.addAM

Internal soundgen function, see <code>addAM</code>.

internal

Performs parametric synthesis of sounds with harmonic and noise
components such as animal vocalizations or human voice. Also offers tools
for audio manipulation and acoustic analysis, including pitch tracking,
spectral analysis, audio segmentation, pitch and formant shifting, etc.
Includes four interactive web apps for synthesizing and annotating audio,
manually correcting pitch contours, and measuring formant frequencies.
Reference: Anikin (2019) <doi:10.3758/s13428-018-1095-7>.

Andrey Anikin

soundgen

Sound Synthesis and Acoustic Analysis

.addAM function

<dl><dt>audio</dt>
<dd>a list returned by <code>readAudio</code></dd>
<dt>amDep</dt>
<dd>amplitude modulation (AM) depth, %. 0: no change; 100: AM with
amplitude range equal to the dynamic range of the sound (anchor format)</dd>
<dt>amFreq</dt>
<dd>AM frequency, Hz (anchor format)</dd>
<dt>amType</dt>
<dd>"sine" = sinusoidal, "logistic" = logistic (default)</dd>
<dt>amShape</dt>
<dd>ignore if amType = "sine", otherwise determines the shape of
non-sinusoidal AM: 0 = ~sine, -1 = notches, +1 = clicks (anchor format)</dd>
<dt>invalidArgAction</dt>
<dd>what to do if an argument is invalid or outside the
range in <code>permittedValues</code>: 'adjust' = reset to default value, 'abort'
= stop execution, 'ignore' = throw a warning and continue (may crash)</dd>
<dt>plot</dt>
<dd>if TRUE, plots the amplitude modulation</dd>
<dt>play</dt>
<dd>if TRUE, plays the processed audio</dd></dl>

Arguments

Add AM to a sound — .addAM

<dl>

<dt>audio</dt>
<dd>a list returned by <code>readAudio</code></dd>


<dt>amDep</dt>
<dd>amplitude modulation (AM) depth, %. 0: no change; 100: AM with
amplitude range equal to the dynamic range of the sound (anchor format)</dd>


<dt>amFreq</dt>
<dd>AM frequency, Hz (anchor format)</dd>


<dt>amType</dt>
<dd>"sine" = sinusoidal, "logistic" = logistic (default)</dd>


<dt>amShape</dt>
<dd>ignore if amType = "sine", otherwise determines the shape of
non-sinusoidal AM: 0 = ~sine, -1 = notches, +1 = clicks (anchor format)</dd>


<dt>invalidArgAction</dt>
<dd>what to do if an argument is invalid or outside the
range in <code>permittedValues</code>: 'adjust' = reset to default value, 'abort'
= stop execution, 'ignore' = throw a warning and continue (may crash)</dd>


<dt>plot</dt>
<dd>if TRUE, plots the amplitude modulation</dd>


<dt>play</dt>
<dd>if TRUE, plays the processed audio</dd>

</dl>

.addAM: Add AM to a sound

Description

Usage

Arguments