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SignalProcessing

  

GenerateTone

  

generate a tone

 

Calling Sequence

Parameters

Options

Description

Thread Safety

Examples

Compatibility

Calling Sequence

GenerateTone( n, magnitude, frequency, phase )

Parameters

n

-

posint, number of samples to generate

magnitude

-

realcons, magnitude of the signal

frequency

-

realcons, the frequency relative to the sampling frequency; with value 0 <= frequency < 1/2 (Nyquist sampling frequency)

phase

-

realcons, the phase of the signal (0 <= phase < 2Pi)

Options

• 

container : Array, predefined Array for holding results

Description

• 

The GenerateTone(n, magnitude, frequency, phase ) command generates n samples for a tone (sinusoidal) signal with the indicated values for the magnitude, frequency and phase. The result is returned in an Array with datatype float[8].

• 

If the container=c option is provided, then the results are put into c and c is returned. With this option, no additional memory is allocated to store the result. The container must be an Array of size n having datatype float[8].

Thread Safety

• 

The SignalProcessing[GenerateTone] command is thread-safe as of Maple 17.

• 

For more information on thread safety, see index/threadsafe.

Examples

withSignalProcessing&colon;

GenerateTone10&comma;1&comma;1Pi&comma;Pi

−1.0.4161468364414230.653643621350037−0.9601702863236700.1455000321309770.839071530285352−0.843853957257653−0.1367372214521730.957659481417869−0.660316704993774

(1)

The container option can be used to put generated values into a predefined Array.

cArray1..10&comma;datatype&equals;float8&comma;order&equals;C_order&colon;

GenerateTone10&comma;1&comma;1Pi&comma;Pi&comma;container&equals;c

−1.0.4161468364414230.653643621350037−0.9601702863236700.1455000321309770.839071530285352−0.843853957257653−0.1367372214521730.957659481417869−0.660316704993774

(2)

c

−1.0.4161468364414230.653643621350037−0.9601702863236700.1455000321309770.839071530285352−0.843853957257653−0.1367372214521730.957659481417869−0.660316704993774

(3)

SignalPlotGenerateTone100&comma;1&comma;1Pi&comma;Pi

 

nSamples200&colon;

RelativeFrequency0.02&colon;

signalArrayGenerateTonenSamples&comma;1&comma;RelativeFrequency&comma;0

(4)

A plot of the signal vs the index position (note that this is not equal to time):

SignalPlotsignal

To plot the signal vs time, the sampling rate and signal frequency are required:

SamplingRate1000&colon;

SignalPlotsignal&comma;samplerate&equals;SamplingRateRelativeFrequency

Compatibility

• 

The SignalProcessing[GenerateTone] command was introduced in Maple 17.

• 

For more information on Maple 17 changes, see Updates in Maple 17.

See Also

GenerateSlope

GenerateTriangle

SignalPlot