Specifications

DIGIDESIGN
D-FI
COMPUTER AUDIO
933
PHOTO - VIDEO - PRO AUDIO
ORDER & INFO. [phone] • FAX: [phone] [phone]
1-800-875-6951 • www.bhphotovideo.com
Analog and Retro Processing
in the Digital Domain
Retro instruments and processors are often used to create
certain sonic signatures in contemporary music. D-Fi is a
unique family of four (Lo-Fi, Sci-Fi, Recti-Fi and Vari-Fi)
plug-ins that can provide similar sound design tools to
Pro Tools users, without having to re-sample the audio files
through an 8-bit sampler or run a file through a modular analog
synth. While Lo-Fi provides bit-reduction for retro sound process-
ing without the expense of retro equipment, Sci-Fi adds analog
synth-type ring modulation, frequency modulation, and variable
frequency resonators. Recti-Fi provides super- and sub-harmonic synthesis, and Vari-Fi allows processing of disk files to cre-
ate the effect of audio changing speed to or from a complete stop.
While Pro Tools offers extremely high quality
signal paths with extremely low distortion
and noise artifacts, the D-Fi plug-ins alter
this in the name of creativity.Lo-Fi
diminishes the audio quality through bit-rate
reduction, and pure unadulterated noise and
distortion. Sci-Fi contorts the audio signals
through ring modulators and resonators.
Recti-Fi warps the signal through waveform
rectification.Vari-Fi simulates turntables
starting-up or slowing-down while playing
back audio.All support MultiShell II for DSP
sharing on TDM systems.
Lo-Fi
• Variable amplitude noise generator
• Sample rate reduction
• Sample size reduction
• Anti-aliasing control
• Soft clipping distortion and saturation
Recti-Fi
• Full wave rectifier
• Subharmonic synthesizer
• Pre-filter for adjusting effect frequency
• Post-filter for smoothing generated waveform
Sci-Fi
• Ring modulator
• Frequency modulation
• Positive and negative resonator
• Modulation control by LFO, envelope
follower, sample-and-hold,and trigger-
and-hold
Vari-Fi
(AudioSuite Only)
• Speed up from a complete stop to normal
speed, or slow down to a complete stop from
normal speed
TDM
Digidesign’s Time Division Multiplexing (TDM) technology is the
foundation of the Pro Tools professional environment, providing 24-bit
mixing and real-time digital signal processing (DSP) capabilities.TDM
Plug-Ins use the dedicated hardware of TDM systems, which offer easy
expandability — add as many TDM plug-ins as you want —up to the
DSP capacity of your system, no matter how many edits or how much
automation you have in a session.If you need more DSP,simply add
another HD Process card.
Real-Time AudioSuite (RTAS)
Real-Time AudioSuite Plug-Ins are host-based processors,using the
computer’s processing power to do their job.Functionally, RTAS
Plug-Ins offer many of the real-time benefits of TDM Plug-Ins. They are
fully automatable, their parameters can change in real time,and their
effects are not permanently written to the audio file. Since they are
host-based, RTAS Plug-Ins require trade-offs between track and
plug-in
count,edit density and amount of mix automation in a session.
HTDM
Host Time Division Multiplexing (HTDM)represent a hybrid of TDM
and RTAS technologies. HTDM Plug-Ins provide all the logistical
functionality of standard TDM Plug-Ins,but, like RTAS Plug-Ins, they
allow for all the processing to be done on the host. In so doing, HTDM
Plug-Ins offer two primary benefits: The resources of the Pro Tools|HD
Core and/or Process card remain available for other tasks; and,despite
running on the host, HTDM Plug-Ins can be instantiated on any track,a
characteristic previously confined to TDM Plug-Ins only.
AudioSuite
AudioSuite Plug-Ins provide file-based processing, meaning they process
or alter the sound file and create a new file with the processed sound.
The resulting effect is applied to the entire file.AudioSuite Plug-Ins are
great for conserving DSP power and certain types of processing where
there is no real-time benefit or application,such as normalization and
noise reduction.
Digidesign and Digidesign Development Partners make a wide range of plug-ins for four
different Digidesign Plug-In formats — Pro Tools|HD professional systems supports all four.