baudline
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Description
Baudline is a time-frequency browser designed for scientific visualization of the spectral domain.  Signal analysis is performed by Fourier, correlation, and raster transforms that create colorful spectrograms with vibrant detail.  Conduct test and measurement experiments with the built in function generator, or play back audio files with a multitude of effects and filters.  The baudline signal analyzer combines fast digital signal processing, versatile high speed displays, and continuous capture tools for hunting down and studying elusive signal characteristics.

Explore, Analyze, and Discover.

 
Applications

 
Features
  • Audio player
    • looping
    • speed control with multirate resampling
    • pitch scaling
    • heterodyning (frequency shifting)
    • 2D matrix surround panning
    • notch, high, and low pass filters
    • digital gain boost
  • File loading
    • file formats: .wav, .aiff, .au, .al, .snd, .voc, .rmd, .pvf, .mp3, ID3, .ogg, .gsm, .sah, .fna, raw, .avi, .mov
    • channels: mono, stereo, ... up to 9 channels
    • data formats: ASCII decimal, A-law, u-law, 1-bit (msb & lsb), 8-bit (signed & unsigned), 16/24/32-bit integer (little & big endian), float, double
    • compression
      • lossless suffixes: .gz, .bz2, .Z, .zip, .flac
      • codecs: ADPCM, GSM, MPEG, Ogg Vorbis
  • Measurements
    • peaks: primary, secondary, delta (Hz dB PSD)
    • fundamental: (Hz dB PSD), auto drift rate, chromatic, periodicity, RPM
    • distortion: SNR, THD, SINAD, ENOB, SFDR
    • power: full, select, noise ratio (dB PSD)
    • system: clips, delta selected, frequency range, cursor time, UTC time

 
Requirements
  • Linux, FreeBSD, Mac OS X, or Solaris operating system
  • x86, x86_64, PPC, S/390, or SPARC CPU architecture
  • X11 server display

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