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   Convolution of Two Real Input Signals (CONV)       

Convolution of Two Real Input Signals (CONV)

 

 


Property

Description

Units

Default

Range/Type

NS1

Number of samples from the first input per invocation

None

1

[1, Inf)/Integer

NS2

Number of samples from the second input per invocation

None

1

[1, Inf)/Integer

RIN1

Input1 impedance

Ohm

Inf

(0, Inf]/Real

RIN2

Input2 impedance

Ohm

Inf

(0, Inf]/Real

ROUT

Output impedance

Ohm

0

[0, Inf)/Real

Ports

Input1

Input1 signal (real)

Input2

Input2 signal (real)

Output

Output signal (real)

 

Notes

This model convolves two real input signals. The convolution is performed in the frequency domain according to the overlap-save technique [1].

If the number of samples is INPUT1_NSAMP at the first input port and INPUT2_NSAMP at the second input port, then the total number of samples at the output port (per invocation) will be INPUT1_NSAMP + INPUT2_NSAMP - 1. Keep in mind that the convolution process is commu­tative, which implies that switching the input ports around should not alter the outcome at the out­put port.

Netlist Form

CONV:Name n1 n2 n3 [NS1=val] [NS2=val] [Rin1=val][Rin2=val] [Rout=val]

Netlist Example

CONV:1 1 2 3 NS1=300 NS2=400

References

1. J. G. Proakis and D. G. Manolakis, Digital Signal Processing, Macmillan, 1988.



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