From e62a9fd140c8dcb2a8e6e93fcf63a50f3a15ef89 Mon Sep 17 00:00:00 2001
From: Samuel ORTION <samuel.ortion@orange.fr>
Date: Sun, 9 May 2021 12:06:59 +0200
Subject: [PATCH] Added all in one python script that convert in Tadarida
 format

---
 split_5s.sh               | 23 +++++++++++------------
 tadarida_preprocessing.py | 24 ++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 12 deletions(-)
 create mode 100755 tadarida_preprocessing.py

diff --git a/split_5s.sh b/split_5s.sh
index ba3b4ca..206b760 100755
--- a/split_5s.sh
+++ b/split_5s.sh
@@ -8,12 +8,11 @@
 
 function usage {
     printf "./$(basename $0) -h                              - -     shows help \n"
-    printf "./$(basename $0) -i input_dir -o output_dir      - -     split long wav into wav 5s wav \n"
+    printf "./$(basename $0) -i input_dir -o output_dir      - -     split long wav into 5s wav \n"
 }
 
 function split {
-    cd $indir
-    for item in `ls ./*.WAV`
+    for item in `ls $indir/*.WAV`
     do
         audio_dur=`sox --i -D $item`
         # Convert float to int
@@ -22,15 +21,14 @@ function split {
         ss=0
         to=5
         for ss in `seq 0 5 $(( $audio_dur - 5 ))`
-        do 
+        do
             to=$(( $ss + 5 ))
             echo "Spliting $item            ($ss/$audio_dur)"
-            ffmpeg -ss $ss -i "$indir/$item" -t $to -c copy "$outdir/$item-$ss.wav"
+            ffmpeg -ss $ss -i $indir/`basename $item` -t $to -c copy $outdir/`basename $item`-$ss.wav
         done
     done
 }
 
-
 optstring=":hi:o:"
 
 # Defaults
@@ -41,29 +39,30 @@ while getopts ${optstring} arg
 do 
     case "${arg}" in
         h)
-            printf "$(basename $0) usage: \n"
+            printf "$( basename $0 ) usage: \n"
             usage
+            exit 0
             ;;
         i) 
             indir="${OPTARG}"
-            # echo "indir: $indir"
+            echo "indir: $indir"
             ;;
         o) 
             outdir="${OPTARG}"
-            # echo "outdir: $outdir"
+            echo "outdir: $outdir"
             ;;
         :)
-            echo "$0: Must supply an argument to -$OPTARG."
+            echo "$( basename $0 ): Must supply an argument to -$OPTARG."
             exit 1
             ;;
         ?)
-            echo "Invalid option: -${OPTARG}."
+            echo "Invalid option: -${arg}."
             echo 
             usage
+            exit 1
             ;;
     esac
 done
-
 if [ ! -d $outdir ];
 then
     mkdir $outdir
diff --git a/tadarida_preprocessing.py b/tadarida_preprocessing.py
new file mode 100755
index 0000000..8013254
--- /dev/null
+++ b/tadarida_preprocessing.py
@@ -0,0 +1,24 @@
+#!/usr/bin/python3
+
+import os
+import soundfile as sf
+
+def exp_rate(insoundfile, outsoundfile, rate_ratio):
+	data, samplerate = sf.read(insoundfile)
+	new_samplerate = int(samplerate * rate_ratio)
+	sf.write(outsoundfile, data, new_samplerate)
+
+vigie_prefix = "Car721035-2021-Pass0-Z2"
+device_prefix = "-AudioMoth-247AA5015FDF286B-"
+prefix = vigie_prefix + device_prefix
+
+indir = "raw"
+outdir = "exp"
+
+files = os.listdir(indir)
+
+for wav in files:
+    insoundfile = os.path.join(indir, wav)
+    outsoundfile = os.path.join(outdir, prefix + wav)
+    exp_rate(insoundfile, outsoundfile, 0.1)
+os.system('split_5s -i exp -o split')