773 Fir_Filter
773 : Fir_Filter
- Author: Bruno Moreira
- Description: A simple FIR filter implementation with UART communication
- GitHub repository
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- Clock: 25000000 Hz
How it works
This proyects is a FIR(Finite Impulse Response) used us a filtter. In this case use typical fixed point aproach and 11 different cofficients with 4 different types to select.It is design to acept digital audio signal into the (ui_in) with 4kHz bandwith. When the signal enter to the system it is proccees by the FIR and sended through the uart_tx.v to get the filltered signal, Implement 4 different fillters: Hight pass Low pass Band pass All pass
How to test
To use the proyect you need to define filtter coeficient by seection them with uio[1] and [2] pins. Also the 8bits input signal, into the ui[1] and [2]
External hardware
No external hardware needed.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Signal to filter[0] | 0 | tx_w |
| 1 | Signal to filter[1] | 0 | filter_sel[0] |
| 2 | Signal to filter[2] | 0 | filter_sel[1] |
| 3 | Signal to filter[3] | 0 | 0 |
| 4 | Signal to filter[4] | 0 | 0 |
| 5 | Signal to filter[5] | 0 | 0 |
| 6 | Signal to filter[6] | 0 | 0 |
| 7 | Signal to filter[7] | 0 | 0 |