Temporal

class audioflux.Temporal(frame_length=2048, slide_length=512, window_type=WindowType.HANN)

Temporal feature

Parameters

frame_length: int

frame length

slide_length: int

sliding length

window_type: WindowType

Window type for each frame.

See: type.WindowType

Examples

Read 220Hz audio data

>>> import audioflux as af
>>> audio_path = af.utils.sample_path('220')
>>> audio_arr, sr = af.read(audio_path)

Create Temporal and extract feature

>>> temp_obj = af.Temporal(frame_length=2048, slide_length=512)
>>> energy_arr, rms_arr, zero_cross_arr, m_arr = temp_obj.get_data(audio_arr)

Methods

cal_time_length(data_length)	Calculate the length of a frame from audio data.
get_data(data_arr)	Get energy/rms/zeroCrossRate feature

cal_time_length(data_length)

Calculate the length of a frame from audio data.

Parameters

data_length: int

The length of the data to be calculated.

Returns

out: int

get_data(data_arr)

Get energy/rms/zeroCrossRate feature

Parameters

data_arr: np.ndarray [shape=(…, n)]

Input audio data

Returns

energy_arr: np.ndarray [shape=(…, time)]

energy feature

rms_arr: np.ndarray [shape=(…, time)]

rms feature

zcr_arr: np.ndarray [shape=(…, time)]

zero Cross Rate feature

m_arr: np.ndarray [shape=(…, time, frame)]