Yamaha CBX-D5 - Manual (Page 11)

What is the CBX-D5? 5 What is the CBX-D5? 5 What is the CBX-D5? 5
3 What is the CBX-D5?
The CBX-D5 is a Digital Recording Processor that, when connected to a controlling
computer with supporting software and an external hard disk, provides up to four channels
of CD quality audio recording, processing, and playback.
Computer based
The CBX-D5 is controlled by a computer that is running CBX-D5 supporting software.
All audio data processing takes place inside the CBX-D5, so there is very little demand on
the controlling computer. For this reason the CBX-D5 can be used with some of the less
powerful, less expensive computers such as the Apple Macintosh SE/30, Classic II, and
LC; and the Atari ST/STE. It also leaves the computer free to get on with other jobs such
as processing MIDI sequence data and screen updates.
The CBX-D5, computer, and hard disk are all connected as part of a SCSI daisy chain. The
SCSI connection carries audio data between the CBX-D5 and hard disk for recording and
playback, and also control data from the computer to the CBX-D5. A MIDI connection
between the CBX-D5 and computer carries continuous controller information for
real-time volume, EQ, and pan control of the CBX-D5’s digital mixer.
Four-channel system
The CBX-D5 is a 4-channel system, i.e., 2-channel simultaneous recording and
4-channel playback. Channels can be recorded while other channels playback.
The CBX-D5 needs about 100Mbytes of hard disk space to record 10 minutes of stereo
digital audio (fs = 44.1kHz). The available recording time can be increased by simply
adding more, or larger hard disk drives to the SCSI daisy chain.
CD quality & editing
The CBX-D5 records audio data at a 16-bit resolution, and with 44.1kHz and 48kHz
sampling frequencies it provides all the sound quality benefits of the Compact Disc format
such as faithful reproduction, low noise, minimal distortion, etc.
Analog input and output signals are processed by 16-bit linear
∆ Σ
modulation A/D and
18-bit 8-times oversampling D/A converters. Analog connections use balanced XLR type
connectors. Digital I/O consists of AES/EBU, CD/DAT, and Y2. Allowing digital audio
data transfer between the CBX-D5 and other digital audio equipment.
As well as the A/D, D/A converters, the CBX-D5 also contains a 4-input, 4-bus, 2-send
digital mixer; a DSP for digital effects; DEQ for real-time EQ control; and sampling
frequency converters that allow recording and playback at differing sampling frequencies.
As well as the sound quality, two other benefits of recording with a CBX-D5 system as
opposed to analog tape are, the ability to nondestructively edit recordings and being able
to move audio data relative to time, a feature often referred to as audio time slip.
For a listing of some other CBX-D5 features, see “CBX-D5 features” on page 1.
The future
The CBX-D5 is a software dependent device, so with future supporting software it may be
possible to use the CBX-D5 for digital mixing with digital EQ and effects, sampling,
2-track mastering, waveform editing, and multimedia type applications.