INPUT CLIP
Ctrl 1
Frequency (no input)
The diagram shows what range
of frequencies each 'voice' may cover. However this is the fundamental
pitch of each note and does not reflect the harmonic overtones.
Audio f-slip (Min:
0 Max: 20000 Default: 0)
Frequency Scale
(Min: 1.0 Max: 1000.0 Default: 10.0)
Minimum Frequency
1 - 11 (Min: 0.0 Max: 20000.0) Maximum Frequency
1
- 11 (Min: 0.0 Max: 20000.0) These set the frequency bands used to
generate the 11 channel amplitudes. The bands are shown in the overlay
beneath the spectrum window, and can also be adjusted from the overlay.
The amplitude result is an average of the spectrum values shown for the
frequency range.
Spectrum Gain (Min:
0.01 Max: 10.0 Default: 0.2)
Rectangular/Hamming/Hanning/Bartlett/Blackman(Default:
Rectangular)
Ctrl 2
Load Audio File
IN Frame
Frame rate 24 fps/25 fps/30
fps non-drop/30 fps drop frame (Default: 25 fps)
Save File Name
Note: it is the selection
process from the pop-up list which activates the saving to file. You must
re-select to save the same channel again.
Load Amplitude 1 - 11
TRANSFERRING CHANNEL DATA
Note: Until you have a licence
from SpeedSix for this Monster the channels will always default to the same value
when you process the sequence.
Copying channel data between
sparks is a different matter. Unfortunately it does not work directly yet
due to API stuff. The usual. This is why the Save amplitude facility
has been added. The channel data is saved to disk and then on Ctrl4
of all the SpeedSix.Monsters in version 3.0 onwards, you will fine a load channel
data button. This will load in data saved in SpeedSix.AiffExtract. You can then
scale, invert, refine the AiffExtract data, copy it and paste it to the
desired animation channel of the current Monster. If your current set of
SpeedSix Monsters do not have the Ctrl4 option please mail tessa@five-d.com
for the latest release.
HELP gets you here!
OVERLAYS
Scale marks = vertical white
lines.
This page selects the frequency
bands used to generate the channel amplitudes in the channel editor.
Display only, showing the
frequency corresponding to the cursor position in spectrum display result
(image area normally) and may help picking out interesting frequencies.
The audio frame slip is
the offset, in video frames, into the audio file.
Frequency Offset
(Min: -1000.0 Max: 1000.0 Default: 0.0)
These controls set the range
of the channel amplitudes generated (but don't affect the spectrum display).
If you are going to use the copy and paste facility to transfer channel
data to Action you will want to prescale the channel amplitudes
to the range expected in Action. If you are going to save the data
to disk for use within another SpeedSix Monster, you should not change the default
settings.
Spectrum Scale (Min:
0.0 Max: 1000.0 Default: 200.0)
Scaling factors for the
spectrum output and hence channel amplitudes. The output is multiplied
by the gain factor and then raised to the power of the scale factor. Adjust
these if it's difficult to pick out the peaks in the spectrum display.
Different windowing functions
can be used to pre-process the audio to compensate for inaccuracies caused
by splitting the audio waveform into windows for processing. It is best
to experiment to find the window most suitable for the selected audio.
Rectangular does no pre-processing.
Audio File selection and
the saving of channel data.
Click here to open the file
browser allowing an audio file to be selected for processing. File formats
are those supported by the Silicon Graphics Audio File Library:
File Name
Channels
Sample Rate
Number of Frames
These are display only controls,
showing information about the selected file. The number of frames is calculated
from the length of the audio file and the selected video frame rate. The
spark cannot set the length of the output directly, but you can use this
value to set the sequence length.
OUT Frame
Sets the range of frame
numbers within which control channels will be generated. On selecting a
new file these are reset to the full length of the file.
Selects the video frame
rate. The effect needs to know this for the generated control channels
to be synchronised properly.
Click here and specify a
file name for saving an amplitude channel to. Save Amplitude 1 - 11
On selection the selected
channel amplitude control values are saved to a file of the given name;
for future use by other SpeedSix Monsters...
Brings up a file browser.
If the file selected has been generated by Save amplitude then the
control values are loaded into the selected channel amplitude. (Not really
much use here - just an example of how to load a channel, but I suppose
you could load one, modify it and save a new version.)
Once you have a licence
for SpeedSix.AiffExtract you will be able to copy and paste channel data from
AiffExtract to Action. Remember to scale your chosen channel to
a suitable range to match with the desired Action channel or it
will be truncated when you paste it back.
Reset sets default
values for the current frame.
Frequency bands = red bars.
The overlay shows the scale
of the spectrum display and the selected frequency bands. The white lines
are scale marks, at 1000Hz intervals, from 0 at the left to 20000 at the
right.
The red bars show the frequency
bands - top bar is frequency 1, going down to frequency 11 at the bottom.
The ends of the bands can be picked up and dragged to the positions of
interest, matching up with the spectrum display.