Intel® Integrated Performance Primitives
Deliberate problems developing high-performance vision, signal, security, and storage applications.
6746 Discussions

zero input signal with only 1 signal of convolution

changeupha
Beginner
1,102 Views

i made input vector => [0 0 0 ... 1 ... 0 0 0]

 

bpf coefficient =>  [0.2548 0.646 ..... 0.1541 ..]

 

convolution of input and bpf coefficient result contain very small noise signal back and forth.

 

such as result =>

[0 0 0 0 .... small noise signal . . . expected signal of convolution ... small noise signal . . . 0 0 0 0 0]

small noise signal is float type such as E-09 ~ E-10 level, look like random signal.

i use  'ippsconvolve_32f()' function.

 

why small noise signal appear back and forth convolution result?

 

0 Kudos
3 Replies
ShanmukhS_Intel
Moderator
1,050 Views

Hi,


Thanks for posting in Intel Communities.


Could you please get back to us with a sample reproducer, steps to reproduce(if any), and environment details (IPP version etc.) so that we can reproduce the issue at our end and help you accordingly?


Best Regards,

Shanmukh.SS


0 Kudos
ShanmukhS_Intel
Moderator
964 Views

Hi,


A gentle reminder:

Could you please get back to us with the earlier requested details so that we could look into your issue further?


Best Regards,

Shanmukh.SS


0 Kudos
ShanmukhS_Intel
Moderator
929 Views

Hi,


Since we didn't hear back from you, we assume that your issue is resolved. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.


Best Regards,

Shanmukh.SS


0 Kudos
Reply