EMU(4) - Device Drivers Manual #
EMU(4) - Device Drivers Manual
NAME #
emu - Creative Labs SBLive!, PCI 512, and Audigy audio device
SYNOPSIS #
emu* at pci? audio* at emu?
DESCRIPTION #
The emu device driver supports Creative Labs SoundBlaster Live!, Sound Blaster PCI 512, and SoundBlaster Audigy cards.
These Environmental Audio cards are based upon the programmable EMU10K1 digital-processing chip.
Hardware features:
E-mu Systems, Inc. EMU10K1 music synthesis engine
64-voice hardware polyphony with E-mu’s patented 8-point interpolation technology
Up to 1024-voice polyphony with multi-timbre capability
Support for real-time digital effects like reverb, chorus, flanger, pitch shifter, or distortion across any audio source
User-selectable settings are optimized for headphones, two or four speakers
Processes sample rates from 5kHz to 48kHz
Creative Multi Speaker Surround (CMSS) places any mono or stereo sound source in a 360 degree audio space
Hardware full-duplex support enables simultaneous record and playback at 8 standard sample rates
Allows multiple audio sources playback on the same speaker system
SEE ALSO #
ac97(4), audio(4), intro(4), joy(4), pci(4)
HISTORY #
The emu device driver appeared in OpenBSD 3.1.
AUTHORS #
The emu driver was written by Yannick Montulet <yannick.montulet@epitech.net> and ported to OpenBSD 3.1 by Michael Shalayeff <mickey@openbsd.org>.
CAVEATS #
ATTENTION!
The hardware interface of this card contains registers not used for normal operation, but potentially dangerous and not possible to disable. Potential damage ranges from frying the card to frying motherboard or external equipment connected to its outputs.
BUGS #
Currently this driver does not support MIDI, joystick input, or the multi-voice capability.
There is currently no way to control the volume of the DAC for SoundBlaster Audigy cards.
S-PDIF digital output does not work for SoundBlaster Live! and SoundBlaster Audigy cards.
OpenBSD 7.5 - July 16, 2013