[admin]

Q:
How can I work with internal frame size different from NU-Tech frame size?


A:
WORK_BUFFESIZE is internal frame size.
The entire structure has a latency of WORK_BUFFESIZE samples.

C code:

Code:

double InputBuffer[WORK_BUFFESIZE]; double OutputBuffer[WORK_BUFFESIZE]; // vectors for OLS example double WorkBuffer[2*WORK_BUFFESIZE]; double InputBufferOld[WORK_BUFFESIZE]; .... int __stdcall PlugIn::LEPlugin_Process(PinType **Input,PinType **Output,LPVOID ExtraInfo) {    int nSample;    while(index_i < Input[0]->DataLen)    {       nSample = min( WORK_BUFFESIZE - index_j, Input[0]->DataLen-index_i );       memcpy( &InputBuffer[index_j], &((double*)Input[0]->DataBuffer)[index_i], nSample*sizeof(double) );       memcpy( &((double*)Output[0]->DataBuffer)[index_i], &OutputBuffer[index_j], nSample*sizeof(double) );       index_i += nSample;       index_j += nSample;                if(index_j == WORK_BUFFESIZE)       {          index_j = 0;          ....          // EXAMPLE with 50% OVERLAP-and-SAVE STRUCTURE and FREQUENCY FILTERING          memcpy( WorkBuffer, InputBufferOld, WORK_BUFFESIZE*sizeof(double));          memcpy( &WorkBuffer[WORK_BUFFESIZE], InputBuffer, WORK_BUFFESIZE*sizeof(double));          memcpy( InputBufferOld, InputBuffer, WORK_BUFFESIZE*sizeof(double));                   // FFT          ....          // FREQUENCY FILTERING          ....          // IFFT          ....          memcpy( OutputBuffer, &WorkBuffer[WORK_BUFFESIZE], WORK_BUFFESIZE*sizeof(double));       }    }    index_i=0;    return COMPLETED; } void __stdcall PlugIn::LEPlugin_Init() {    ....    index_j = 0;    index_i = 0;    ... }

_________________
The NU-Tech Team