dot-bandpass: Bandpass filter per sound

In soundgen: Sound Synthesis and Acoustic Analysis

Bandpass filter per sound

Description

Internal soundgen function

Usage

.bandpass(
  audio,
  lwr = NULL,
  upr = NULL,
  action = c("pass", "stop")[1],
  dB = Inf,
  bw = 0,
  na.rm = TRUE,
  normalize = FALSE,
  plot = FALSE,
  width = 900,
  height = 500,
  units = "px",
  res = NA,
  ...
)

Arguments

audio	a list returned by readAudio
lwr, upr	cutoff frequencies, Hz. Specifying just lwr gives a high-pass filter, just upr low-pass filter with action = 'pass' (or vice versa with action = 'stop'). Specifying both lwr and upr a bandpass/bandstop filter, depending on 'action'
action	"pass" = preserve the selected frequency range (bandpass), "stop" = remove the selected frequency range (bandstop)
dB	a positive number giving the strength of effect in dB (defaults to Inf - complete removal of selected frequencies)
bw	bandwidth of the filter cutoffs, Hz. Defaults to 0 (abrupt, step function), a positive number corresponds to the standard deviation of a Gaussian curve, and two numbers set different bandwidths for the lower and upper cutoff points
na.rm	if TRUE, NAs are interpolated, otherwise they are preserved in the output
normalize	if TRUE, resets the output to the original scale (otherwise filtering often reduces the amplitude)
plot	should a spectrogram be plotted? TRUE / FALSE
width, height, units, res	graphical parameters for saving plots passed to png
...	other graphical parameters passed to plot() as well as to meanspec

soundgen documentation built on Sept. 12, 2024, 6:29 a.m.