How do you process a pulse signal?

So I want to investigate how to process a pulse signal from contact of
human skin i.e. picking up the frequency pulse from the finger. I need the
steps on how this works in detail in general and also consider what level
of amplification, modulation and filtering it needs. I am trying to
impliment this using a raspberry pi so I can output the signal waves on a
screen from the pi. Additional information for the pi would also be very
helpful. 

Also how would you build an amplifier for this on the raspberry pi? 


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Posted through http://www.DSPRelated.com

On Wed, 28 Oct 2015 19:38:09 -0500, shadowdarkness wrote:

> So I want to investigate how to process a pulse signal from contact of
> human skin i.e. picking up the frequency pulse from the finger. I need
> the steps on how this works in detail in general and also consider what
> level of amplification, modulation and filtering it needs. I am trying
> to impliment this using a raspberry pi so I can output the signal waves
> on a screen from the pi. Additional information for the pi would also be
> very helpful.

Huh?  A meaningful question may elicit a meaningful answer.

What "pulse signal from contact of human skin"?  I'm not even certain 
that is grammatically correct, much less that it has any possible meaning 
behind it.

There is no such thing as a "frequency pulse" -- what do you really mean?

"in detail in general" -- which do you want?

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

>On Wed, 28 Oct 2015 19:38:09 -0500, shadowdarkness wrote:
>
>> So I want to investigate how to process a pulse signal from contact of
>> human skin i.e. picking up the frequency pulse from the finger. I need
>> the steps on how this works in detail in general and also consider
what
>> level of amplification, modulation and filtering it needs. I am trying
>> to impliment this using a raspberry pi so I can output the signal
waves
>> on a screen from the pi. Additional information for the pi would also
be
>> very helpful.
>
>Huh?  A meaningful question may elicit a meaningful answer.
>
>What "pulse signal from contact of human skin"?  I'm not even certain 
>that is grammatically correct, much less that it has any possible meaning

>behind it.
>
>There is no such thing as a "frequency pulse" -- what do you really
mean?
>
>"in detail in general" -- which do you want?
>
>-- 
>
>Tim Wescott
>Wescott Design Services
>http://www.wescottdesign.com

Tim, I am disappointed,he wants new ECG method

kaz
---------------------------------------
Posted through http://www.DSPRelated.com

On Wed, 28 Oct 2015 21:10:55 -0500, kaz wrote:

>>On Wed, 28 Oct 2015 19:38:09 -0500, shadowdarkness wrote:
>>
>>> So I want to investigate how to process a pulse signal from contact of
>>> human skin i.e. picking up the frequency pulse from the finger. I need
>>> the steps on how this works in detail in general and also consider
> what
>>> level of amplification, modulation and filtering it needs. I am trying
>>> to impliment this using a raspberry pi so I can output the signal
> waves
>>> on a screen from the pi. Additional information for the pi would also
> be
>>> very helpful.
>>
>>Huh?  A meaningful question may elicit a meaningful answer.
>>
>>What "pulse signal from contact of human skin"?  I'm not even certain
>>that is grammatically correct, much less that it has any possible
>>meaning
> 
>>behind it.
>>
>>There is no such thing as a "frequency pulse" -- what do you really
> mean?
>>
>>"in detail in general" -- which do you want?
>>
>>--
>>
>>Tim Wescott Wescott Design Services http://www.wescottdesign.com
> 
> Tim, I am disappointed,he wants new ECG method

Well, help him out then.  Or, go complain about us on other newsgroups.


-- 
www.wescottdesign.com

On 29.10.15 09:44, Tim Wescott wrote:
> On Wed, 28 Oct 2015 21:10:55 -0500, kaz wrote:
>
>>> On Wed, 28 Oct 2015 19:38:09 -0500, shadowdarkness wrote:
>>>
>>>> So I want to investigate how to process a pulse signal from contact of
>>>> human skin i.e. picking up the frequency pulse from the finger. I need
>>>> the steps on how this works in detail in general and also consider
>> what
>>>> level of amplification, modulation and filtering it needs. I am trying
>>>> to impliment this using a raspberry pi so I can output the signal
>> waves
>>>> on a screen from the pi. Additional information for the pi would also
>> be
>>>> very helpful.
>>>
>>> Huh?  A meaningful question may elicit a meaningful answer.
>>>
>>> What "pulse signal from contact of human skin"?  I'm not even certain
>>> that is grammatically correct, much less that it has any possible
>>> meaning
>>
>>> behind it.
>>>
>>> There is no such thing as a "frequency pulse" -- what do you really
>> mean?
>>>
>>> "in detail in general" -- which do you want?
>>>
>>> --
>>>
>>> Tim Wescott Wescott Design Services http://www.wescottdesign.com
>>
>> Tim, I am disappointed,he wants new ECG method
>
> Well, help him out then.  Or, go complain about us on other newsgroups.


The OP may be after plethysmography, in the way of a clothespin
pulse oximeter. It measures the color density of the finger on
red and infrared and compares the results.

-- 

-TV