I need to build an accurate sensor processing system for our laboratory and I consider to build an digital Lock - In amplifier based on DSP technology.
I am new in the field of the DSP and before dealing with the learning curve of new processor ( SHARC or other ),
I wonder myself if an stereo codec with intergrated mini DSP will not be a solution ?
My problem is that I dont know the capacity of the internal DSP of this kind of codecs :
- is there a way to build an internal sin wave generator for external and internal reference ?
- is there a way to shift a sinus signal by 90° ?
- is there a way to shift dynamicaly a signal (+ - 180 °) ?
So, here after is a slightly modified shematic found on web.
Thank you for your opinion and advices,