Audio Package Symbol

FrequencyModulation

FrequencyModulation[f_c, {f_m, pd}, dur]
creates a Sound object that is a frequency-modulated sinusoid, having carrier and modulating frequencies f_c and f_m, measured in hertz, peak deviation pd hertz, and a duration of dur seconds.

FrequencyModulation[f_c, {{f₁, pd₁}, {f₂, pd₂}, ...}, dur, ModulationType->Cascade]
creates a cascade frequency-modulated sinusoid, where pd_i is the peak deviation associated with modulating frequency f_i.

FrequencyModulation[f_c, {{f₁, pd₁}, {f₂, pd₂}, ...}, dur, ModulationType->Parallel]
creates a parallel frequency-modulated sinusoid, where pd_i is the peak deviation associated with modulating frequency f_i.

MORE INFORMATION

To use FrequencyModulation, you first need to load the Audio Package using Needs["Audio`"].

The following options can be given:

DisplayFunction	Identity	function to apply to sound before returning it
ModulationType	Standard	the type of modulation to use
PlayRange	All	range of sound amplitude levels to include
SampleDepth	8	number of bits used to encode sound amplitude
SampleRate	8192	sampling rate per second

The expression used by FrequencyModulation is given by .

Cascade frequency modulation is a type of frequency modulation where the modulating frequency is itself modulated, thus cascading the modulation.

In contrast to cascade frequency modulation, Parallel frequency modulation is a technique where the carrier frequency is modulated by two or more modulating frequencies that do not modulate each other.