TC-Helicon VoicePrism, User Manual

AUDIO

The 

AUDIO

menu allows you to set the following overall audio processing parameters:

ESS SENSITIVITY

(Min, 1-9, Max): this raises and lowers the frequency threshold at

which an “ess” sound is passed dry or harmonized. At high settings, “ess” sounds

will be pitch shifted, potentially causing a grainy “ess” sound but also yielding supe-

rior pitch tracking. At low settings, your “ess’es” will sound natural, but at the risk of

tracking errors on some voices. 

ESS SENSITIVITY

is best left at 

5

(default) unless you

have experience tracking errors.

ANTI

-

FEEDBACK

(0 - 100%): tweak this setting to silence unwanted sibilants, especially

from vocals. It works by lowering the level of the high frequencies that initially create

the “sss” sound. 

BASS REJECT

(0% - 100%): reduces the effect of low frequency leakage into the

microphone. Tweak this if your bass player is a little to loud and causing weird trig-

gering effects.

TUNING

(440H

Z

)

(-64c - +63c): sets the offset from the tuning frequency of 440Hz, or

the “A” note just above middle “C” (“C”, for those of you wondering, is 261.63Hz).

Use this to change VoicePrism’s 440Hz reference to match a piano that has shifted

pitch but is still in tune relative to itself. This feature is also helpful when working

with tracks recorded using guitars tuned by ear, rather than by machine, allowing

you to match the guitar’s more liberal interpretation of the reference A note.

FOOTSWITCH

You can configure the buttons for a one or three button footswitch by twisting the

softknob under the button description. VoicePrism is factory configured for a one

button footswitch, the Right button which is initially set to 

MUT MO

and the Left and

Middle buttons are set to 

NONE

. If you change from a single button footswitch to a

three button footswitch, you can set useful functions to the Left and Middle buttons;

if you go back to a one button footswitch, remember to set the Left and Middle but-

tons back to 

NONE

. Warning: if the Left and Middle buttons are not set to 

NONE

with a

one button footswitch, pressing the footswitch button will cause VoicePrism to

behave unpredictably.

A more detailed description of each setting is shown on the LCD. Configuration

choices are:

NONE

: pressing the footswitch button does nothing. For a one button footswitch the

Middle and Left buttons must be set to 

NONE

.

MUTE MO

: Harmony Mute (Momentary) - activates the harmony voices only while

the button is pressed.

MUTE LC

: Harmony Mute (Latched) - mutes the harmonies until the button is

pressed again.

BYP MO

: Bypass (Momentary) - bypasses VoicePrism while the button is pressed.

BYP LC

: Bypassed (Latched) - bypasses VoicePrism until the button is pressed again.

SONG

+ 

: Next Song Step - increments to the next preset defined within a song.

SONG

- 

: Previous Song Step - decrements to the previous preset defined within a

song

PRESET

+ 

: Next Preset - increments numerically to the next preset (Preset 25 to

Preset 26)

PRESET

- 

: Previous Preset - decrements numerically to the previous preset (Preset 26

to Preset 25)

27

VoicePrism User Manual

Utility: Audio, Footswitch