From 2b2a373b13985b8931f76db52149c910d2dcc9f8 Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Wed, 23 Sep 2020 01:10:24 +0200
Subject: [PATCH] Add FM synthesis

---
 src/sfizz/Voice.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/sfizz/Voice.cpp b/src/sfizz/Voice.cpp
index 8d5479e2..ae49816a 100644
--- a/src/sfizz/Voice.cpp
+++ b/src/sfizz/Voice.cpp
@@ -757,11 +757,15 @@ void sfz::Voice::fillWithGenerator(AudioSpan<float> buffer) noexcept
                 break;
 
             case 1: // PM synthesis
-                return; // Note(jpc): not yet implemented
+                // Note(jpc): not implemented, just do FM instead
+                goto fm_synthesis;
                 break;
 
             case 2: // FM synthesis
-                return; // Note(jpc): not yet implemented
+            fm_synthesis:
+                fill(*detuneSpan, 1.0f);
+                multiplyAdd<float>(*modulatorSpan, *frequencies, *frequencies);
+                oscCar.processModulated(frequencies->data(), detuneSpan->data(), tempSpan->data(), buffer.getNumFrames());
                 break;
             }