我正在使用python，我试图使用这个函数，但我正在与它斗争。

def extract_feature_for_one_signal(signal):
    signal = signal.astype(float)
    mel = np.mean(librosa.feature.melspectrogram(signal, sr=SAMPLE_RATE, n_fft=N_FFT, hop_length=HOP_LENGTH).T, axis=0)
    mfccs = np.mean(librosa.feature.mfcc(y=signal, sr=SAMPLE_RATE, n_mfcc=40).T, axis=0)
    stft = np.abs(librosa.stft(signal))
    chroma = np.mean(librosa.feature.chroma_stft(S=stft, sr=SAMPLE_RATE).T, axis=0)
    **contrast = np.mean(librosa.feature.spectral_contrast(S=stft, sr=SAMPLE_RATE).T, axis=0)**
    tonnetz = np.mean(librosa.feature.tonnetz(y=librosa.effects.harmonic(signal), sr=SAMPLE_RATE).T, axis=0)
    average_distance = []
    for std in STD_NUMS:
        average_distance.append(average_distance_between_spikes(np.abs(signal), std, 320))
        average_distance.append(average_distance_between_spikes(signal, std, 320))
    return mfccs, chroma, mel, contrast, tonnetz, average_distance

程序福尔斯：

contrast = np.mean(librosa.feature.spectral_contrast(S=stft, sr=SAMPLE_RATE).T, axis=0)

SAMPLE_RATE = 1000 (it must be 1000.....)

我能做些什么让它工作？