训练模型时报错：
TypeError: empty() received an invalid combination of arguments - got (tuple, dtype=NoneType, device=NoneType), but expected one of:
* (tuple of ints size, *, tuple of names names, torch.memory_format memory_format, torch.dtype dtype, torch.layout layout, torch.device device, bool pin_memory, bool requires_grad)
* (tuple of SymInts size, *, torch.memory_format memory_format, Tensor out, torch.dtype dtype, torch.layout layout, torch.device device, bool pin_memory, bool requires_grad)解决：确保num_classes是int，且检查构建卷积时的参数，要求为int整型
model = SoundNet(num_classes=10)注意⚠️：若构建卷积时的参数有除法，python3中两个int整型相除得到的是float浮点型，将其转化为int型即可～