Torso Electronics T-1 16-Track Algorithmic Desktop Sequencer - Manual (Page 194)

194 The T-1 Notebook : Reference & Guide
Analog Connectivity
9
9.1 General Trig & CV Concepts
Analog control with audio gear is typically based on a voltage signal. There
are several applications of voltage control depending on manufacturer
preference and standards. In Eurorack, the most common modular format,
a 0-5V signal is usually used for triggering events i.e. Note, On, Off and for
modulation, pitch and velocity. Other Voltage ranges of -5V to +5V bi-polar,
0-8V or 0-10V can also be found in Eurorack format.
Trigger & Gate
A trigger is a short pulse that activates an event. Typically a note is
activated by a trigger. In T-1 Triggers have a 0-5V range although most
gear will recognise the switch is triggered below the 5V threshold. Formats
may differ in whether the increase voltage from 0 to 5V triggers an event or
whether the trigger operates on a falling edge 5V to 0. These are V-Trig and
S-Trig formats respectively. A trigger differs from a gate in that it consists of
shorter pulses. A gate would normally be controlled to be held high or low
for longer periods.
T-1 triggers are 0-5V although the input voltage tolerance is up to 10V.
Control Voltage
Control Voltage or CV is used to control absolute or relative values. A
typical application is to control Pitch of an oscillator. The most common
format being 1V / Octave although Hz/Volt is an alternative. A trigger would
activate a note and the note value set by CV. Other modulation destinations
such as affecting parameters for effects and modules are also controlled by
CV. T-1 CV can also be configured as gates.
T-1 operates with a 0-5V CV range.
Clock
A clock is used to synchronise timing between devices. Pulses are
generated typically by a nominated primary lead and other secondary
devices will synchronise to this clock. The format is based on PPQN -
Pulses per Quarter Note with 24PPQN being most common. Other options
are available but the most important consideration is to match up the clock
with devices in the configuration. A reset is also available in T-1.
T-1 Clock Hierarchy - 1. Analog Clock 2. MIDI Clock 3. Link
T-1 has clock 2, 4, 8, 12, 16, 24 PPQN Options. Reset level 5V.
NOTES