void processAudio(AudioInputBuffer &input, AudioOutputBuffer &output){
int size = input.getSize();
float gain = getParameterValue(PARAMETER_A);
float* buf = input.getFloats();
for(int i=0; i<size; ++i)
buf[i] = gain*buf[i];
output.setFloats(buf);
}
void processAudio(AudioInputBuffer &input, AudioOutputBuffer &output){
int size = input.getSize();
float* buf = input.getFloats();
output.setFloats(buf);
}