DAB+ script and infrastructure used for Kanal Plus ensemble in Denmark

Revision as of 11:57, 12 October 2011

Here's the script by Ulrik Brinck of Kanal Plus for local ensemble in Denmark

The ensemble consists of 4 DAB+ programmes with DLS. The full set of CRC mmbTools is used with crc-dabplus for DAB+ encoding, crc-dabmux for multiplexing and crc-dabmod for OFDM modulation.

The hardware setup is made of:

• Intel Core i7-2600 4x3.40Ghz PC running Ubuntu Desktop 11.04, 32 bit version
• 2 AudioScience ASI5042 soundcards
• Ettus USRP1 with WBX daughterboard
• Power amplifier from Res-Ingenium, Italy
• Cavity filter from Telmec, Italy
• Antenna from vhfteknik.se, Sweden

Pictures from the setup with PC, amplifier, antenna (pics by Niels Dreijer)

Script

#!/bin/sh

DABPLUS=crc-dabplus

killall CRC-DabMux
killall CRC-DabMod
killall CRC-Dwap.py
killall $DABPLUS
killall mbuffer

sleep 3

rm -f fifoer/fifo*

for id in 0 1 2 3 4 5 6 7 8; do
    [ -e fifo$id ] || mkfifo fifoer/fifo$id
done

CRC-DabMux -c 0xE1 -i 0x9101 -L "NivaaDAB" -l "NivaaDAB" \
  -F "diverse/testcd.dab" -b 64 -S -i 0x9101 -y 0 -L "Forsoegskanal" -l "Forsoeg" -C \
  -F fifoer/fifo1 -k -b 144 -S -i 0x9102 -y 27 -L "Retro-Radio" -l "Retro" -C \
  -F fifoer/fifo2 -k -b 144 -S -i 0x9103 -y 10 -L "Kanal Plus 90" -l "Plus 90" -C \
  -F fifoer/fifo3 -k -b 88 -S -i 0x9104 -y 9 -L "US Radio" -l "US Radio" -C \
  -O fifo:///dev/stdout | \
crc-dabmod -g2 -r3200000 -c128000000 | \
mbuffer -m 32m -P 25 | \
crc-dwap.py -r3200000 -f204640000 -g-14 -u &

sleep 3

$DABPLUS -g -i card://hw:3,0,0 -b 144 -d tcpserver://:49102 -p 28 -t dls | mbuffer -m 100k -P 100 > fifoer/fifo1 &
$DABPLUS -g -i card://hw:2,0,0 -b 144 -d tcpserver://:49103 -p 28 -t dls | mbuffer -m 100k -P 100 > fifoer/fifo2 &
$DABPLUS -g -i card://hw:2,0,3 -b 88 -d tcpserver://:49104 -p 28 -t dls | mbuffer -m 100k -P 100 > fifoer/fifo3 &

wait