most_common 方法获取出现次数最多的元素
most_common_element, _ = counter.most_common(1)[0]
return most_common_element
def wav_to_mel(audio_path: str, width=1.6, topdb=40):
os.makedirs("./tmp", exist_ok=True)
try:
y, sr = librosa.load(audio_path, sr=48000)
non_silents = librosa.effects.split(y, top_db=topdb)
non_silent = np.concatenate([y[start:end] for start, end in non_silents])
mel_spec = librosa.feature.melspectrogram(y=non_silent, sr=sr)
log_mel_spec = librosa.power_to_db(mel_spec, ref=np.max)
dur = librosa.get_duration(y=non_silent, sr=sr)
total_frames = log_mel_spec.shape[1]
step = int(width * total_frames / dur)
count = int(total_frames / step)
begin = int(0.5 * (total_frames - count * step))
end = begin + step * count
for i in range(begin, end, step):
librosa.display.specshow(log_mel_spec[:, i : i + step])
plt.axis("off")
plt.savefig(
f"./tmp/mel_{round(dur, 2)}_{i}.jpg",
bbox_inches="tight",
pad_inches=0.0,
)
plt.close()
except Exception as e:
print(f"Error converting {audio_path} : {e}")
def wav_to_cqt(audio_path: str, width=1.6, topdb=40):
os.makedirs("./tmp", exist_ok=True)
try:
y, sr = librosa.load(audio_path, sr=48000)
non_silents = librosa.effects.split(y, top_db=topdb)
non_silent = np.concatenate([y[start:end] for start, end in non_silents])
cqt_spec = librosa.cqt(y=non_silent, sr=sr)
log_cqt_spec = librosa.power_to_db(np.abs(cqt_spec) ** 2, ref=np.max)
dur = librosa.get_duration(y=non_silent, sr=sr)
total_frames = log_cqt_spec.shape[1]
step = int(width * total_frames / dur)
count = int(total_frames / step)
begin = int(0.5 * (total_frames - count * step))
end = begin + step * count
for i in range(begin, end, step):
librosa.display.specshow(log_cqt_spec[:, i : i + step])
plt.axis("off")
plt.savefig(
f"./tmp/cqt_{round(dur, 2)}_{i}.jpg",
bbox_inches="tight",
pad_inches=0.0,
)
plt.close()
except Exception as e:
print(f"Error converting {audio_path} : {e}")
def wav_to_chroma(audio_path: str, width=1.6, topdb=40):
os.makedirs("./tmp", exist_ok=True)
try:
y, sr = librosa.load(audio_path, sr=48000)
non_silents = librosa.effects.split(y, top_db=topdb)
non_silent = np.concatenate([y[start:end] for start, end in non_silents])
chroma_spec = librosa.feature.chroma_stft(y=non_silent, sr=sr)
log_chroma_spec = librosa.power_to_db(np.abs(chroma_spec) ** 2, ref=np.max)
dur = librosa.get_duration(y=non_silent, sr=sr)
total_frames = log_chroma_spec.shape[1]
step = int(width * total_frames / dur)
count = int(total_frames / step)
begin = int(0.5 * (total_frames - count * step))
end = begin + step * count
for i in range(begin, end, step):
librosa.display.specshow(log_chroma_spec[:, i : i + step])
plt.axis("off")
plt.savefig(
f"./tmp/chroma_{round(dur, 2)}_{i}.jpg",
bbox_inches="tight",
pad_inches=0.0,
)
plt.close()
except Exception as e:
print(f"Error converting {audio_path} : {e}")
def embed_img(img_path, input_size=224):
transform = transforms.Compose(
[
transforms.Resize([input_size, input_size]),
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)),
]
)
img = Image.open(img_path).convert("RGB")
return transform(img).unsqueeze(0)
def inference(wav_path: str, log_name: str, folder_path="./tmp"):
if os.path.exists(folder_path):
shutil.rmtree(folder_path)
if not wav_path:
wav_path = "./examples/f_bel.wav"
model = EvalNet(log_name).model
spec = log_name.split("_")[-1]
eval("wav_to_%s" % spec)(wav_path)
outputs = []
all_files = os.listdir(folder_path)
for file_name in all_files:
if file_name.lower().endswith(".jpg"):
file_path = os.path.join(folder_path, file_name)
input = embed_img(file_path)
output = model(input)
pred_id = torch.max(output.data, 1)[1]
outputs.append(pred_id)
max_count_item = most_common_element(outputs)
shutil.rmtree(folder_path)
return os.path.basename(wav_path), TRANSLATE[CLASSES[max_count_item]]
if __name__ == "__main__":
warnings.filterwarnings("ignore")
models = get_modelist()
examples = []
example_wavs = find_wav_files()
model_num = len(models)
for wav in example_wavs:
examples.append([wav, models[random.randint(0, model_num - 1)]])
with gr.Blocks() as demo:
gr.Interface(
fn=inference,
inputs=[
gr.Audio(label="上传录音", type="filepath"),
gr.Dropdown(choices=models, label="选择模型", value=models[0]),
],
outputs=[
gr.Textbox(label="音频文件名", show_copy_button=True),
gr.Textbox(label="唱法识别", show_copy_button=True),
],
examples=examples,
allow_flagging="never",
title="建议录音时长保持在 5s 左右, 过长会影响识别效率",
)
demo.launch()
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