Yamaha A3000 Quick Manual page 14

Special Hint Ø Setting start and end points; Determining memory usage
For better visual control it is highly recommended that you set the start and end points of
the Samples using the TINY WAVE EDITOR (see Additional Software in the appendix). If
you do not have this option there are still other methods to achieve your goal.
First, to set the start address you should play notes way below the original key. The more
you transpose the Sample down, the longer (and easier to hear) the delay at the beginning
that you are trying to cut off.
Another method: Move the end point to the very beginning of the sample. Then, move it to
the highest possible value (the latest position), where still nothing (even not a tiny click!)
can be heard. Transfer this temporary value from the end address to the start address, so
that both addresses are identical. Move the end point back to the maximum value. Now
truncate the sample with EXTRACT. The start address is now 0. The Sample is "tight".
If you want to save memory, you should also set the end point so that no additional
waveform memory is used. The correct end point depends mainly on the loop mode set for the
Sample. In Loop Mode "--->0" the loop continues sounding in the Release phase. In this case
the sample end point may safely be set slightly higher than the loop end point. In Loop
Mode "->0->" the Release phase goes beyond the loop end. Therefore, the sample end point
must not be set too early, in which case it would cut off the sound during the Release time
suitable for the Sample.
For the end point of one shot Samples (e.g. drums), you can proceed as described above for
the start point. This time though, bring the start point to the end of the Sample. Move the
start point towards the beginning and find the lowest value (the earliest position) where
still nothing can be heard. Transfer the found value to the end point and set the start point
back to zero. With EXTRACT you can now truncate the Sample to cut off the very end of the
waveform.
By the way, you can view the remaining memory amount in KB (UTILITY – SYSTEM).
However, it is not possible to determine the memory consumption of single Samples in KB.
Fortunately there is a formula to estimate: Divide the value of the end address by 50 to get
the approximate value in KB.
Loop = Here the start and end points for the playback loop are set. Their effect
depends on the set Loop Mode (see next paragraph). STEP and Tempo calculation
function as described in the preceding paragraph (WAVE). LpMonitor is very
helpful when editing loops, as pushing knob 5 plays only the loop of the Samples.
Negative values (e.g. -100ms) cause the playback to begin just before the loop start
point, even in the very first loop stage.
WvMode = This sets the Loop Mode (see Owner's Manual p. 169). Furthermore a
velocity-dependent start address can be programmed. The sampling frequency is
displayed at the right.
After COMMAND you can select the following command functions using knob 1:
SAVE... = The available options are the same as described in the section
"PROGRAM".
REVERT = All changes to the selected Samples will be undone by loading the last
saved version.
Special Hint Ø Revert function
REVERT is almost the same as the UNDO function familiar on other devices. It only works,
though, if the corresponding Sample has already been saved. Because of this you should
make it a habit to save your sample before executing any destructive function (loop, cut,
extract, normalize, re-sampling, fade ...). "COMMAND – SAVE – Edited" is very suitable
for this operation.
A3000 Guide 14