/** Multiplies this sample by the multiplier sample */
public void multiply(ComplexSample multiplier) {
float inphase = (inphase() * multiplier.inphase()) - (quadrature() * multiplier.quadrature());
float quadrature =
(quadrature() * multiplier.inphase()) + (inphase() * multiplier.quadrature());
mLeft = inphase;
mRight = quadrature;
}
/** Multiplies both samples returning a new sample with the results */
public static ComplexSample multiply(ComplexSample sample1, ComplexSample sample2) {
float inphase =
(sample1.inphase() * sample2.inphase()) - (sample1.quadrature() * sample2.quadrature());
float quadrature =
(sample1.quadrature() * sample2.inphase()) + (sample1.inphase() * sample2.quadrature());
return new ComplexSample(inphase, quadrature);
}
public static void main(String[] args) {
double angle = Math.PI; // 180 degrees
ComplexSample s1 = new ComplexSample((float) Math.sin(angle), (float) Math.cos(angle));
ComplexSample tap = new ComplexSample(1.0f, -0.1f);
ComplexSample convolved = ComplexSample.multiply(s1, tap);
mLog.debug(
"s: " + s1.toString() + " t: " + tap.toString() + " convolved: " + convolved.toString());
}
public static ComplexSample multiply(ComplexSample sample, Float inphase, Float quadrature) {
float i = (sample.inphase() * inphase) - (sample.quadrature() * quadrature);
float q = (sample.quadrature() * inphase) + (sample.inphase() * quadrature);
return new ComplexSample(i, q);
}
public static ComplexSample multiply(ComplexSample sample, float scalor) {
return new ComplexSample(sample.left() * scalor, sample.right() * scalor);
}
/** Adds the two complex samples returning a new complex sample with the result */
public static ComplexSample subtract(ComplexSample first, ComplexSample second) {
return new ComplexSample(first.left() - second.left(), first.right() - second.right());
}
/** Adds the two complex samples returning a new complex sample with the result */
public static ComplexSample add(ComplexSample first, ComplexSample second) {
return new ComplexSample(first.left() + second.left(), first.right() + second.right());
}
/** Adds the adder sample value to this sample */
public void add(ComplexSample adder) {
mLeft += adder.left();
mRight += adder.right();
}
