User Guide

30
WHAT’S NEW? CHP. 2
ASIO driver support
In addition to supporting Microsoft Mapper, Windows Classic Wave, and WDM drivers, ACID 4.0 now
supports ASIO™ drivers. With its more direct data delivery to the sound card, the ASIO driver model
provides professional users with faster audible responses. You can choose which driver model ACID uses on
the
Audio tab in the Preferences dialog. For more information, see Using the Audio tab on page 181.
Loop Cloning in the Chopper
ACID 4.0 provides the option to create new loops using the Chopper. Simply open a track in the Chopper,
make a selection for the new loop, and drag the selection to the track list. ACID saves the selection as a new
file and adds it to the project as a new track. For more information, see Saving Chopper selections as new files on
page 90.
Bus tracks
You can now view any mixer control (bus, assignable effect, or soft synth) on a track at the bottom of the
track view. This allows you to add envelopes to any of these controls. Want to pan several tracks as a group?
Route the tracks to a bus and pan the bus using a pan envelope on the bus track. Want your assignable effect
parameters to change over time? Add an effect automation envelope to the bus track for the assignable
effect. For more information, see Automating mixer controls in track view on page 125.
Enhanced time stretching for Beatmapped tracks
In ACID 4.0, you can time-stretch a Beatmapped track with less stuttering and improved playback.
New audio panning types
Whether you’re using standard stereo panning or 5.1 surround panning, you can choose from among five
types of panning for ACID tracks and busses. For more information, see Choosing stereo pan types on page 103.
New envelope fade types
ACID 4.0 provides three new fade types: smooth, sharp, and hold. Fade types determine the interpolation
between two envelope points. For more information, see Changing envelope fade curves on page 100.
ReWire support
ACID is now a ReWire mixer (host) application. For more information, see Using soft synth controls on page
115.
MIDI
MIDI piano roll editing
ACID 4.0 introduces a piano roll editor that you can use to create, edit, and quantize MIDI data. The piano
roll editor is one of two OPT (Open Plug-in Technology) plug-ins included in ACID 4.0. For more
information, see Using the piano roll editor on page 134.
MIDI step recording
The new list editor OPT plug-in allows you to step record MIDI from within ACID. For more information, see
Step recording events on page 145.