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21 lines
944 B
Text
21 lines
944 B
Text
XAnalyser is a program to analyse a stereo audio signal. It has two
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displays:
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Frequency Spectrum
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Using Fast Fourier Transform, the time domain of the signal is
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transformed into the frequency domain, i.e. the amplitude (in
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logarithmic scale) of the audio signal is plotted versus the
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frequency. Either the sum of the left and right channel of the
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audio signal can be shown or both channels simultaneously.
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XY Scope
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Roughly speaking, the audio signal of left channel deflects a
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point horizontally and the right channel vertically (just as the
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beam of a CRT would do). Thus, an audio signal only present on
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the left channel produces a horizontal line, whereas an audio
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signal only present on the right channel produces a vertical
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line. A mono signal produces a 45 degree line. A stereo signal
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creates a wilde pattern (if the phase is correct, predominately
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in the same direction as a mono signal) or may even fill the entire
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scope.
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