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fb16dfecae
Commit b7f05445c0 has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
19 lines
931 B
Plaintext
19 lines
931 B
Plaintext
XAnalyser is a program to analyse a stereo audio signal. It has two displays:
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Frequency Spectrum
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Using Fast Fourier Transform, the time domain of the signal is transformed into
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the frequency domain, i.e. the amplitude (in logarithmic scale) of the
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audio signal is plotted versus the frequency. Either the sum of the
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left and right channel of the audio signal can be shown or both
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channels simultaneously.
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XY Scope
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Roughly speaking, the audio signal of left channel deflects a point
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horizontally and the right channel vertically (just as the beam of a CRT
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would do). Thus, an audio signal only present on the left channel produces
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a horizontal line, whereas an audio signal only present on the right channel
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produces a vertical line. A mono signal produces a 45 degree line.
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A stereo signal creates a wilde pattern (if the phase is correct,
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predominately in the same direction as a mono signal) or may even fill
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the entire scope.
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