From 95eb6fb575b04270ef69a124d3bcd839aaf4f6e5 Mon Sep 17 00:00:00 2001
From: Will Angenent <will.angenent@ntt.eu>
Date: Mon, 14 May 2018 22:44:44 +0100
Subject: [PATCH] Shortened audio attenuation

---
 audio/audio.go   | 4 ++--
 system/system.go | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/audio/audio.go b/audio/audio.go
index b7e1dcd..aa3c9a9 100644
--- a/audio/audio.go
+++ b/audio/audio.go
@@ -82,11 +82,11 @@ func Init() {
 
 func Click() {
 	ForwardToFrameCycle()
-	system.AudioAttenuationCounter = 4000
+	system.AudioAttenuationCounter = 400
 	system.LastAudioValue = ^system.LastAudioValue
 }
 
-func attenuate(sample uint16) uint16 {
+func attenuate(sample int16) int16 {
 	if system.AudioAttenuationCounter == 0 {
 		return 0
 	} else {
diff --git a/system/system.go b/system/system.go
index dc7954a..658eddc 100644
--- a/system/system.go
+++ b/system/system.go
@@ -14,15 +14,15 @@ var (
 	Cycles                  uint64
 	FrameCycles             uint64
 	AudioCycles             uint64
-	AudioChannel            chan uint16
+	AudioChannel            chan int16
+	LastAudioValue          int16
 	LastAudioCycles         uint64
-	LastAudioValue          uint16
 	AudioAttenuationCounter uint64
 )
 
 func Init() {
 	Cycles = 0
-	AudioChannel = make(chan uint16, AudioSampleRate*4) // 1 second
+	AudioChannel = make(chan int16, AudioSampleRate*4) // 1 second
 	LastAudioValue = 0x2000
 }