jeffrey samuel
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Actually your question is not quite clear. there are many ways to compare to analog signals based on requirements. For example comparator is used to compare between two analog signals.
I think for your purpose you need to use analog to digital converter (ADC).
using Matlab is a very good idea - there are devices that enable a PC to acquire data using ADCs direct into Matlab or GNU Octave or Labview for analysis. An alternative is to use an embedded system to acquire the data and then transmit it to a PC for analysis (via Ethernet or WiFi or USB). Once you have the algorithms you can implement on a device such as a Microchip dsPIC or a Texas C6000 (depending on complexity).From the present sight, digital signal processing seems to be essential. Most likeley you would want to evaluate suitable algorithms with a tool like Matlab before trying to implement it in a dedicated target hardware (if the latter is intended at all).
The best way is to use ADC and convert these two signals and apply DSP.
But ADC you have to consider quantization noise.
The question is boundless somehow.
From the present sight, digital signal processing seems to be essential. Most likeley you would want to evaluate suitable algorithms with a tool like Matlab before trying to implement it in a dedicated target hardware (if the latter is intended at all).
using Matlab is a very good idea - there are devices that enable a PC to acquire data using ADCs direct into Matlab or GNU Octave or Labview for analysis. An alternative is to use an embedded system to acquire the data and then transmit it to a PC for analysis (via Ethernet or WiFi or USB). Once you have the algorithms you can implement on a device such as a Microchip dsPIC or a Texas C6000 (depending on complexity).
have you looked at any of the DSP libraries, e.g. using Microchip's dsPIC microprocessors
**broken link removed**
e.g. acquire the two signals via ADCs and then do an FFT on them?
you can write your own code (in C++, c#, VB.NET, etc) to do the analysis.so you mean with out computer analysis this is not practically possible
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