Linux Software Map: xpequ

  • Version: 0.2
  • Entered-date: 2007-03-11
  • Description: xwindows based equalizer and FFT display, uses xforms library and headers, libmath, and libpthreads. Equalizer and fft code taken from xine, slightly modified. xpequ can read from a input wave file, correct the frequency response, and write to an output wave file. For example you can use it to remove noise from old tapes. It can also read from one dsp device and write to an other dsp device. Or it can stream via sox. xpequ uses the OSS sound drivers. There also is a voice level control that can be used to only output when audio exceeds some preset level. This can be used to record intermittent conversations or monitor lines, while keeping file sizes small.
  • unpack: To unpack: tar -zxvf xpequ-0.2.tgz cd xpequ-0.2 Then follow the instructions in INSTALL. Documentation is not complete yet.
  • 1: 0.1: First release.
  • 1: 0.1.1: Some code changes, should work better now. Set dsp_stereo in output_init(). Exits if ready in file - to - file mode. FFT and equalize now over full file length. Test info printing to stderr removed. Added wave file play example via /dev/dspX in xpequ -h. Changed input_init to output_init in output_init() reporting. Moved malloc() fft_x and fft_y to main, else idle_cb causes a crash if input device or output device could not be opened.
  • 2: 0.2:
  • options: Added command line options: -a no GUI -d show progress -e filename equalizer settings filename, Added '-' for stdin in -i mode. Added mp3 play example in -h. Strange choice of option characters because it seems xforms does not allow some, those seem to be intercepted. Shifted FFT log display to left, and expanded it to full scale.
  • Keywords: equalizer FFT display voice control mp3 recording.
  • Author: Jan Panteltje
  • Maintained-by:
  • Platforms: LINUX, UNIX
  • Copying-policy: GPL
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