| Author |
Message |
Sergey
Guest
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 Posted:
Wed Dec 15, 2004 3:36 pm Post subject:
How can I calculate filter's coefficients by the impuls char |
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Hi everybody!
Excuse me for easy question - I'm novice in DSP. I know how look my
signal without noises and I wanna use matched filter in my work to
dampf the noise.
I heard what the Matched filter is the best choise for such task and I
heard, what the impuls characteristic of Matched filter corresponds to
my mirrored signal. But I don't know how calculate filter coefficients
by the impuls answer.
Can you help me?
Thanx
Sergey |
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Randy Yates
Guest
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| Posted:
Wed Dec 15, 2004 5:25 pm Post subject:
Re: How can I calculate filter's coefficients by the impuls |
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vsp76@mail.ru (Sergey) writes:
| Quote: | Hi everybody!
Excuse me for easy question - I'm novice in DSP. I know how look my
signal without noises and I wanna use matched filter in my work to
dampf the noise.
I heard what the Matched filter is the best choise for such task and I
heard, what the impuls characteristic of Matched filter corresponds to
my mirrored signal. But I don't know how calculate filter coefficients
by the impuls answer.
Can you help me?
Thanx
Sergey
|
Hi Sergey,
If I understand you correctly, you're saying that you want to find
a digital filter that has an impulse response that is equivalent to
a known analog impulse response. Is that correct?
If so, then there is a common technique in digital filter design known
as the "impulse invariance" method that does precisely this. Rick
Lyons' book "Understanding Digital Signal Processing" (second
edition), as well as Proakis and Manolakis's text, "Digital Signal
Processing: Principles, Algorithms, and Applications" (third edition),
have a significant amount of material on this digital filter design
method.
Rick also frequents this newsgroup so you may be able to ask the author
yourself if you have any questions or problems with the text.
Have fun!
--
Randy Yates
Sony Ericsson Mobile Communications
Research Triangle Park, NC, USA
randy.yates@sonyericsson.com, 919-472-1124 |
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Bhaskar Thiagarajan
Guest
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| Posted:
Wed Dec 15, 2004 10:13 pm Post subject:
Re: How can I calculate filter's coefficients by the impuls |
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"Sergey" <vsp76@mail.ru> wrote in message
news:7549330c.0412150236.72656281@posting.google.com...
| Quote: | Hi everybody!
Excuse me for easy question - I'm novice in DSP. I know how look my
signal without noises and I wanna use matched filter in my work to
dampf the noise.
I heard what the Matched filter is the best choise for such task and I
heard, what the impuls characteristic of Matched filter corresponds to
my mirrored signal. But I don't know how calculate filter coefficients
by the impuls answer.
|
Your impulse response is the same as the filter coefficients. In other
words, if you can find the impulse response of a filter h(n), then your
filter coefficients are the same as h(n).
| Quote: |
Can you help me?
Thanx
Sergey |
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