Overview. MOTU 828es

CHAPTER

9

Mixer Effects

OVERVIEW

This chapter provides further information about the effects processors available in the DSP mixer in the 828es. For basic mixer operation, see:

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

Aux Mixing tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Mixer input channel strips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Main Mix and Monitor channel strips . . . . . . . . . . . . . . . . . . . 19

Aux bus channel strips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Group and Reverb channel strips . . . . . . . . . . . . . . . . . . . . . . . 21

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

A conventional high pass filter

Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

A standard gate with threshold/attack/release controls

Four-band parametric EQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Multi-band parametric EQ modeled after British analog consoles

Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

A standard compressor with threshold/ratio/ attack/release/gain controls

Leveler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

The Leveler™, an accurate model of the legendary

LA-2A optical compressor, which provides vintage, musical automatic gain control

Reverb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Classic reverb with tail lengths up to 60 seconds

Advantages over host-based mixing and processing

The hardware mixer in the 828es 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 828es 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 9-1: The High Pass Filter.

71