8
Guitar Tools
Hot Tuna
The Tuna is an effect that allows you to tune an instrument. There are no controls available, only displays. When a note is received,
the closest semitone will appear to the left of the meter, e.g. F#. The exact tuning of the note will then be displayed on the meter,
showing up to half a semitone either side of the displayed note, e.g. +/- 25. Adjust the tuning of the instrument until the LED meter
displays 0 (a central position).
Smart Hum Killer
The hum killer can be used to remove mains hum from a signal. Hum is a buzzing sound that can be caused by the mains
electricity supply. The hum killer works by ltering out and gating the signal. The gate has Threshold and Envelope controls,
where the latter is a combination of attack, hold and decay. The killer also has the ability to analyse and act intelligently on a
signal using Learn mode.
LEARN – Click to activate Learn mode. Do not play or send a signal through the effect whilst learning. The killer will then
analyse the signal for a few seconds to isolate the hum, after which the LED will light to indicate that the killer has
deactivated Learn mode and is acting on the signal.
THRESHOLD Knob – Sets the threshold of the gate. Rotate clockwise to increase the threshold. Increasing the threshold
makes the gating more obvious.
ENVELOPE Knob – Sets the envelope of the gate. In the short position, there is just a brief attack. Rotate clockwise to
introduce a decay, then increase both attack and decay times. As the dial is rotated further, a gradually increasing hold time
is also introduced.
GAIN REDUCTION Meter – Displays the amount of gain reduction occurring as a result of gating
HUM FREQ – Selects the type of mains supply value in use. Choose the setting that applies to your country. For the UK,
choose 50Hz, and for the US, choose 60Hz
CPU – Sets the CPU usage to Hi-res or Lo-res. High res uses more CPU power and lters out a wider range of sound (main
bands, plus sidebands). Lo-res just focuses on the main bands and uses less CPU power
E & O.E.