WaveWarp 2.0 Component
      
Displays and Scopes:
Functional Description
Real-time digital readout of the rms amplitude of the input audio signal.
For stereo signals, left and right levels are displayed separately.
NOTE on signal range:
in WaveWarp, the adopted convention is that all audio
signals are mapped on to the (floating-point) amplitude range from -1 to 1,
which corresponds approximately to an rms value of 0.707
(only an exact correspondance for a pure sine wave). Any signal outside this range will,
by definition, be digitally clipped.
NOTE on the issue of resolution of the digital representation: once a numerical range has been established for a
given digital system, the A/D conversion maps the analog signal on to a fixed number of digital values over the established
range. For example, in WaveWarp, the adopted (floating point) range of -1 to 1 contains 256 discrete values for an 8-bit
digital signal, 65536 discrete values for a 16-bit quantised digital signal, 1048576 discrete values for a 20-bit
quantised digital signal, 16777216 discrete values for a 24-bit quantised digital signal, and 4294967296 discrete values for
a 32-bit quantised digital signal. Hence the accuracy of the digital representation increases with the number of bits in the
quantised representation., even though the adopted amplitude range of -1:1 is used for all representations. Furthermore,
WaveWarp uses 32-bit representation in all its internal calculations, so very high accuracy (low noise) is maintained even
for 24-bit audio files.
Algorithm
The rms values are averaged over a duration of 20 ms (which is approximately
the refresh rate of the display).
Signal Implementations
| Audio signals | Control signals | Description |
|---|
| Single input mono | n/a | Displays the rms amplitude of the input mono audio signal |
| Single input stereo | n/a | Displays the rms amplitudes of the input stereo audio signal channels |
Related components:
Example DrawingBoards illustrating usage:
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