ShepardTone: Shepard Tone

In m-vidal/eaR: Perception-Based Auditory and Music Analysis

Shepard Tone

Description

This function generates a Shepard tone.

Usage

ShepardTone(inMainFreq, inDuration = 1, inSampleFreq = 22050,
            inPhaseFlag = 1, indBLevel = NULL)

Arguments

inMainFreq	the main frequency (in Hz).
inDuration	the duration (in s). If empty or not specified, 1 is used by default.
inSampleFreq	the desired sample frequency for the output signal (in Hz). If empty or not specified, 22050 is used by default.
inPhaseFlag	for choosing whether random phase is to be used or not (1 to use random phase, 0 otherwise). If empty or not specified, 1 is used by default.
indBLevel	dB level of generated tone (in dB) if empty or not specified, no level adjustment is performed.

Value

outSignal, the signal for the tone in numeric class.

Note

To convert the output to "Wave" class use tuneR::Wave and tuneR::normalize functions.

Author(s)

Marc Vidal (R version). Based on the original code from IPEM Toolbox.

Examples

# Note D
D <- ShepardTone(293.66, indBLevel = -20)

m-vidal/eaR documentation built on Nov. 18, 2022, 3:55 p.m.