The document describes several labs demonstrating FM-RDS transmission and reception, RadioDNS applications testing, online ETI creation and playback, ETI modulation and transmission over DAB, offline and live DAB slideshows, offline DAB multiplexing, DAB+ encoding, audio processing with DAB+ encoding, and dual radio transmission over DAB and FM using USRP equipment and open source software tools from CRC.

1. CRC­mmbTools
Overview and Demos
Pascal . Charest @ crc.ca
Francois . Lefebvre @ crc.ca
EBU Digital Radio Week
Geneva, February 2012
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2. Lab: FM-RDS Transmission
● Description
● Using the open source tools, build an FM­RDS
transmitter
● Equipment
● Gnuradio
● Gnuradio Companion (GRC)
● USRP
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3. Lab: FM Reception
● Description
● Using the Android Fm TwoO application and the
iPod nano to receive FM­RDS
● Equipment
● Samsung Galaxy
● FM TwoO
● iPod nano
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4. Lab: RadioDNS Apps Testing
● Description
● Configuring FM TwoO to test RadioVIS/EPG
applications
● Equipment
● FM TwoO
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5. Lab: RadioDNS Server
● Description
● Using the radiodns.ca server for multi­users
distribution of RadioVIS/EPG services
● Equipment
● radiodns.ca
● FM TwoO
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6. Lab: Online ETI Creation
● Description
● Generating DAB ETI file with CRC web tools
● Equipment
● mmbtools.crc.ca
● audio file
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8. Lab: ETI File Playing
● Description
● Playing the content of an ETI file without
modulation
● Equipment
● CRC­OpenMokast
● ETI file
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9. Info: CRC-OpenMokast
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10. Lab: ETI Over G.703
● Description
● Sending an ETI file to an external DAB modulator
using G.703
● Equipment
● CRC­EtiStreamer
● ETI file
● (FarSync or Cyclades card)
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11. Lab: ETI Modulation
● Description
● Modulating and transmitting an ETI file
● Equipment
● CRC­DABMOD
● CRC­Dwap
● USRP
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12. Info: CRC-DABMOD
CRC­DABMOD is a DAB software modulator.
It takes an ETI bitream as input and modulates it
to create a baseband digital I/Q signal at any
sample rate. CRC­DABMOD is an open source
software under the GPLv3 license.
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13. Info: CRC-DABMOD
● Features
● Sampling rate: any
● Mode: only mode 2
● Input: ETI file or pipe
● Ouput: digital waveform file/pipe
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14. Info: CRC-Dwap
CRC­Dwap is a generic Digital WAve Player. It
is a Gnuradio python script that communicates
with the USRP. It takes generic PCM samples as
input and sends them to the USRP using the
Gnuradio driver.
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15. Lab: CRC-OpenMokast Rx
● Description
● Using CRC­OpenMokast for receiving live DAB
signal
● Equipment
● CRC­OpenMokast
● Mtech USB DAB receiver
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16. Lab: Offline DAB Slideshow
● Description
● Creating a DAB slideshow using the CRC web
application
● Equipment
● mmbtools.crc.ca
● flickr
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17. Lab: Slideshow Playing
● Description
● Playing slideshow with CRC­OpenMokast and
different hardware receivers
● Equipment
● ETI generated from mmbtools.crc.ca
● CRC­OpenMokast
● CRC­DABMOD / CRC­Dwap / USRP
● DAB receivers
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18. Lab: Live DAB Slideshow
● Description
● Using the mmbTools live CD script, run the
dynamic CRC­SlideShow encoder
● Equipment
● MmbTools live CD script
● CRC­SlideShow
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19. Lab: Offline DAB Multiplex
● Description
● Creating a DAB multiplex from pre­encoded files
for DAB, DAB+, DMB and VisualRadio.
Transmitting over the air this multiplex.
● Equipment
● Pre­encoded multimedia files
● CRC­DABMUX
● CRC­DABMOD
● CRC­DWAP
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20. Info: CRC-DABMUX
CRC­DABMUX is a software multiplexer that
generates an ETI stream from audio and data
streams. Because of its software based
architecture, many typical DAB services can be
generated and multiplexed on a single PC
platform with live or pre­recorded sources. CRC­
DABMUX is an open source software under the
GPLv3 license.
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21. Info: CRC-DABMUX
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22. Info: CRC-DABMUX
● Supported transports
● DAB MPEG 1/2
● DAB+
● DMB
● (enhanced) packet mode
● raw data
● PRBS
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23. Info: CRC-DABMUX
● Supported inputs
● file
● pipe
● TCP
● UDP
● SLIP
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24. Info: CRC-DABMUX
● Supported outputs
● file
● pipe
● G.703 (FarSync, Cyclades)
● TCP
● UDP
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25. Lab: DAB+ file encoding
● Description
● Encoding an audio file to DAB+ with CRC­
DABPLUS
● Equipment
● media file
● CRC­DABPLUS
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26. Info: CRC-DABPLUS
CRC­DABPLUS is an audio encoder that
implements the DAB+ standard. It supports
offline (file) and offline encoding. The
GStreamer multimedia framework is used to get
access to input, ouput and codecs fonctions.
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27. Info: CRC-DABPLUS
● Supported encoding
● DAB+
● AAC core
● HE­AACv1 (SBR)
● HE­AACv2 (SBR+PS)
● Bitrates
● 16­192 kbps
● Sampling rates
● 48 kHz
● (32 kHz)
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28. Info: CRC-DABPLUS
● Supported codecs (transcoding)
● raw input (PCM)
● GStreamer codecs
● any GStreamer codec installed on the system
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29. Info: CRC-DABPLUS
● Supported inputs
● GStreamer inputs
● ALSA driver
● JACK driver
● Pulse audio driver
● file
● network
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30. Info: CRC-DABPLUS
● Supported output
● GStreamer outputs
● file
● pipe
● network
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31. Lab: Audio Processor
● Description
● Using JACK to connect the audio processor
software Stereo Tools and the DAB+ encoder CRC­
DABPLUS
● Equipement
● CRC­DABPLUS
● Stereo Tools
● Qjack control
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32. Lab: DAB+ live encoding
● Description
● Encoding a sound card live capture to DAB+ with
CRC­DABPLUS
● Equipment
● sound card
● CRC­DABPLUS
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33. Lab: Live DAB+ Multiplex
● Description
● Creating a DAB multiplex from live source for
DAB+.
● Equipment
● Audio cards
● CRC­DABPLUS
● CRC­DABMUX / DABMOD / DWAP
● USRP
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34. Lab: DAB+ DLS insertion
● Description
● Inserting DLS to a DAB+ stream encoded with
CRC­DABPLUS
● Equipment
● CRC­DABPLUS
● telnet
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35. Lab: Dual Radio Tx
● Description
● Running digital DAB and analog FM transmission
on the same USRP
● Equipment
● GRC
● CRC­DabMux/CRC­DABMOD/CRC­Dwap
● USRP
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