You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
23 lines
654 B
23 lines
654 B
1 year ago
|
#ifndef _BASIC_DSPUTILS_H_
|
||
|
|
#define _BASIC_DSPUTILS_H_
|
||
|
|
|
||
|
|
#include <arm_math.h>
|
||
|
|
|
||
|
|
static inline void mix_pwr(float32_t mix, float32_t *wetMix, float32_t *dryMix);
|
||
|
|
static inline void mix_pwr(float32_t mix, float32_t *wetMix, float32_t *dryMix)
|
||
|
|
{
|
||
|
|
// Calculate mix parameters
|
||
|
|
// A cheap mostly energy constant crossfade from SignalSmith Blog
|
||
|
|
// https://signalsmith-audio.co.uk/writing/2021/cheap-energy-crossfade/
|
||
|
|
float32_t x2 = 1.0f - mix;
|
||
|
|
float32_t A = mix*x2;
|
||
|
|
float32_t B = A * (1.0f + 1.4186f * A);
|
||
|
|
float32_t C = B + mix;
|
||
|
|
float32_t D = B + x2;
|
||
|
|
|
||
|
|
*wetMix = C * C;
|
||
|
|
*dryMix = D * D;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // _BASIC_DSPUTILS_H_
|