Ensoniq AudioPCI-based cards In 1998, Creative acquired
Ensoniq Corporation, manufacturer of the AudioPCI, a card popular with
OEMs at the time. It was a full-featured solution with
wavetable MIDI (
sample-based synthesizer), 4-speaker
DirectSound3D surround sound,
A3D emulation, and
DOS legacy support via a
terminate-and-stay-resident program. It was cheap due to lack of hardware acceleration. It is full-duplex but at least in MS Windows it cannot play back several sources at once. Creative released many cards using the original AudioPCI chip,
Ensoniq ES1370, and several boards using revised versions of this chip (
ES1371 and
ES1373), and some with Creative-labeled AudioPCI chips. Boards using AudioPCI tech are usually easily identifiable by the board design and the chip size because they all look quite similar. Such boards include
Sound Blaster PCI64 (April 1998),
PCI128 (July 1998),
Creative Ensoniq AudioPCI,
Vibra PCI and
Sound Blaster 16 PCI. An ES137x chip contains three stereo sample rate converters, some buffers and a PCI busmaster interface. Analogue interfacing is done by a codec chip, which runs at a fixed sampling frequency of 44 (Ensoniq Audio PCI) or 48 kHz (Creative's versions). (ISA soundcards had not resampled but switched between different time bases.) ES137x do not support
SoundFonts but a filter-less MIDI engine with
wavetable (
sample table) sets of 2, 4, and 8MB size.
Sound Blaster Live! When the
Sound Blaster Live! was introduced in August 1998, the use of a programmable
digital signal processor in PC-audio was not unprecedented, as IBM had already done that with cheap
Mwave sound- and modem-cards and
Turtle Beach with their professional Hurricane soundcards. The Live! was built around Creative's new EMU10K1 chip, which contained 2.44 million transistors and was advertised of processing a flashy 1,000
MIPS. The EMU10K1 (and its successors) did not use on-card RAM/ROM storage for instrument samples, instead it used a PCI busmaster interface to access sample-data stored in the host-PC's system memory. A/D- and D/A- converters as well as analogue mixing is done by an AC'97 chip running at 48 kHz sampling rate. All members of the SB Live! family have at least four-channel analog audio outputs and a 15-pin MIDI/Joystick multiport. For game titles,
EAX 1.0 (and later 2.0) (
environmental audio extensions, which briefly competed with the now defunct
A3D 2.0) added hardware-accelerated acoustic effects. The EMU10K1 provided high-quality 64-voice
sample-based synthesizer (marketed as "Wavetable"), with self-produced or third-party customized patches or "Soundfonts", and the ability to resample the audio output as input and apply a range of real-time DSP effects to any set of audio
subchannels present in the device. The first model and flagship of the SB/Live family was the
SB Live! Gold. Featuring gold tracings on all major analog traces and external sockets, an
EMI-suppressing printed circuit board
substrate and
lacquer, the Gold came standard with a daughterboard that implemented a separate 4-channel alternative
mini-DIN digital output to Creative-branded internal-
DAC speaker sets, a S/P-DIF digital audio Input and Output with separate software mappings, and a fully decoded MIDI interface with separate Input and Output (along with on mini-DIN converter.) The Gold highlighted many features aimed at music composition; ease-of-use (
plug-and-play for musicians), real-time loopback-recording of the MIDI-synthesizer (with full freedom of Soundfonts, and environmental effects such as reverb, etc.), and bundled MIDI-software. The mainstream model was the
Sound Blaster Live! Like the Gold, the Live featured multi-speaker analog output (up to four channels), and identical music/sound generation capabilities (without the bundled MIDI software and interfacing-equipment.) Later versions of the Live!, usually called
Live! 5.1, offered 5.1-channel support which adds a
center channel speaker and
LFE subwoofer output, most useful for movie watching. The Live! 5.1 could also use one of the 3.5 mm jack ports as an SPDIF out, which allowed the connection of an external decoder. Creative also released a
Sound Blaster Live! Player 1024 edition, which is identical to the regular
Sound Blaster Live!, but with the addition of some extra software.
Sound Blaster PCI 512 The
Sound Blaster PCI 512 (CT4790) is an EMU10K1-based sound card designed to fill a lower cost segment than the Live! Value. It is capable of most of the Live! Value's features aside from being limited to 512 MIDI voice polyphony (a software-based limitation), lacking digital
I/O, removal of expansion
headers, and only stereo or
quadraphonic output support. The card's circuit layout is somewhat simpler than that of the Live! series.
Sound Blaster Audigy The
Sound Blaster Audigy (August 2001) featured the Audigy processor (EMU10K2), an improved version of the EMU10K1 processor that shipped with the
Sound Blaster Live!. The Audigy could process up to four EAX environments simultaneously with its upgraded on-chip DSP and native
EAX 3.0 ADVANCED HD support, and supported up to 5.1-channel output. The Audigy was controversially advertised as a 24-bit sound card. The EMU10K2's audio transport (DMA engine) was fixed at 16-bit sample precision at 48 kHz (like the EMU10K1 in the original Live!), and all audio had to be resampled to 48 kHz in order to be accepted by the DSP (for recording or rendering to output.)
Sound Blaster Audigy 2 (September 2002) featured an updated EMU10K2 processor, sometimes referred to as EMU10K2.5, with an improved DMA engine capable of 24-bit precision. Up to 192 kHz was supported for stereo playback/record, while 6.1 was capped at 96 kHz. In addition, Audigy 2 supported up to 6.1 (later
7.1) speakers and had improved
signal-to-noise ratio (SNR) over the Audigy (106 vs. 100
decibels (
A)). It also featured built-in
Dolby Digital EX 6.1 and 7.1 decoding for improved DVD play-back. The Audigy 2 line were the first sound cards to receive
THX certification.
Sound Blaster Audigy 2 ZS (September 2003) is essentially an Audigy 2 with updated DAC and
op-amps. Audigy 2 ZS uses the
Cirrus Logic CS4382 DAC together with the op-amps and can produce an output SNR of 108 dB. There were a few slight
printed circuit board modifications and
7.1 audio support was added.
Sound Blaster Audigy 4 Pro (November 2004) was an Audigy 2 ZS with updated DACs and
ADCs, the new DAC being the Cirrus Logic CS4398, boosting the output SNR to 113 dB. Other than a
breakout box, it has no distinguishable difference from the Audigy 2 ZS. The DSP is identical to the Audigy 2 ZS's but Creative put an "Audigy 4" sticker to cover the chip, making it appear as if it is a new chip. The Audigy 4 Pro is not to be confused with the Audigy 4 (Value) which contains lower quality DACs and does not have golden plated jacks. The Audigy 4 (Value) is more in line with the Audigy 2 Value series. The Audigy 4 had a shorter life span than its predecessors, due to the short window between it and the next-generation Sound Blaster X-Fi.
Sound Blaster Audigy Rx (September 2013) is similar to the
Audigy 4 but with a dedicated 600-ohm headphone amplifier and a
PCIe 1x interface.
Sound Blaster Audigy Fx (September 2013) also features a 600-ohm amplifier and a PCIe interface, but lacks the EMU10K DSP.
Sound Blaster X-Fi The
X-Fi (for "Extreme Fidelity") was released in August 2005 and came in
XtremeGamer,
Titanium,
Titanium Fatal1ty Professional,
Titanium Fatal1ty Champion and
Elite Pro configurations. The 130
nm EMU20K1 (or EMU20K2 for Titanium series models) audio chip operates at 400
MHz and has 51 million
transistors. The computational power of this processor, i.e. its performance, is estimated as 10,000 MIPS, which is about 24 times higher than the estimated performance of its predecessor, the Audigy processor. Beginning with the 2008 Titanium models, newer X-Fi cards switched from PCI to
PCI Express x1 connectors. With the X-Fi's "Active Modal Architecture" (AMA), the user can choose one of three optimization modes: Gaming, Entertainment, and Creation; each enabling a combination of the features of the chipset. The X-Fi uses
EAX 5.0 which supports up to 128 3D-positioned voices with up to four effects applied to each. This release also included the 24-bit crystallizer, which is intended to pronounce percussion elements by placing some emphasis on low and high pitched parts of the sound. The X-Fi, at its release, offered some of the most powerful mixing capabilities available, making it a powerful entry-level card for home musicians. The other big improvement in the X-Fi over the previous Audigy designs was the complete overhaul of the resampling engine on the card. The previous Audigy cards had their DSPs locked at 48/16, meaning any content that did not match was resampled on the card in hardware; which was done poorly and resulted in a lot of intermodulation distortion. Many hardcore users worked around this by means of resampling their content using high quality software decoders, usually in the form of a plugin in their media player. Creative completely re-wrote the resampling method used on the X-Fi and dedicated more than half of the power of the DSP to the process; resulting in a very clean resample. ==Sixth generation Sound Blaster
Sound Core3D cards==