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EMU(4)                   BSD Kernel Interfaces Manual                   EMU(4)

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:

           o   E-mu Systems, Inc. EMU10K1 music synthesis engine

           o   64-voice hardware polyphony with E-mu's patented 8-point inter-
               polation technology

           o   Up to 1024-voice polyphony with multi-timbre capability

           o   Support for real-time digital effects like reverb, chorus,
               flanger, pitch shifter, or distortion across any audio source

           o   User-selectable settings are optimized for headphones, two or
               four speakers

           o   Processes sample rates from 5kHz to 48kHz

           o   Creative Multi Speaker Surround (CMSS) places any mono or
               stereo sound source in a 360 degree audio space

           o   Hardware full-duplex support enables simultaneous record and
               playback at 8 standard sample rates

           o   Allows multiple audio sources playback on the same speaker sys-
               tem

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 nor-
     mal 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 Sound-
     Blaster Audigy cards.

     S-PDIF digital output does not work for SoundBlaster Live! and Sound-
     Blaster Audigy cards.

BSD                             March 26, 2017                             BSD