From 9ce1b56ee230bb91968a321dc5eda0349cc12c42 Mon Sep 17 00:00:00 2001
From: Zilog80 <rs1729@users.noreply.github.com>
Date: Wed, 2 Dec 2015 14:58:04 +0100
Subject: [PATCH] swap(IQ) <-> conj(IQ)

---
 iq/shift_IQ.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/iq/shift_IQ.c b/iq/shift_IQ.c
index dfde27e..2a5a03f 100644
--- a/iq/shift_IQ.c
+++ b/iq/shift_IQ.c
@@ -155,8 +155,8 @@ int main(int argc, char *argv[]) {
             if (read_csample(fp, &z) == EOF) break;
 
             if (swap) { // swap IQ
-                w = cimag(z) + I*creal(z);  // = cexp(-I*PI/2) * conj(z);
-
+                w = cimag(z) + I*creal(z);  // = cexp(I*PI/2) * conj(z) = I * conj(z);
+                // W(f) = Z(-f); fuer Spiegelung reicht: w = conj(z)
             }
             else { // translate
                 t = (double)sample / sample_rate;