audiblelight.augmentation.LowpassFilter

class audiblelight.augmentation.LowpassFilter(sample_rate=44100, cutoff_frequency_hz=None)

Bases: EventAugmentation

Applies a low-pass filter to the audio.

By default, the cutoff frequency for the filter will be sampled randomly between 5512 and 22050 Hz. Either the exact cutoff frequency or a distribution to sample this from can be provided as arguments to the function.

Parameters:

• sample_rate (custom_types.Numeric) – the sample rate for the effect to use.

• cutoff_frequency_hz (Union[custom_types.Numeric, custom_custom_types.DistributionLike]) – the cutoff frequency for the filter, or a distribution-like object to sample this from. Will default to sampling from uniform distribution between 5512 and 22050 Hz if not provided.

__init__(sample_rate=44100, cutoff_frequency_hz=None)

Parameters:

• sample_rate (int | float | complex | integer | floating | None)

• cutoff_frequency_hz (int | float | complex | integer | floating | DistributionLike | None)

Methods

__init__([sample_rate, cutoff_frequency_hz])
from_dict(input_dict)	Initialise an augmentation from a dictionary.
process(input_array)	Calls the underlying FX (or a list of FX)
sample_value(override, default_dist)	Samples a value according to the following method:
to_dict()	Returns the parameters used by this augmentation

Attributes

AUGMENTATION_TYPE
MAX_FREQ
MIN_FREQ
name	Returns the name of this augmentation

MAX_FREQ = 22050

MIN_FREQ = 5512