Baudline

Short description: Signal analyser

baudline

Baudline Signal Analyzer

Developer(s)| SigBlips DSP Engineering
Initial release| September 2000; 25 years ago (2000-09)
Stable release| 1.08 (Jul 21, 2010) [±]
Written in| C
Operating system| FreeBSD,[1] Linux,[2] Mac OS X, Solaris
Type| numerical analysis
License| proprietary subscription[3]
Website| www.baudline.com

The baudline time-frequency browser is a signal analysis tool designed for scientific visualization. It runs on several Unix-like operating systems under the X Window System. Baudline is useful for real-time spectral monitoring, collected signals analysis, generating test signals, making distortion measurements, and playing back audio files.

## Applications

* Acoustic cryptanalysis[4][5][6][7][8]
* Audio codec lossy compression analysis [9][10]
* Audio signal processing
* Bioacoustics research
* Data acquisition (DAQ)
* Gravitational Wave analysis[11][12]
* Infrasound monitoring
* Musical acoustics[13][14][15]
* radar[16][17][18]
* Seismic data processing
* SETI[19][20][21]
* Signal analysis
* Software Defined Radio[22][23]
* Spectral analysis
* Very low frequency (VLF) reception[24]
* WWV frequency measurement[25][26]

## Features

* Spectrogram, Spectrum, Waveform, and Histogram displays
* Fourier, Correlation, and Raster transforms
* SNR, THD, SINAD, ENOB, SFDR distortion measurements
* Channel equalization
* Function generator
* Digital down converter
* Audio playing with real-time DSP effects like speed control, pitch scaling, frequency shifting, matrix surround panning, filtering, and digital gain boost
* Audio recording of multiple channels
* JACK Audio Connection Kit sound server support[27]
* Import AIFF, AU, WAV, FLAC, MP3, Ogg Vorbis, AVI, MOV, and other file formats

## License

The old baudline version comes with no warranty and is free to download. The binaries may be used for any purpose, though no form of redistribution is permitted.[28] The new baudline version is available via a subscription model and site license.[29]

## See also

* Linux audio software
* List of information graphics software
* List of numerical analysis software
* Digital signal processing

## References

1. ↑ "FreshPorts -- audio/baudline". DVL Software Limited. http://www.freshports.org/audio/baudline.
2. ↑ "Linux Online - Application: baudline". Linux Online, Inc.. http://www.linux.org/apps/AppId_8213.html.
3. ↑ "News". SigBlips DSP Engineering. http://www.baudline.com/news.html.
4. ↑ "Acoustic cryptanalysis:On nosy people and noisy machines". Adi Shamir, Eran Tromer. http://people.csail.mit.edu/tromer/acoustic/.
5. ↑ "Acoustic Surveillance of Physically Unmodified PCs". Michael LeMay, Jack Tan. http://seclab.uiuc.edu/pubs/LeMayT06.pdf.
6. ↑ "2IF03 – Seminar IST Overview of Acoustic Side Channel Attacks". Jan de Muijnck-Hughes. http://security1.win.tue.nl/~bskoric/seminar/papers1/MuijnckHughes_acoustic.pdf. [|permanent dead link|dead link}}]
7. ↑ "Compromising Electromagnetic Emanations of Wired and Wireless Keyboards". Martin Vuagnoux, Sylvain Pasini. https://www.usenix.org/events/sec09/tech/full_papers/sec09_attacks.pdf.
8. ↑ "EM-Sniffing". Oswald Berthold. http://www.medienwissenschaft.hu-berlin.de/de/medienwissenschaft/medientheorien/downloads/hausarbeiten/em-sniffer.pdf/at_download/file.
9. ↑ "Audio Compression Codecs". E. Olson. http://baudline.com/solutions/codec/index.html.
10. ↑ "Ogg Vorbis and MP3 Audio Stream charecterization". Ayman Ammoura Franco Carlacci. http://sysdoc.doors.ch/CREATIVE/oggVorbis.pdf.
11. ↑ "coherent WaveBurst Data Display". cWB Team. https://gwburst.gitlab.io/documentation/latest/html/frdisplay.html.
12. ↑ "coherent WaveBurst baudline installation". cWB Team. https://gwburst.gitlab.io/documentation/latest/html/install/baudline.html.
13. ↑ "Analyse van de zangstem: geluiden in beeld". Koen Eneman, Tom Francart. https://perswww.kuleuven.be/~u0023287/reports/zangstemanalyse2.pdf.
14. ↑ Christoph Henkelmann. "Improving the Aesthetic Quality of Realtime Motion Data Sonification". CiteSeerX 10.1.1.67.3546.
15. ↑ "Analizador de un espectro musical". Andrés Jiménez Sánchez, Amaia de Miguel Morate, Javier Villellas Bernal. http://eprints.ucm.es/9016/1/TC2005-38.pdf.
16. ↑ "Analyzing radar pulses with baudline and an RTL-SDR". admin at rtl-sdr.com. 12 January 2015. https://www.rtl-sdr.com/analyzing-radar-pulses-baudline-rtl-sdr/.
17. ↑ "Project Soli: RADAR That Fits Inside A Watch". electronicsforu.com. 22 May 2016. https://www.electronicsforu.com/technology-trends/google-just-put-a-radar-inside-a-watch.
18. ↑ "Wave hello to Soli touchless interactions". Google ATAP. https://atap.google.com/soli/.
19. ↑ "setiQuest Kepler-Exo4 1420 MHz". baudline. 24 April 2010. http://baudline.blogspot.com/2010/04/setiquest-kepler-exo4-1420-mhz.html.
20. ↑ "SETI and Kepler-4b". exoplanetology.com. 10 May 2010. http://exoplanetology.blogspot.com/2010/05/kepler-4b-and-seti.html.
21. ↑ "Exoplanetology Kepler 4b and SETI". portaltotheuniverse.org. http://www.portaltotheuniverse.org/blogs/posts/view/56588/.
22. ↑ "My First Software Defined Radio (SDR) Receiver - 2nd Section Downconverter". Juan Domenech Fernandez. http://www.domenech.org/homebrew-sdr/receiver-2.htm.
23. ↑ "GNU Radio ist ein freies Toolkit fuer Software Defined Radio". Chaos Computer Club Berlin. https://berlin.ccc.de/wiki/GNU_Radio.
24. ↑ "Segnali radio a bassissima frequenza (VLF)". Tito Dal Canton. http://www.dalcanton.it/tito/esperimenti/lowfreq.
25. ↑ "Techniques for Measuring Frequency Off-the-Air". John Ackermann. http://www.febo.com/time-freq/FMT/technique/index.html.
26. ↑ "Using Baudline for Frequency Measurement". John Ackermann. http://www.febo.com/pages/baudline/.
27. ↑ "FFT visualizing: Ardour". Paul Davis. 20 August 2006. http://ardour.org/node/361#comment-1160.
28. ↑ "Baudline FAQ". SigBlips DSP Engineering. http://www.baudline.com/faq.html.
29. ↑ "Baudline News". SigBlips DSP Engineering. http://www.baudline.com/news.html.

## External links

* User discussion group at Google Groups
* SigBlips DSP Engineering

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