![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
V001. 2017_11_30 10:21 Working code from Tuesday's lab session.
Fork of 2017_11_28_ELEC347_Coursework by
DSP Coursework ELEC347 2017-2018 Group members: Matthew Thewsey, Thomas Morris, Samuel Waggett, Christopher Hills .
Filter.hpp@0:d39a06ca6bf1, 2017-11-23 (annotated)
- Committer:
- mwthewsey
- Date:
- Thu Nov 23 10:41:18 2017 +0000
- Revision:
- 0:d39a06ca6bf1
- Child:
- 1:b088b771a591
Initial publish. (not working);
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mwthewsey | 0:d39a06ca6bf1 | 1 | //#define Fs 35000 //Frequency of Sample Rate in Hz |
mwthewsey | 0:d39a06ca6bf1 | 2 | //#define N 5 //Number of Nodes N |
mwthewsey | 0:d39a06ca6bf1 | 3 | |
mwthewsey | 0:d39a06ca6bf1 | 4 | class FILTER |
mwthewsey | 0:d39a06ca6bf1 | 5 | { |
mwthewsey | 0:d39a06ca6bf1 | 6 | private: |
mwthewsey | 0:d39a06ca6bf1 | 7 | // calculate_equation();//calculated the value of the equation |
mwthewsey | 0:d39a06ca6bf1 | 8 | |
mwthewsey | 0:d39a06ca6bf1 | 9 | //Can be interrupt driven |
mwthewsey | 0:d39a06ca6bf1 | 10 | int _Fs; |
mwthewsey | 0:d39a06ca6bf1 | 11 | int _Fo; |
mwthewsey | 0:d39a06ca6bf1 | 12 | int _Boost; |
mwthewsey | 0:d39a06ca6bf1 | 13 | int _Q; |
mwthewsey | 0:d39a06ca6bf1 | 14 | |
mwthewsey | 0:d39a06ca6bf1 | 15 | float FilterOutput; |
mwthewsey | 0:d39a06ca6bf1 | 16 | float _centreTap; //internal node of filter |
mwthewsey | 0:d39a06ca6bf1 | 17 | float _b0; |
mwthewsey | 0:d39a06ca6bf1 | 18 | float _b1; |
mwthewsey | 0:d39a06ca6bf1 | 19 | float _b2; |
mwthewsey | 0:d39a06ca6bf1 | 20 | float _b3; |
mwthewsey | 0:d39a06ca6bf1 | 21 | float _b4; |
mwthewsey | 0:d39a06ca6bf1 | 22 | |
mwthewsey | 0:d39a06ca6bf1 | 23 | // A - Denominator coefficients |
mwthewsey | 0:d39a06ca6bf1 | 24 | float _a0; |
mwthewsey | 0:d39a06ca6bf1 | 25 | float _a1; |
mwthewsey | 0:d39a06ca6bf1 | 26 | float _a2; |
mwthewsey | 0:d39a06ca6bf1 | 27 | float _a3; |
mwthewsey | 0:d39a06ca6bf1 | 28 | float _a4; |
mwthewsey | 0:d39a06ca6bf1 | 29 | |
mwthewsey | 0:d39a06ca6bf1 | 30 | float _G; |
mwthewsey | 0:d39a06ca6bf1 | 31 | float _k; |
mwthewsey | 0:d39a06ca6bf1 | 32 | float _Wo; |
mwthewsey | 0:d39a06ca6bf1 | 33 | |
mwthewsey | 0:d39a06ca6bf1 | 34 | float _xn; //this value is the input value |
mwthewsey | 0:d39a06ca6bf1 | 35 | float _xnm1; |
mwthewsey | 0:d39a06ca6bf1 | 36 | float _xnm2; |
mwthewsey | 0:d39a06ca6bf1 | 37 | float _xnm3; |
mwthewsey | 0:d39a06ca6bf1 | 38 | float _xnm4; |
mwthewsey | 0:d39a06ca6bf1 | 39 | |
mwthewsey | 0:d39a06ca6bf1 | 40 | float _yn; |
mwthewsey | 0:d39a06ca6bf1 | 41 | float _ynm1; |
mwthewsey | 0:d39a06ca6bf1 | 42 | float _ynm2; |
mwthewsey | 0:d39a06ca6bf1 | 43 | float _ynm3; |
mwthewsey | 0:d39a06ca6bf1 | 44 | float _ynm4; |
mwthewsey | 0:d39a06ca6bf1 | 45 | |
mwthewsey | 0:d39a06ca6bf1 | 46 | |
mwthewsey | 0:d39a06ca6bf1 | 47 | public: |
mwthewsey | 0:d39a06ca6bf1 | 48 | FILTER(int Fs, int Fo, int Boost, int Q); //Constuctor |
mwthewsey | 0:d39a06ca6bf1 | 49 | ~FILTER(); //deConstuctor |
mwthewsey | 0:d39a06ca6bf1 | 50 | |
mwthewsey | 0:d39a06ca6bf1 | 51 | //setters |
mwthewsey | 0:d39a06ca6bf1 | 52 | void setvalue(int RAW_input); //xn sample input |
mwthewsey | 0:d39a06ca6bf1 | 53 | |
mwthewsey | 0:d39a06ca6bf1 | 54 | //getters |
mwthewsey | 0:d39a06ca6bf1 | 55 | float getvalue(void); //returns yn |
mwthewsey | 0:d39a06ca6bf1 | 56 | |
mwthewsey | 0:d39a06ca6bf1 | 57 | }; |
mwthewsey | 0:d39a06ca6bf1 | 58 | |
mwthewsey | 0:d39a06ca6bf1 | 59 |