Prev: how do you detect spikes?
Next: Download new programs and english courses
From: Luna Moon on 11 Jun 2010 14:13
Hi all,

I have signals that are very chaotic and choppy. I suspect that there
are quite a bunch of major and minor cycles inside. What's the best
way to detect and single out those cycles?

Any Matlab code around?

Thanks a lot!
From: Jerry Avins on 11 Jun 2010 14:24
On 6/11/2010 2:13 PM, Luna Moon wrote:
> Hi all,
>
> I have signals that are very chaotic and choppy. I suspect that there
> are quite a bunch of major and minor cycles inside. What's the best
> way to detect and single out those cycles?

FFT?

> Any Matlab code around?

Sure!

Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
From: Luna Moon on 11 Jun 2010 15:05
On Jun 11, 2:24 pm, Jerry Avins <j...(a)ieee.org> wrote:
> On 6/11/2010 2:13 PM, Luna Moon wrote:
>
> > Hi all,
>
> > I have signals that are very chaotic and choppy. I suspect that there
> > are quite a bunch of major and minor cycles inside. What's the best
> > way to detect and single out those cycles?
>
> FFT?
>
> > Any Matlab code around?
>
> Sure!
>
> Jerry
> --
> Engineering is the art of making what you want from things you can get.

How? I am looking for a complete solution...
From: Vladimir Vassilevsky on 11 Jun 2010 15:10


Luna Moon wrote:

> Hi all,
>
> I have signals that are very chaotic and choppy. I suspect that there
> are quite a bunch of major and minor cycles inside. What's the best
> way to detect and single out those cycles?
>
> Any Matlab code around?
>
> Thanks a lot!

Wow, what a cretin!
From: Tim Wescott on 11 Jun 2010 15:27
On 06/11/2010 12:05 PM, Luna Moon wrote:
> On Jun 11, 2:24 pm, Jerry Avins<j...(a)ieee.org> wrote:
>> On 6/11/2010 2:13 PM, Luna Moon wrote:
>>
>>> Hi all,
>>
>>> I have signals that are very chaotic and choppy. I suspect that there
>>> are quite a bunch of major and minor cycles inside. What's the best
>>> way to detect and single out those cycles?
>>
>> FFT?
>>
>>> Any Matlab code around?
>>
>> Sure!
>>
>> Jerry
>> --
>> Engineering is the art of making what you want from things you can get.
>
> How? I am looking for a complete solution...

There's a reason that 'work' is a dirty four letter word.

FFT, look for significant spikes. What's "significant" in your case
will be different from the next guy's -- which is why you have to do the
work.

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
 |  Next  |  Last
Pages: 1 2 3
Prev: how do you detect spikes?
Next: Download new programs and english courses