I am a novice using the PADK board based on 6727, I want to implement a FIR
filter to get the Hilbert Transform of the input signal, the coefficients are
obtained by MATLAB. The C codes in the CCS is as follows,
but the output wave have discontinuity points every several cycles seen from the
oscilloscope(the picture cannot be attached). The DAC buffer is set as int
dmaxDacBuffer[PINGPONG][STEREO][NUM_CHANNEL][FRAME_SIZE], where FRAME_SIZE is
80, PINGPONG is 2, STEREO is 2, NUM_CHANNEL is 4.
So I am confused about this phenomenon, can anyone help me. Thanks!
float dly[NUM_COEFFS-1+FRAME_SIZE]; //NUM_COEFFS == 50
float OutL = 0;
float sin_table[24] = {
#include "sin_table_sampling192kHz_carrier40kHz_24elements.txt"
};
float cos_table[24] = {
#include "cos_table_sampling192kHz_carrier40kHz_24elements.txt"
};
void Process(void)
{
int i,j;
for(i=0,j=NUM_COEFFS-1; i
{
dly[j] = processBufInL[i];
}
for (i=0; i
{
for (j=0; j
{
OutL += A[j]*delay[i+j];
}
processBufOutL[i] = OutL;
OutL = 0;
}
for (i=0,j=FRAME_SIZE; i
{
dly[i] = dly[j];
}
}
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