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multiplying output of WOLA fwd filterbank with complex vector

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Thu, 02/18/2021
6:14pm
Mike Ir.
#1
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#1
multiplying output of WOLA fwd filterbank with complex vector

Hello,

My system will use FFT or WOLA and let say (FFT/)WOLA size is 64 and giving 33 complex numbers out. If I want to multiply those with some complex vector (length of course same as WOLA output), how do I generate that vector in Audio Weaver which will multiply WOLA output using ComplexMultiplier module?

Regards, Mike

Thu, 02/18/2021
11:01pm
DSPC Kevin
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Hello Mike,

Currently, there is no direct way to do this.  I'll email you a work around on the side, shortly.

Thanks,

Kevin

Fri, 02/19/2021
9:49am
Mike Ir.
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(Reply to #2)

Great, thank you Kevin.

Mon, 05/05/2025
3:24am
Karl Wiklund
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I just ran into this.  Is this still the case?  And what is the "work-around"?  It should probably be published as an application note if this issue hasn't been fixed, given how basic of a use case this is.

Mon, 05/05/2025
7:02pm
DSPC_Gary
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(Reply to #4)

Hi Karl,

I've attached 2 AWDs. 

One shows the use of separate real and imaginary signals feeding into the [Re,Im] to Complex module. 

The other one shows the Buffer Source module with "isComplex" set to true.   Entries in the array then take the form x + yi.

Let me know if you have any further questions.

Thanks,

Gary

Binary Data loadandmult_complex.awd
Binary Data loadandmult_complexbuffersource.awd