Eowave Eobody3 Manual de usuario descargar pdf (Pagina 10)

• digital zoom and offset

digital zoom: max/mid/low/off on 7 offset: -127 to +127

To be compatible with the 7-bit MIDI world...

Those two parameters (digital zoom and offset)

specify how the real range of an analogue input

can be mapped on a 7-bit MIDI value. As a

matter of fact, a sensor does not necessarily

have a range equal to the reference voltage of

the Analogue to Digital Converter. A custom

scaled zoom has been implemented on the

digital value to take advantage of the 12-bit

resolution of the A/D converter. First, the

voltage reference has to be set to the largest

range among the sensors connected to the unit.

Then, the user can select the sensor’s range

within the 12 bits dynamic by specifying a

window size and an offset. The selected range

can then be converted into 7 bits MIDI data

without greatly increasing the quantification

step, as shown in the illustration.

The digital zoom & offset parameters may be

very useful to modulate a filter on a certain part

of the amplitude.

• inverse

127 becomes 0 and 0 becomes 127. This way you may inverse the curse of a sensor. With an

expression pedal, for example, you’ll be able to inverse its curse.

• filter

0-64

32 bits low-pass filter that smoothes the signal - for unstable sensors.

• gate

noise gate:12 values [0-11]

A noise gate threshold reduces the

bit depth of the signal. If the

analogue signal moves inside the

range of the noise gate, no

message will be sent. This field

enables the user to set the width

of the range. A large range will be

very effective against strong noise

but will make the values less

sensitive to a relevant change of

the analogue signal. A threshold of

5 corresponds to 127 different

possible values (i.e.: the analogue

has to change at least of 32 (from

4095 above or under its current

position to be detected as

changing). A threshold of 11

corresponds to 2 bits, useful for

switches or all on/off sensors.

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