71 lines
3.0 KiB
C
71 lines
3.0 KiB
C
/**
|
|
* Copyright 2022 Colin Lam, Ploopy Corporation
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "user.h"
|
|
#include "bqf.h"
|
|
#include "run.h"
|
|
|
|
/*****************************************************************************
|
|
* Here is where your digital signal processing journey begins. Follow this
|
|
* guide, and don't forget any steps!
|
|
*
|
|
* 1. Go to user.h and change FILTER_STAGES to the number of filter stages you
|
|
* want.
|
|
* 2. Define the filters that you want to use. Check out "bqf.c" for a
|
|
* complete list of what they are and how they work. Using those filters, you
|
|
* can create ANY digital signal shape you want. Anything you can dream of.
|
|
* 3. You're done! Enjoy the sounds of anything you want.
|
|
****************************************************************************/
|
|
|
|
void define_filters() {
|
|
// First filter.
|
|
bqf_memreset(&bqf_filters_mem_left[0]);
|
|
bqf_memreset(&bqf_filters_mem_right[0]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 38.0, -22.0, 0.9, &bqf_filters_left[0]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 38.0, -22.0, 0.9, &bqf_filters_right[0]);
|
|
|
|
// Second filter.
|
|
bqf_memreset(&bqf_filters_mem_left[1]);
|
|
bqf_memreset(&bqf_filters_mem_right[1]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 430.0, 6.0, 3.5, &bqf_filters_left[1]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 430.0, 6.0, 3.5, &bqf_filters_right[1]);
|
|
|
|
// Third filter.
|
|
bqf_memreset(&bqf_filters_mem_left[2]);
|
|
bqf_memreset(&bqf_filters_mem_right[2]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 2200.0, 7.0, 4.0, &bqf_filters_left[2]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 2200.0, 7.0, 4.0, &bqf_filters_right[2]);
|
|
|
|
// Fourth filter.
|
|
bqf_memreset(&bqf_filters_mem_left[3]);
|
|
bqf_memreset(&bqf_filters_mem_right[3]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 3500.0, -5.0, 2.0, &bqf_filters_left[3]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 3500.0, -5.0, 2.0, &bqf_filters_right[3]);
|
|
|
|
// Fifth filter.
|
|
bqf_memreset(&bqf_filters_mem_left[4]);
|
|
bqf_memreset(&bqf_filters_mem_right[4]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 6800.0, -6.0, 3.0, &bqf_filters_left[4]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 6800.0, -6.0, 3.0, &bqf_filters_right[4]);
|
|
|
|
// Sixth filter.
|
|
bqf_memreset(&bqf_filters_mem_left[5]);
|
|
bqf_memreset(&bqf_filters_mem_right[5]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 9200.0, 3.0, 4.0, &bqf_filters_left[5]);
|
|
bqf_peaking_config(SAMPLING_FREQ, 9200.0, 3.0, 4.0, &bqf_filters_right[5]);
|
|
}
|