Modes

from tdw.physics_audio.modes import Modes

This class is used only in PyImpact, which has been deprecated. See: Clatter.

Resonant mode properties: Frequencies, powers, and times.

---

Fields

• frequencies A numpy array of mode frequencies in Hz.

• powers A numpy array of mode onset powers in dB re 1.

• decay_times A numpy array of mode decay times i.e. the time in ms it takes for each mode to decay 60dB from its onset power.

---

Functions

__init__

Modes(frequencies, powers, decay_times)

Parameter	Type	Default	Description
frequencies	np.ndarray		A numpy array of mode frequencies in Hz.
powers	np.ndarray		A numpy array of mode onset powers in dB re 1.
decay_times	np.ndarray		A numpy array of mode decay times i.e. the time in ms it takes for each mode to decay 60dB from its onset power.

sum_modes

self.sum_modes()

self.sum_modes(fs=44100, resonance=1.0)

Create mode time-series from mode properties and sum them together.

Parameter	Type	Default	Description
fs	int	44100	The framerate.
resonance	float	1.0	The object resonance.

Returns: A synthesized sound.

mode_add

Modes.mode_add(a, b)

(Static)

Add together numpy arrays of different lengths by zero-padding the shorter.

Parameter	Type	Default	Description
a	np.ndarray		The first array.
b	np.ndarray		The second array.

Returns: The summed modes.