From 882e3bb1c298343daf66f705bd4036c98c4f4b9f Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Sun, 14 Apr 2019 21:48:14 +0200
Subject: Switch to 16kHz audio

---
 src/common/includes/Audio/audio_in.h | 4 ++--
 src/common/includes/Audio/tone.h     | 2 --
 src/common/src/Audio/tone.c          | 2 ++
 3 files changed, 4 insertions(+), 4 deletions(-)

(limited to 'src/common')

diff --git a/src/common/includes/Audio/audio_in.h b/src/common/includes/Audio/audio_in.h
index 40482d9..d2e8378 100644
--- a/src/common/includes/Audio/audio_in.h
+++ b/src/common/includes/Audio/audio_in.h
@@ -27,8 +27,8 @@
 #include <stdio.h>
 #include "FreeRTOS.h"
 
-#define AUDIO_IN_RATE 8000
-#define AUDIO_IN_BUF_LEN 400
+#define AUDIO_IN_RATE 16000
+#define AUDIO_IN_BUF_LEN 1600
 
 void audio_in_initialize(void);
 
diff --git a/src/common/includes/Audio/tone.h b/src/common/includes/Audio/tone.h
index 294fe54..f8f4132 100644
--- a/src/common/includes/Audio/tone.h
+++ b/src/common/includes/Audio/tone.h
@@ -30,8 +30,6 @@
 
 #define TONE_BUFFER_LEN AUDIO_IN_BUF_LEN
 
-#define TONE_N 400
-
 struct tone_detector {
     float coef;
     float Q1;
diff --git a/src/common/src/Audio/tone.c b/src/common/src/Audio/tone.c
index 29e2936..0618c8c 100644
--- a/src/common/src/Audio/tone.c
+++ b/src/common/src/Audio/tone.c
@@ -36,6 +36,8 @@
 #include "arm_math.h"
 #endif
 
+#define TONE_N 800
+
 /* DTMF frequencies
  *      COL_1  COL_2  COL_3  COL_A
  *      1209   1336   1477   1633
-- 
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