gistfile1.txt

#!/bin/bash
#
# WIA Broadcast - FreeDV Encoder Cron Job
#
# To be run ~2AM Sunday Morning, to be sure all the required files are in place...
#
# Requirements:
# - freedv_tx and required libs should be in this directory.
# - ffmpeg (available with apt-get, or macports, or homebrew or whatever)
# - wget

# For some reason cron jobs start in the users home directory, so we need to CD first.
#cd /home/darkside/freedv_broadcast/
# Flag to indicate we're running.
touch i_am_running.txt

# Where we get all our news from!
LOCALNEWS="http://nerc.vk5bbs.ampr.org/WIA_Broadcast/local.mp3"
#WIANEWS=$(date +http://www.wia-files.com/podcast/wianews-%Y-%m-%d.mp3)
WIANEWS="http://www.wia-files.com/podcast/wianews-2016-06-26.mp3"


FREEDVMODE="1600"

OUTFILE=$(date +combinednews%Y-%m-%d.freedv$FREEDVMODE)

echo "Removing existing files..."
#rm *.mp3
#rm *.wav
rm *.raw
rm local.*
rm national.*
rm combinednews.*
rm combinednews.freedv$FREEDVMODE.wav

echo "Downloading local news: " $LOCALNEWS
wget -O local.mp3 $LOCALNEWS

echo "Downloading WIA National News: " $WIANEWS
wget -O national.mp3 $WIANEWS

echo "Converting Files to RAW"
# At this point we start compiling a temporary file which we will encode with
# FreeDV in a moment. I'm doing this by decoding our source mp3 files to raw
# and appending them to a file.
ffmpeg -i national.mp3 -f s16le -acodec pcm_s16le -ar 8000 -ac 1 - >> temp.raw
ffmpeg -i local.mp3 -f s16le -acodec pcm_s16le -ar 8000 -ac 1 - >> temp.raw
ffmpeg -i wrapup_2.wav -f s16le -acodec pcm_s16le -ar 8000 -ac 1 - >> temp.raw

# The preamble file was created 'by hand', and forms the start of the final output file.
ffmpeg -i preamble.wav -f s16le -acodec pcm_s16le -ar 8000 -ac 1 $OUTFILE.raw

# High pass filter, to hopefully improve audio quality.
sox -r 8000 -s -2 temp.raw -r 8000 -s -2 -t raw temp_hp.raw highpass 300

echo "Encoding as FreeDV " $FREEDVMODE
echo "Encoding National News"
./freedv_tx $FREEDVMODE temp_hp.raw - >> $OUTFILE.raw

echo "Producing Final Wave File..."
# Use ffmpeg to add the wav headers to the raw file.
ffmpeg -f s16le -acodec pcm_s16le -ar 8000 -i $OUTFILE.raw $OUTFILE.wav

echo "Uploading..."
# SCP file to a web-visible server.
scp $OUTFILE.wav youruser@yourserver:~/www/temp/freedv/