MOTU UltraLite User's Guide download pdf (Page 59)

CHAPTER

8 Mixer Effects

OVERVIEW

This chapter provides further information about

the effects processors available in the DSP mixer in

the UltraLite AVB. For basic mixer operation, see:

Mixing tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Aux Mixing tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Mixer input channel strips . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Main Mix and Monitor channel strips . . . . . . . . . . . . . . . . 18

Aux bus channel strips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Group and Reverb channel strips . . . . . . . . . . . . . . . . . . . . 20

Powerful DSP-driven mixing and effects

The mixer is driven by a powerful DSP that delivers

32-bit ﬂoating point precision and plenty of

processing bandwidth for no-latency effects,

including parametric EQ, dynamics, and reverb.

Effects can be applied when operating as an audio

interface or as a stand-alone mixer without a

computer. Input signals to the computer can be

recorded wet and/or dry, or recorded dry while a

real-time wet monitor mix is sent to musicians.

Effects include:

High Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

A conventional high pass ﬁlter

Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

A standard gate with threshold/attack/release

controls

Four-band parametric EQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Multi-band parametric EQ modeled after British

analog consoles

Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

A standard compressor with threshold/ratio/

attack/release/gain controls

Leveler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

The Leveler™, an accurate model of the legendary

LA-2A optical compressor, which provides

vintage, musical automatic gain control

Reverb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Classic reverb with tail lengths up to 60 seconds

Advantages over host-based mixing and

processing

The hardware mixer in the UltraLite AVB provides

several major advantages over mixing and

processing in your host audio software:

■ No buffer latency. The DSP-mixer provides the

same near-zero latency throughput performance as

a conventional digital mixer. Effects processing

doesn’t impact your computer’s CPU.

■ DSP mixing and routing can be maintained

independently of individual software applications

or projects.

■ DSP-driven mixing can function without the

computer, allowing the UltraLite AVB to operate as

a portable, stand-alone mixer with effects.

☛ Effects are disabled when operating at 4x

sample rates (176.4 or 192 kHz).

HIGH PASS FILTER

All input channel strips provide a 12 dB per octave

high pass ﬁlter. High Pass ﬁlters are often used to

remove unwanted mic rumble, for example.

Figure 8-1: The High Pass Filter.

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 85 86

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MOTU UltraLite User's Guide Page 59

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