From 338486338215add02c7aba0e2ddcdb2094417c78 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Thu, 1 Jan 2015 23:19:16 -0800
Subject: [PATCH] GBA Audio: Fix GB audio channels being too quiet

---
 CHANGES             | 1 +
 src/gba/gba-audio.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 8c1096ff9..7ddad43b3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -38,6 +38,7 @@ Bugfixes:
  - GBA Video: Fix window interactions with 16-color mode 0 mosaic
  - GBA Video: Fix sprite boundary conditions with mosaic
  - Video: Fix FFmpeg crashing when the file extension is wrong
+ - GBA Audio: Fix GB audio channels being too quiet (fixes #159)
 Misc:
  - Qt: Disable sync to video by default
  - GBA: Exit cleanly on FATAL if the port supports it
diff --git a/src/gba/gba-audio.c b/src/gba/gba-audio.c
index 2ea6cc971..99cb23277 100644
--- a/src/gba/gba-audio.c
+++ b/src/gba/gba-audio.c
@@ -744,7 +744,7 @@ static int _applyBias(struct GBAAudio* audio, int sample) {
 static void _sample(struct GBAAudio* audio) {
 	int16_t sampleLeft = 0;
 	int16_t sampleRight = 0;
-	int psgShift = 6 - audio->volume;
+	int psgShift = 5 - audio->volume;
 
 	if (audio->ch1Left) {
 		sampleLeft += audio->ch1.sample;