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Chapter 1—Welcome to the D24
D24—Owner’s Manual
Welcome to the D24
Thank you for choosing the Yamaha D24 Digital Multitrack Recorder.
The D24 uses standard 3.5-inch removable MO (Magneto Optical) disks for digital
audio recording and playback. By employing a removable media, backup downtime in
between sessions is eliminated. When one session is complete, simply insert a new disk
and begin recording right away. Random access capability provides instant access to up
to 99 projects per disk, 99 locate memories per project, all without unproductive
rewinding and fast forwarding. Audio data is not compressed, and superb sonic perfor-
mance is achieved using 16-, 20-, or 24-bit recording resolutions and 44.1 kHz, 48 kHz,
88.2 kHz, or 96 kHz sampling rates, all of which can be set on a project-by-project basis.
Overwrite-type 640 MB MO disks offer 8-track simultaneous recording, with a 24-bit
recording resolution and 44.1 kHz or 48 kHz sampling rates, and 4-track simultaneous
recording at the higher sampling rates of 88.2 kHz or 96 kHz. A single 640 MB MO disk
provides a total recording time of 120 track minutes, or 30 minutes for 4 tracks, 15 min-
utes for 8 tracks. In addition to the eight main tracks, each track features up to eight vir-
tual tracks, for a grand total of 64 tracks. Auto punch in/out recording, with multiple
take capability, allows you to choose the best from up to 99 takes. Both manual and auto
punch in/out recording can be rehearsed with automatic playback and input monitor
switching.
Video machine-like shuttle playback makes it easy to locate material, and the current
position can be nudged in sub-frame steps while listening to a small section of the sur-
rounding material. Tracks can be soloed for individual track monitoring. Other fea-
tures include ±6% varispeed, A-B repeat playback, and fast forward or rewind at 8x or
16x normal playback speed.
In addition to the 99 locate memories, the A, B, Last Rec In, and Last Rec Out points
offer additional ways locate specific positions quickly, repeatedly, and accurately. Other
quick locate functions include Project Search, Return to Zero, and Roll Back. Location
points can be specified with sub-frame accuracy.
Additional recording space can be made available, and projects backed up by connect-
ing optional, external hard disk drives or removable media disk drives to the D24’s SCSI
port. The number of tracks available for simultaneous recording and playback can be
expanded in multiples of eight by combining up to eight D24s. The total continuous
recording time can be extended by using two D24s in Serial mode. The D24’s 3U rack
size makes it a drop-in alternative to modular digital multitrack recorders.
Optional mini YGDAI (Yamaha General Digital Audio Interface) cards offer a variety
of analog and digital I/O configurations, with support for all the popular digital audio
interconnect formats: AES/EBU, ADAT, and Tascam TDIF-1. S/PDIF Coaxial I/O
allows digital stereo transfer between 2-channel digital audio equipment, CD players,
DAT decks, and mastering equipment. A front panel phones jack provides convenient
monitoring.
Once recorded, projects, tracks, and parts can be edited using non-destructive editing
functions, such as 50% to 200% time compression and expansion, ideal for
audio-fit-video applications, and pitch change without speed change. Project editing
functions include Copy, Delete, Erase, Title, Protect, and Timecode Modify. Track edit-
ing functions include Copy, Move, Erase, Swap, and Slip. Part editing functions include
Copy, Move, Erase, Insert Space, Insert Copy, and Delete, with single-step undo and
redo. Edit points can be specified with sub-frame accuracy.