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SignalProcessing

  

BartlettWindow

  

multiply an array of samples by a Bartlett windowing function

 

Calling Sequence

Parameters

Options

Description

Thread Safety

Examples

Compatibility

Calling Sequence

BartlettWindow(A)

Parameters

A

-

Array of real or complex numeric values; the signal

Options

• 

container : Array, predefined Array for holding results

• 

inplace : truefalse, specifies that output should overwrite input

Description

• 

The BartlettWindow(A) command multiplies the Array A by the Bartlett (triangle) windowing function and returns the result in an Array having the same length. The length of A must be at least 3.

• 

The Bartlett windowing function wk is defined as follows for a sample with N points.

wk=2kN10kN21222kN1N212kN1

• 

For an Array with complex values, the real and imaginary parts are multiplied by the same windowing function.

• 

Before the code performing the computation runs, A is converted to datatype float[8] or complex[8] if it does not have one of those datatypes already. For this reason, it is most efficient if A has one of these datatypes beforehand. This does not apply if inplace is true.

• 

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 the same size and datatype as A.

• 

If the inplace or inplace=true option is provided, then A is overwritten with the results. In this case, the container option is ignored.

Thread Safety

• 

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

• 

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

Examples

withSignalProcessing:

aGenerateUniform10,1,1

0.78521849215030790.58841396495699970.99316582269966760.92157828854397080.038780170958489240.0136057925410568920.210756972897798160.74960021581500880.138966357801109770.21228513401001725

(1)

BartlettWindowa

0.00.130758658879333270.441407032310963340.61438552569598050.034471263074212660.0120940378142727920.14050464859853210.33315565147333720.030881412844691060.0

(2)

cArray1..10,'datatype'='float'8,'order'='C_order':

BartlettWindowa,'container'=c

0.00.130758658879333270.441407032310963340.61438552569598050.034471263074212660.0120940378142727920.14050464859853210.33315565147333720.030881412844691060.0

(3)

c

0.00.130758658879333270.441407032310963340.61438552569598050.034471263074212660.0120940378142727920.14050464859853210.33315565147333720.030881412844691060.0

(4)

aGenerateUniform100,1,1:

useplotsindisplayArraylistplota,listplotBartlettWindowaend use

Compatibility

• 

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

• 

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

See Also

SignalProcessing[BlackmanWindow]

SignalProcessing[HammingWindow]

SignalProcessing[HannWindow]

SignalProcessing[KaiserWindow]