mirror of
https://github.com/n5ac/smartsdr-dsp.git
synced 2025-12-06 03:01:59 +01:00
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
|
/* *****************************************************************************
|
||
|
|
* resampler.h 2014 AUG 23
|
||
|
|
*
|
||
|
|
* Upsampler and downsampler by integer 3
|
||
|
|
* for translation to/from 8 ksps from/to 24 ksps
|
||
|
|
*
|
||
|
|
* Includes 4 kHz Low Pass filter in each instance
|
||
|
|
*
|
||
|
|
* Derived from code released by David Rowe as part of FreeDV/CODEC2 project
|
||
|
|
* Adapted by Graham / KE9H
|
||
|
|
*
|
||
|
|
* *****************************************************************************
|
||
|
|
*
|
||
|
|
* Copyright (C) 2014 FlexRadio Systems.
|
||
|
|
* 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/>.
|
||
|
|
*
|
||
|
|
**************************************************************************** */
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef RESAMPLER_H_
|
||
|
|
#define RESAMPLER_H_
|
||
|
|
|
||
|
|
|
||
|
|
#define RESAMPLES 384 // Must be divisible by 3
|
||
|
|
|
||
|
|
void fdmdv_8_to_24(float out24k[], float in8k[], int n);
|
||
|
|
void fdmdv_24_to_8(float out8k[], float in24k[], int n);
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* RESAMPLER_H_ */
|
||
|
|
|
||
|
|
// EoF =====-----
|
||
|
|
|