.flatSpectrum

Internal soundgen function, see <code>flatSpectrum</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

.flatSpectrum function

<dl><dt>audio</dt>
<dd>a list returned by <code>readAudio</code></dd>
<dt>freqWindow</dt>
<dd>the width of smoothing window, Hz. Defaults to median
pitch estimated by <code>analyze</code></dd>
<dt>samplingRate</dt>
<dd>sampling rate of <code>x</code> (only needed if <code>x</code> is a
numeric vector)</dd>
<dt>dynamicRange</dt>
<dd>dynamic range, dB. All values more than one dynamicRange
under maximum are treated as zero</dd>
<dt>windowLength</dt>
<dd>length of FFT window, ms (multiple values in a vector
produce a multi-resolution spectrogram)</dd>
<dt>step</dt>
<dd>you can override <code>overlap</code> by specifying FFT step, ms - a
vector of the same length as windowLength (NB: because digital audio is
sampled at discrete time intervals of 1/samplingRate, the actual step and
thus the time stamps of STFT frames may be slightly different, eg 24.98866
instead of 25.0 ms)</dd>
<dt>overlap</dt>
<dd>overlap between successive FFT frames, %</dd>
<dt>wn</dt>
<dd>window type accepted by <code>ftwindow</code>, currently
gaussian, hanning, hamming, bartlett, blackman, flattop, rectangle</dd>
<dt>zp</dt>
<dd>window length after zero padding, points</dd>
<dt>play</dt>
<dd>if TRUE, plays the processed audio</dd>
<dt>saveAudio</dt>
<dd>full (!) path to folder for saving the processed audio; NULL
= don't save, '' = same as input folder (NB: overwrites the originals!)</dd></dl>

Arguments

Flat spectrum per sound — .flatSpectrum

<dl>

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


<dt>freqWindow</dt>
<dd>the width of smoothing window, Hz. Defaults to median
pitch estimated by <code>analyze</code></dd>


<dt>samplingRate</dt>
<dd>sampling rate of <code>x</code> (only needed if <code>x</code> is a
numeric vector)</dd>


<dt>dynamicRange</dt>
<dd>dynamic range, dB. All values more than one dynamicRange
under maximum are treated as zero</dd>


<dt>windowLength</dt>
<dd>length of FFT window, ms (multiple values in a vector
produce a multi-resolution spectrogram)</dd>


<dt>step</dt>
<dd>you can override <code>overlap</code> by specifying FFT step, ms - a
vector of the same length as windowLength (NB: because digital audio is
sampled at discrete time intervals of 1/samplingRate, the actual step and
thus the time stamps of STFT frames may be slightly different, eg 24.98866
instead of 25.0 ms)</dd>


<dt>overlap</dt>
<dd>overlap between successive FFT frames, %</dd>


<dt>wn</dt>
<dd>window type accepted by <code>ftwindow</code>, currently
gaussian, hanning, hamming, bartlett, blackman, flattop, rectangle</dd>


<dt>zp</dt>
<dd>window length after zero padding, points</dd>


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


<dt>saveAudio</dt>
<dd>full (!) path to folder for saving the processed audio; NULL
= don't save, '' = same as input folder (NB: overwrites the originals!)</dd>

</dl>

.flatSpectrum: Flat spectrum per sound

Description

Usage

Arguments