import librosa
import matplotlib.pyplot as plt
import numpy as np
import librosa.display
import IPython.display as ipd
%matplotlib inline
filepath = './audio_train/happy/'
filename = filepath + '00334.wav'
ipd.Audio(filename) #load a local happy.wav
y, sr = librosa.load(filename)
FileNotFoundError: [WinError 2] 系統找不到指定的檔案。