From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Fri, 28 Apr 2006 12:08:14 +0000 (+0000)
Subject: Fix an off-by-one in the undertone detection.
X-Git-Url: https://git.sesse.net/?p=pitch;a=commitdiff_plain;h=1a261eee89e163b53a334eeb57850f16d476c2df

Fix an off-by-one in the undertone detection.
---

diff --git a/pitch.cpp b/pitch.cpp
index 8aff148..91afda5 100644
--- a/pitch.cpp
+++ b/pitch.cpp
@@ -225,9 +225,9 @@ std::pair<double, double> find_peak(double *in, unsigned num_samples)
 			best_bin /= i;
 
 			// consider sliding one bin up or down
-			if (best_bin > 0 && in[best_bin - 1] > in[best_bin] && in[best_bin - 1] > in[best_bin - 2]) {
+			if (best_bin > 1 && in[best_bin - 1] > in[best_bin] && in[best_bin - 1] > in[best_bin - 2]) {
 				--best_bin;
-			} else if (best_bin < num_samples / 2 && in[best_bin + 1] > in[best_bin] && in[best_bin + 1] > in[best_bin + 2]) {
+			} else if (best_bin < num_samples / 2 - 1 && in[best_bin + 1] > in[best_bin] && in[best_bin + 1] > in[best_bin + 2]) {
 				++best_bin;
 			}