simple sine oscillator without using sin1()

[infuzion]

Here is a three line recursive quadrature oscillator. ..

Code: Select all

streamin k1;   // -tan(omega/2/SR)
streamin k2;   // sin(omega/SR)
streamout x;   // sin(omega*t)
streamout y;   // cos(omega*t)
float tmp;
stage(0)
  {
  x = 0;
  y = 1;
  }
stage(2)
  {
  tmp = y + k1*x;
  x   = x + k2*tmp;
  y   = tmp + k1*x;
  }


...I am attaching an OSM with optimized ASM

I have used this as an example: viewtopic.php?f=10&t=10728&start=41
Not sure if this is your latest version; I am confused by this whole thread anyway.

[aaron77]

Yes you can solve it by adding a sin1 cos 1. This will produce a greater modulation.