SGI Audio Features

Here is a brief summary of the audio hardware and software features of current and past SGI workstations. This is my homespun description of the SGI feature set and is subject to change without notice.

For complete specifications please refer to Ted Marsh's PostScript SGI Workstation Audio Specifications

Indigo2 (built-in), Indy (built-in), and Onyx (with Audio/Serial Option):
4 channels 16-bit analog line-level input and output
1 IEC958 24-bit stereo digital input and output
Numerous sample rates, including 8,11.025,16,22.05,32,44.1,and 48kHz
Supports simultaneous input and output with independent or synced rates
A/D, D/A, and/or digital out can be slaved to digital in clock for external sync
Headphone output, stereo or mono microphone input

Indigo R3K, Indigo R4K, and Personal IRIS 4D/35 (built-in):
2 channels 16-bit analog line-level input and output
1 IEC958 24-bit stereo digital input and output
Numerous sample rates, including 8,11.025,16,22.05,32,44.1,and 48kHz
Supports simultaneous input and output with independent or synced rates
A/D, D/A, and/or digital out can be slaved to digital in clock for external sync
Headphone output, mono microphone input

Silicon Graphics Audio Library (AL):
System software to provide real-time audio I/O
Bundled with IRIX 5.3 IRIX Developer's Option
Supports multiple simultaneous applications using audio hardware
Supports precise synchronization to other media, including MIDI & video

MIDI capabilities (Indy/Indigo2/Indigo):
Supports MIDI I/O with standard Mac-compatible MIDI adapter
SGI MIDI Library bundled with IRIX 5.3 IRIX Developer's Option
MIDI Library supports timestamped input and scheduled output
MIDI Library supports multiple simultaneous MIDI applications

DAT & CD Capabilities:
Normal DDS-1 drive supplied by SGI supports audio & data both
Read and write standard DAT audio tapes over SCSI
Read standard audio CD's over SCSI

A Bunch of Bundled Tools

Return to Audio Applications List