Rename interpretor to interpreter.

[Faustine.git] / interpreter / preprocessor / faust-0.9.47mr3 / benchmark / rms.dsp

diff --git a/interpreter/preprocessor/faust-0.9.47mr3/benchmark/rms.dsp b/interpreter/preprocessor/faust-0.9.47mr3/benchmark/rms.dsp
new file mode 100644 (file)
index 0000000..ac00f06
--- /dev/null
+++ b/interpreter/preprocessor/faust-0.9.47mr3/benchmark/rms.dsp
@@ -0,0 +1,20 @@
+// Root Mean Square of n consecutive samples
+RMS(n) = square : mean(n) : sqrt ;
+
+// the square of a signal
+square(x) = x * x ;
+
+// the mean of n consecutive samples of a signal
+// uses fixpoint to avoid the accumulation of
+// rounding errors 
+mean(n) = float2fix : integrate(n) : fix2float : /(n); 
+
+// the sliding sum of n consecutive samples of a signal
+integrate(n,x) = x - x@n : +~_ ;
+
+// convertion between float and fix point
+float2fix(x) = int(x*(1<<20));      
+fix2float(x) = float(x)/(1<<20);    
+
+// Root Mean Square of 1000 consecutive samples
+process = RMS(1000) ;