Removed defines that were not used.

pull/13/head
boblark 2 years ago
parent 5c47e50066
commit ef373e3e6d
  1. 22
      AudioFilterConvolution_F32.cpp
  2. 12
      AudioFilterConvolution_F32.h

@ -51,7 +51,7 @@ void AudioFilterConvolution_F32::impulse(float32_t *FIR_coef)
arm_cfft_f32( &arm_cfft_sR_f32_len1024, FIR_filter_mask, 0, 1);
// for 1st time thru, zero out the last sample buffer to 0
arm_fill_f32(0, last_sample_buffer_L, BUFFER_SIZE *4);
arm_fill_f32(0, last_sample_buffer_L, 128*4);
state = 0;
enabled = 1; //enable audio stream again
@ -79,9 +79,9 @@ void AudioFilterConvolution_F32::update(void)
l++;
}
}
arm_copy_f32 (&buffer[0], &tbuffer[0], BUFFER_SIZE*4);
arm_copy_f32 (&buffer[0], &tbuffer[0], 128*4);
bp = block->data;
for (int i = 0; i < AUDIO_BLOCK_SAMPLES; i++) {
for (int i = 0; i < 128; i++) {
buffer[i] = *bp;
*bp++ = tbuffer[i];
}
@ -92,7 +92,7 @@ void AudioFilterConvolution_F32::update(void)
case 1:
bp = block->data;
for (int i = 0; i < AUDIO_BLOCK_SAMPLES; i++) {
for (int i = 0; i < 128; i++) {
buffer[128+i] = *bp;
*bp++ = tbuffer[i+128];
}
@ -103,7 +103,7 @@ void AudioFilterConvolution_F32::update(void)
case 2:
bp = block->data;
for (int i = 0; i < AUDIO_BLOCK_SAMPLES; i++) {
for (int i = 0; i < 128; i++) {
buffer[256 + i] = *bp;
*bp++ = tbuffer[i+256]; // tbuffer contains results of last FFT/multiply/iFFT processing (convolution filtering)
}
@ -117,7 +117,7 @@ void AudioFilterConvolution_F32::update(void)
case 3:
bp = block->data;
for (int i = 0; i < AUDIO_BLOCK_SAMPLES; i++) {
for (int i = 0; i < 128; i++) {
buffer[384 + i] = *bp;
*bp++ = tbuffer[i + 384]; // tbuffer contains results of last FFT/multiply/iFFT processing (convolution filtering)
}
@ -165,7 +165,7 @@ float AudioFilterConvolution_F32::m_sinc(int m, float fc)
{ // fc is f_cut/(Fsamp/2)
// m is between -M and M step 2
//
float x = m*PIH;
float x = m*PIH_F32;
if(m == 0)
return 1.0f;
else
@ -229,8 +229,8 @@ void AudioFilterConvolution_F32::calc_FIR_coeffs
if(2*ii==nc) continue;
float x =(float)(2*ii - nc)/(float)nc;
float w = Izero(Beta*sqrtf(1.0f - x*x))/izb; // Kaiser window
coeffs[ii-1] = 1.0f/(PIH*(float)(ii-nc/2)) * w ;
//coeffs[2*ii+1] = 1.0f/(PIH*(float)(ii-nc/2)) * w ;
coeffs[ii-1] = 1.0f/(PIH_F32*(float)(ii-nc/2)) * w ;
//coeffs[2*ii+1] = 1.0f/(PIH_F32*(float)(ii-nc/2)) * w ;
}
return; // From Hilbert design
}
@ -249,11 +249,11 @@ void AudioFilterConvolution_F32::calc_FIR_coeffs
}
else if (type==BANDPASS)
{
for(jj=0; jj< nc+1; jj++) coeffs[jj] *= 2.0f*cosf(PIH*(2*jj-nc)*fc);
for(jj=0; jj< nc+1; jj++) coeffs[jj] *= 2.0f*cosf(PIH_F32*(2*jj-nc)*fc);
}
else if (type==BANDREJECT)
{
for(jj=0; jj< nc+1; jj++) coeffs[jj] *= -2.0f*cosf(PIH*(2*jj-nc)*fc);
for(jj=0; jj< nc+1; jj++) coeffs[jj] *= -2.0f*cosf(PIH_F32*(2*jj-nc)*fc);
coeffs[nc/2] += 1;
}
} // END calc_FIR_coef

@ -95,6 +95,8 @@
* See the example TestConvolutionFilter.ino for more inforation on the
* use of this class.
*
* Removed #defines that were not needed. Thanks K7MDL. Bob 6 Mar 2022
*
* ************************************************************ */
#ifndef AudioFilterConvolution_F32_h_
@ -105,10 +107,8 @@
#include <arm_const_structs.h>
#define MAX_NUMCOEF 513
#define TPI 6.28318530717959f
#define PIH 1.57079632679490f
#define FOURPI 2.0 * TPI
#define SIXPI 3.0 * TPI
#define PIH_F32 1.5707963f
#define LOWPASS 0
#define HIGHPASS 1
@ -122,7 +122,7 @@ class AudioFilterConvolution_F32 :
public:
AudioFilterConvolution_F32(void) : AudioStream_F32(1, inputQueueArray_F32) {
fs = AUDIO_SAMPLE_RATE;
//block_size = AUDIO_BLOCK_SAMPLES;
//block_size = 128; // Always
};
AudioFilterConvolution_F32(const AudioSettings_F32 &settings) : AudioStream_F32(1, inputQueueArray_F32) {
// Performs the first initialize
@ -139,7 +139,6 @@ public:
//#define Alternate filter init
private:
#define BUFFER_SIZE 128
float32_t fs;
audio_block_f32_t *inputQueueArray_F32[1];
float32_t *sp_L;
@ -151,7 +150,6 @@ private:
int enabled=0;
float32_t FIR_Coef[MAX_NUMCOEF];
const uint32_t FFT_length = 1024;
// float32_t FIR_coef[2048] __attribute__((aligned(4))); <<<<<<<<<<<<<<<
float32_t FIR_filter_mask[2048] __attribute__((aligned(4)));
float32_t buffer[2048] __attribute__((aligned(4)));
float32_t tbuffer[2048]__attribute__((aligned(4)));

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