>>Rick Lyons wrote:
>>
>>>On Tue, 05 Jul 2005 13:24:00 -0400, Jerry Avins <jya@ieee.org> wrote:
>>>
>>>
>>>
>>>>athiq006 wrote:
>>>>
>>>>
>>>>>hello
>>>>>
>>>>> i was given a project that uses three DC centered FIR filters.
>>>>>the ouput power of three FIR filter is used to compute the fine
>>>>>filter split on [-1/2,1/2].
>>>>>
>>>>>I wanted to know what this fine filter split means. and how to
>
> calculate
>
>>>>>the interepolation coefficients.
>>>>>
>>>>>-rahman
>>>>
>>>>In order to center DC, you need to have negative frequencies. My
>>>>ignorance is profound; I don't even know what a DC centered filter is.
>
>
>>>>My guess is that "DC centered filter" is just an egghead way of saying
>
>
>>>>"lowpass filter", but without any context, I don't even know where to
>>>>look it up. Is this homework?
>>>>
>>>>Jerry
>>>
>>>
>>>Hi Jer,
>>>
>>> rahman's original post certainly does fall into the
>>>category of "brain teasers". rahman should
>>>review your webpage on how to post questions
>>>on comp.dsp.
>>>
>>>See Ya',
>>>[-Rick-]
>>
>>Good idea, Rick. Here's the URL:
>
> http://users.erols.com/jyavins/procfaq.htm
>
>>Jerry
>>--
>>Engineering is the art of making what you want from things you can get.
>>�����������������������������������������������������������������������
>>hai,
>
> Iam doing a project on Coriolis based mass flow meter,
> we are getting 16 bit samples(signal) from stereo ADC.
> Based on these samples I need to compute phase diffrence and
> frequency.
>
> Currently iam trying to understand the previous code
> that had implemented on ADSP2115BP, their they have used
> 3DC centered FIR filters.
>
> -rahman
I don't know much about that, but I can say that most stereo ADCs are
sigma-delta converters, and as such have enough delay to make control
systems that use the, very difficult to stabilize.
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by athiq006●July 6, 20052005-07-06
>Rick Lyons wrote:
>> On Tue, 05 Jul 2005 13:24:00 -0400, Jerry Avins <jya@ieee.org> wrote:
>>
>>
>>>athiq006 wrote:
>>>
>>>>hello
>>>>
>>>> i was given a project that uses three DC centered FIR filters.
>>>>the ouput power of three FIR filter is used to compute the fine
>>>>filter split on [-1/2,1/2].
>>>>
>>>>I wanted to know what this fine filter split means. and how to
calculate
>>>>the interepolation coefficients.
>>>>
>>>>-rahman
>>>
>>>In order to center DC, you need to have negative frequencies. My
>>>ignorance is profound; I don't even know what a DC centered filter is.
>>>My guess is that "DC centered filter" is just an egghead way of saying
>>>"lowpass filter", but without any context, I don't even know where to
>>>look it up. Is this homework?
>>>
>>>Jerry
>>
>>
>> Hi Jer,
>>
>> rahman's original post certainly does fall into the
>> category of "brain teasers". rahman should
>> review your webpage on how to post questions
>> on comp.dsp.
>>
>> See Ya',
>> [-Rick-]
>
>Good idea, Rick. Here's the URL:
http://users.erols.com/jyavins/procfaq.htm
>
>Jerry
>--
>Engineering is the art of making what you want from things you can get.
>�����������������������������������������������������������������������
>hai,
Iam doing a project on Coriolis based mass flow meter,
we are getting 16 bit samples(signal) from stereo ADC.
Based on these samples I need to compute phase diffrence and
frequency.
Currently iam trying to understand the previous code
that had implemented on ADSP2115BP, their they have used
3DC centered FIR filters.
-rahman
This message was sent using the Comp.DSP web interface on
www.DSPRelated.com
Reply by Jerry Avins●July 6, 20052005-07-06
Rick Lyons wrote:
> On Tue, 05 Jul 2005 13:24:00 -0400, Jerry Avins <jya@ieee.org> wrote:
>
>
>>athiq006 wrote:
>>
>>>hello
>>>
>>> i was given a project that uses three DC centered FIR filters.
>>>the ouput power of three FIR filter is used to compute the fine
>>>filter split on [-1/2,1/2].
>>>
>>>I wanted to know what this fine filter split means. and how to calculate
>>>the interepolation coefficients.
>>>
>>>-rahman
>>
>>In order to center DC, you need to have negative frequencies. My
>>ignorance is profound; I don't even know what a DC centered filter is.
>>My guess is that "DC centered filter" is just an egghead way of saying
>>"lowpass filter", but without any context, I don't even know where to
>>look it up. Is this homework?
>>
>>Jerry
>
>
> Hi Jer,
>
> rahman's original post certainly does fall into the
> category of "brain teasers". rahman should
> review your webpage on how to post questions
> on comp.dsp.
>
> See Ya',
> [-Rick-]
Good idea, Rick. Here's the URL: http://users.erols.com/jyavins/procfaq.htm
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by Rick Lyons●July 6, 20052005-07-06
On Tue, 05 Jul 2005 13:24:00 -0400, Jerry Avins <jya@ieee.org> wrote:
>athiq006 wrote:
>> hello
>>
>> i was given a project that uses three DC centered FIR filters.
>> the ouput power of three FIR filter is used to compute the fine
>> filter split on [-1/2,1/2].
>>
>> I wanted to know what this fine filter split means. and how to calculate
>> the interepolation coefficients.
>>
>> -rahman
>
>In order to center DC, you need to have negative frequencies. My
>ignorance is profound; I don't even know what a DC centered filter is.
>My guess is that "DC centered filter" is just an egghead way of saying
>"lowpass filter", but without any context, I don't even know where to
>look it up. Is this homework?
>
>Jerry
Hi Jer,
rahman's original post certainly does fall into the
category of "brain teasers". rahman should
review your webpage on how to post questions
on comp.dsp.
See Ya',
[-Rick-]
Reply by Andre●July 6, 20052005-07-06
Jon Harris wrote:
> "Jerry Avins" <jya@ieee.org> wrote in message
> news:xcSdncs2ksuvX1ffRVn-uQ@rcn.net...
>
>>athiq006 wrote:
>>
>>>hello i was given a project that uses three DC centered FIR filters.
>>>the ouput power of three FIR filter is used to compute the fine filter split
>>>on [-1/2,1/2].
>>>
>>>I wanted to know what this fine filter split means. and how to calculate
>>>the interepolation coefficients.
>>>
>>>-rahman
>>
>>In order to center DC, you need to have negative frequencies. My ignorance is
>>profound; I don't even know what a DC centered filter is. My guess is that "DC
>>centered filter" is just an egghead way of saying "lowpass filter", but
>>without any context, I don't even know where to look it up. Is this homework?
>
>
> It must not be too common of a term because a Google search for "DC centered
> Filter" returned zero hits! A Google Groups search for same returned only this
> thread. To athiq006, please explain what a "DC centered Filter" is.
>
Maybe just a AC coupled one?
--
Please change no_spam to a.lodwig when replying via email!
Reply by Jon Harris●July 6, 20052005-07-06
"Jerry Avins" <jya@ieee.org> wrote in message
news:xcSdncs2ksuvX1ffRVn-uQ@rcn.net...
> athiq006 wrote:
>> hello i was given a project that uses three DC centered FIR filters.
>> the ouput power of three FIR filter is used to compute the fine filter split
>> on [-1/2,1/2].
>>
>> I wanted to know what this fine filter split means. and how to calculate
>> the interepolation coefficients.
>>
>> -rahman
>
> In order to center DC, you need to have negative frequencies. My ignorance is
> profound; I don't even know what a DC centered filter is. My guess is that "DC
> centered filter" is just an egghead way of saying "lowpass filter", but
> without any context, I don't even know where to look it up. Is this homework?
It must not be too common of a term because a Google search for "DC centered
Filter" returned zero hits! A Google Groups search for same returned only this
thread. To athiq006, please explain what a "DC centered Filter" is.
Reply by Jerry Avins●July 5, 20052005-07-05
athiq006 wrote:
> hello
>
> i was given a project that uses three DC centered FIR filters.
> the ouput power of three FIR filter is used to compute the fine
> filter split on [-1/2,1/2].
>
> I wanted to know what this fine filter split means. and how to calculate
> the interepolation coefficients.
>
> -rahman
In order to center DC, you need to have negative frequencies. My
ignorance is profound; I don't even know what a DC centered filter is.
My guess is that "DC centered filter" is just an egghead way of saying
"lowpass filter", but without any context, I don't even know where to
look it up. Is this homework?
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by Fred Marshall●July 5, 20052005-07-05
"athiq006" <arahman@drikxl.com> wrote in message
news:mq6dncIYROdQDlffRVn-3w@giganews.com...
> hello
>
> i was given a project that uses three DC centered FIR filters.
> the ouput power of three FIR filter is used to compute the fine
> filter split on [-1/2,1/2].
>
> I wanted to know what this fine filter split means. and how to calculate
> the interepolation coefficients.
There's really not enough to go on. How long are the filters? What are
their coefficients?
What "interpolation coefficients" are you referring to?
I've never heard of "fine filter split" but knowing more might help. The
only Google results I found regarded photographic exposure techniques.
Fred
Reply by athiq006●July 5, 20052005-07-05
hello
i was given a project that uses three DC centered FIR filters.
the ouput power of three FIR filter is used to compute the fine
filter split on [-1/2,1/2].
I wanted to know what this fine filter split means. and how to calculate
the interepolation coefficients.
-rahman
This message was sent using the Comp.DSP web interface on
www.DSPRelated.com