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https://github.com/romanz/amodem.git
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remove old scripts
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@@ -1,12 +0,0 @@
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#!/bin/bash
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killall -q aplay arecord
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./scripts/calib.py send &
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SENDER_PID=$!
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echo "Playing audio (PID=${SENDER_PID})..."
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echo "Recording audio (Stop with Ctrl+C)..."
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./scripts/calib.py recv
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echo "Stopping player..."
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kill -INT $SENDER_PID
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@@ -1,57 +0,0 @@
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#!/bin/bash
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set -u
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set -e
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run() {
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echo "SRC $HOST ($DIR): $*" 1>&2
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if [ "$HOST" == "localhost" ]; then
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echo "$*" | bash
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else
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ssh $HOST "cd $DIR; $*"
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fi
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}
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run_src() {
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DIR=${SRC_DIR:-"$PWD"}
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HOST=${SRC_HOST:-localhost}
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run "$*"
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}
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run_dst() {
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DIR=${DST_DIR:-"$PWD"}
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HOST=${DST_HOST:-localhost}
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run "$*"
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}
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TEST_DIR=results
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run_src mkdir -p $TEST_DIR
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run_dst mkdir -p $TEST_DIR
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## generate 1Mbit of random data
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run_src dd if=/dev/urandom of=$TEST_DIR/data.send bs=125kB count=1 status=none
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SRC_HASH=`run_src sha256sum $TEST_DIR/data.send`
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# modulate data into audio file
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run_src "python scripts/send.py -i $TEST_DIR/data.send -o $TEST_DIR/audio.send"
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# stop old recording and start a new one
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run_src killall -q aplay || true
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run_dst killall -q arecord || true
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run_dst "python scripts/wave.py record $TEST_DIR/audio.recv" &
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sleep 1 # let audio.recv be filled
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# play the modulated data
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run_src "python scripts/wave.py play $TEST_DIR/audio.send" &
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# start the receiever
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run_dst "python scripts/recv.py -i $TEST_DIR/audio.recv -o $TEST_DIR/data.recv"
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# stop recording after playing is over
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run_src killall -q aplay || true
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run_dst killall -q arecord || true
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# verify transmittion
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DST_HASH=`run_dst sha256sum $TEST_DIR/data.recv`
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echo -e "$SRC_HASH\n$DST_HASH"
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