Generate white noise — generate

Creates a praat_sound object containing white noise (random values from a normal distribution). Optionally specify a seed for reproducible noise.

Usage

generate_noise(duration, sampling_rate = 44100, amplitude = 1, seed = NULL)

Arguments

duration: Duration in seconds (must be positive)
sampling_rate: Sampling rate in Hz (default: 44100)
amplitude: Amplitude scaling factor (default: 1.0, must be positive). Controls the standard deviation of the noise.
seed: Optional random seed for reproducible noise generation. If NULL (default), noise will be different each time.

Value

A praat_sound object containing white noise

Details

White noise is generated using rnorm() with mean 0 and standard deviation controlled by the amplitude parameter. For reproducible results, specify a seed value.

Examples

# Generate 1 second of random noise
noise <- generate_noise(1.0)

# Generate reproducible noise
noise1 <- generate_noise(0.5, seed = 42)
noise2 <- generate_noise(0.5, seed = 42)
identical(noise1$values, noise2$values)  # TRUE
#> [1] TRUE

# Generate quieter noise
quiet_noise <- generate_noise(1.0, amplitude = 0.1)