From ef2d39b3af1f55094ddf0e3411d2ee3530d7cfb6 Mon Sep 17 00:00:00 2001
From: Chris Cannam <cannam@all-day-breakfast.com>
Date: Mon, 6 Jun 2022 17:50:22 +0100
Subject: [PATCH] Or is this the right thing? I'm having trouble deciding

---
 src/finer/R3StretcherImpl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/finer/R3StretcherImpl.cpp b/src/finer/R3StretcherImpl.cpp
index bc68736..9783b43 100644
--- a/src/finer/R3StretcherImpl.cpp
+++ b/src/finer/R3StretcherImpl.cpp
@@ -767,7 +767,7 @@ R3StretcherImpl::synthesiseChannel(int c, int outhop)
         
         int lowBin = int(floor(fftSize * band.f0 / m_parameters.sampleRate));
         int highBin = int(floor(fftSize * band.f1 / m_parameters.sampleRate));
-        if (highBin % 2 == 1) --highBin;
+        if (highBin % 2 == 0 && highBin > 0) --highBin;
 
         for (int i = 0; i < lowBin; ++i) {
             scale->mag[i] = 0.0;