librosa.core.frames_to_time¶
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librosa.core.
frames_to_time
(frames, sr=22050, hop_length=512, n_fft=None)[source]¶ Converts frame counts to time (seconds)
Parameters: - frames : np.ndarray [shape=(n,)]
frame index or vector of frame indices
- sr : number > 0 [scalar]
audio sampling rate
- hop_length : int > 0 [scalar]
number of samples between successive frames
- n_fft : None or int > 0 [scalar]
Optional: length of the FFT window. If given, time conversion will include an offset of n_fft / 2 to counteract windowing effects when using a non-centered STFT.
Returns: - times : np.ndarray [shape=(n,)]
time (in seconds) of each given frame number: times[i] = frames[i] * hop_length / sr
See also
time_to_frames
- convert time values to frame indices
frames_to_samples
- convert frame indices to sample indices
Examples
>>> y, sr = librosa.load(librosa.util.example_audio_file()) >>> tempo, beats = librosa.beat.beat_track(y, sr=sr) >>> beat_times = librosa.frames_to_time(beats, sr=sr)