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Diffstat (limited to 'audio/xanalyser/pkg-descr')
| -rw-r--r-- | audio/xanalyser/pkg-descr | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/audio/xanalyser/pkg-descr b/audio/xanalyser/pkg-descr new file mode 100644 index 000000000000..e8ef130c6a7b --- /dev/null +++ b/audio/xanalyser/pkg-descr @@ -0,0 +1,20 @@ +XAnalyser is a program to analyse a stereo audio signal. It has two displays: + +Frequency Spectrum +Using Fast Fourier Transform, the time domain of the signal is transformed into +the frequency domain, i.e. the amplitude (in logarithmic scale) of the +audio signal is plotted versus the frequency. Either the sum of the +left and right channel of the audio signal can be shown or both +channels simultaneously. + +XY Scope +Roughly speaking, the audio signal of left channel deflects a point +horizontally and the right channel vertically (just as the beam of a CRT +would do). Thus, an audio signal only present on the left channel produces +a horizontal line, whereas an audio signal only present on the right channel +produces a vertical line. A mono signal produces a 45 degree line. +A stereo signal creates a wilde pattern (if the phase is correct, +predominately in the same direction as a mono signal) or may even fill +the entire scope. + +WWW: http://arvin.schnell-web.net/xanalyser/ |