SOMA Pulsar-23, Manual

Page: 103 / 172

103 The Pulsar-23 Notebook : Reference & Guide
SHAOS & LFO
5
NOTES
5.3 Sample & Hold and Direct Outputs
SHAOS has 4 outputs each with its own unique characteristics for the
pseudo-random sequence. The internal clock will synchronise sampling and
holding but the ‘S/H’ input can take over when an alternate pulse source is
connected. Sample and Hold grabs the state of the pseudo-random
sequencer and holds it for a period. This creates glitchy, unpredictable
patterns. Two outputs are positioned before the sample and hold function,
outputting the pseudo-random sequence unaffected by S/H. Two outputs
are also positioned after the sample and hold function and are therefore
affected also by S/H activity. The ‘BIT’ value attributed to each output refers
to the number of states generated across the sequence. These states are
effectively CV levels and are useful for melodic patterns such as controlling
the pitch of tuneable functions.
In general the sequence consists of the steps which can drive triggers
based on the clock and the randomisation plus the sample and hold on the
two S&H outputs. Also the state, based on the bits, will determine a level
which can control CV as a source.
8 1 0 0 0
7 0 1 1 1
6 0 1 0 1
5 0 1 0 0
4 0 0 1 1
3 0 0 1 0
2 0 0 0 1
1 0 0 0 0
1 Bit
2 Levels
2 Bit
4 Levels
The shift register will ‘move’ data through the function incrementally based on the
clock synchronisation. Pulsar-23 generates pseudo-random sequences
additionally affected by the sample and hold function. The CV levels or states
when patched to a tune parameter can generate melodic patterns.
3 Bit
8 Levels
Level Bits