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librosa.fft_frequencies¶

librosa.fft_frequencies(*, sr=22050, n_fft=2048)[source]¶

Alternative implementation of np.fft.fftfreq

Parameters

srnumber > 0 [scalar]: Audio sampling rate
n_fftint > 0 [scalar]: FFT window size

Returns

freqsnp.ndarray [shape=(1 + n_fft/2,)]: Frequencies (0, sr/n_fft, 2*sr/n_fft, ..., sr/2)

Examples

>>> librosa.fft_frequencies(sr=22050, n_fft=16)
array([     0.   ,   1378.125,   2756.25 ,   4134.375,
         5512.5  ,   6890.625,   8268.75 ,   9646.875,  11025.   ])