first pass at test script

Author: drowe67

script/test_2020x.sh

@@ -0,0 +1,46 @@
+#!/bin/bash -x
+# test_2020x.sh
+# David Rowe Feb 2022
+#
+# Script to support testing experimental 2020A and 2020B modes and 700E control.
+
+CODEC2_PATH=$HOME/codec2
+PATH=$PATH:$CODEC2_PATH/build_linux/src:$CODEC2_PATH/build_linux/misc
+FADING_DIR=$CODEC2_PATH/build_linux/unittest
+No_AWGN=-20
+No_Multipath=-25
+
+function run_sim() {
+    fullfile=$1
+    filename=$(basename -- "$fullfile")
+    extension="${filename##*.}"
+    filename="${filename%.*}"
+    mode=$2
+    if [ "$mode" == "700E" ] || [ "$mode" == "700D" ]; then
+        rateHz=8000
+    else
+        rateHz=16000
+    fi
+    clip=$3
+    if [ "$clip" == "clip" ]; then
+        clipflag=1
+    else
+        clipflag=0
+    fi       
+    channel=$4
+    if [ "$channel" == "awgn" ]; then
+        channel_opt=""
+        No=$No_AWGN
+    else
+        channel_opt='--'${channel}
+        No=$No_Multipath
+    fi
+    
+    freedv_tx ${mode} ${fullfile} - --clip ${clipflag} | \
+    ch - - --No $No ${channel_opt} --fading_dir ${FADING_DIR} | \
+    freedv_rx ${mode} - - | \
+    sox -t .s16 -r ${rateHz} -c 1 - ${filename}_${mode}_${clip}_${channel}.wav
+}
+
+run_sim ~/LPCNet/wav/peter.wav 2020 noclip awgn
+run_sim ~/codec2/wav/big_dog.wav 700E clip mpp