PC Sound Technologies:
PC Audio Playback & Recording
Technologies first changed when Win95 was
released. The PC Technologies in the works then, set the stage for what
was to follow from Bootable CD's to Auto Run,
then Auto Play CD's to CD
Ripping & CD Recording in Stereo. PC
Audio took another marked change in 1998 when
Audio Codec Chipsets were enhanced to provide even better Playback
We have since moved on from Stereo Analogue to Digital Multichannel
Surround Sound Playback & Recording. Although Win95 introduced us to USB,
Win98 made it possible to use it and then introduced us to Sony's iLink
a.k.a. 1394 FireWire.
While FireWire sits still for Consumers, Yamaha
has given FireWire another direction with their MLAN
Technology for Musicians. Hopefully a better way to handle not only Midi
(SMDI) Data but also a better way to handle the bandwidth requirements
of Digital Audio Data Sampling. FireWire is definitely easier to work with
than SCSI. And less expensive to implement too!
Have you noticed changes with the Digital
Audio Media Players & Windows Media
Technologies? Since Microsoft announced HDCD
- High Definition Compatible Digital
for CD & DVD, then they bought Liquid
Audio patents and then announced HighM.A.T.,
who is really working the crowd? He who sets the standards, rule the
And now, with all of those opportunities to hear Digital Audio anytime,
anywhere and the ability to also create Multichannel Digital Audio through
DVD-Audio, the Audio Video business machine
introduced the world unto (DRM) Digital Content
Management & Copy
Protection schemes along the way.
Whew! Oh what fun!
And still we ask, "Do you see
this as a Product or a Service?" Keep asking that question
while you listen to and record your own masterpiece. In the mean time -
Enjoy The Music! GB
PC Sound Playback Technologies:
(Digital Audio Compression)
Digital Theater Sound
- DTS Entertainment
Lucasfilm THX Multimedia
Media Version 9 - 5.1 Channel
Are You Ready for 5.1 Audio on Your PC
- Our latest PC
Build Specs feature 6 Channel On-Board Audio. Does your current PC
have this capability? Do you have the Speakers
as well as the appropriate Sound
Card for DVD-Audio?
Whether you do or don't, read on to learn the current Technology
enhancing our PC Digital Media Experience (11/7/2002).
Non-PCM Wave Formats and WDM Audio Drivers (12/4/2002).
PC Sound Recording Technologies:
Multiple Channel Audio Data and WAVE Files -
Defining 'WAVEFORMATEXTENSIBLE a.k.a. WAVE_FORMAT_EXTENSIBLE'.
Format GUIDs (globally unique identifiers).
- PCM - Pulse Code Modulation
- Red Book CD-DA, CD Digital Audio (Stereo, 16 bit / 44.1 KHz). In
other words, the Audio specification for 16-bit PCM.
- DVD-Audio (6 Channel, Dolby Digital
5.1 - 24 bit /96 KHz or 2 Channel 24 bit / 192 KHz)
- Dolby MLP - Meridian Lossless Packing Technology
Listener's Guide to DVD-Audio
- Dolby to License Meridian MLP
- Mpeg - Lossy Compression
- MP3 (MPeg Audio Layer 3) - Lossy Compression
- DSD (Direct Stream Digital) for SACD,
Super Audio CD [ScarletBook].
Foundry Knowledge Base ACID Basics Item # 1608:
Paraphrasing "5.1 Mixing with Acid 4 - PCM or DD/DTS 5.1; Use
Sound cards with Analogue 5.1 Outputs. Audigy cards can use separate
analog outputs for 5.1 output. This requires 3 cables (stereo front,
stereo rear, center/LFE) running to the discrete 5.1 inputs."
5.1 Surround Plug-In Pack includes: AC-3 Encoder
Plug-In & AC-3 DVD Burner!
Foundry Knowledge Base ACID Basics Item # 1616: "5.1 surround
sound vs. Dolby Digital (AC-3) in ACID Pro 4.0. Digital outputs do not
support transmission of 5.1 channel audio that is not encoded into a
digital format such as Dolby Digital. [Use an] AC-3 encoding program
to create a Dolby Digital file." (11/19/2002)
Multichannel Digital Audio Encoder -
audioMIDI.com - "Multichannel encoding software for Dolby
Digital 5.1 that creates a multichannel sound with no special
hardware" and Full version of Xtrack included for
Multitrack [PCM] digital audio editing (11/29/2002).
AC3 Decoder official page - Ogg, MP3,
WMA, WAV, AC3 (11/30/2002).
PC Sound Technologies In The News:
Audio Software: Minnetonka Audio Debuts Dolby Pro Logic II
Encoder - Minnetonka Audio Software has announced that it has
developed the first software application for Dolby Pro Logic II
encoding: the new SurCode™ for Dolby® Pro Logic® II. The
introduction of this Dolby Pro Logic II software encoder allows
broadcasters, game developers, video producers, and audio
professionals everywhere to easily encode surround sound into stereo
delivery formats for television, games, cable programming, and many
other media. The SurCode for Dolby Pro Logic II encoder will soon be
available for purchase from Minnetonka Audio (at www.surcode.com
and authorized dealers) as a standard Virtual Studio Technology (VST)
plug-in, which is compatible with many Digital Audio Workstations.
SurCode for Dolby Pro Logic II will also be available as a stand-alone
software encoder for the PC. Both versions will feature an MSRP of
$495. "Dolby Pro Logic II is an exceptional surround sound
technology and we are very excited to provide the first software
encoder to the audio world," said John Calder, Director of
Marketing at Minnetonka Audio. "We expect Pro Logic II software
encoding to become a big part of the sound industry." (6/7/2003)
Minnetonka Audio Software: Audio Software Encoders
- IO Bus -
Peripheral Bus: PlanetAnalog.com
- Intel kicks off nex-gen audio effort: "Azalia codecs
sit on a dedicated bus linking to dedicated audio, telephony or
communications devices. The bus runs at a selectable 3.3-1V. It
supports 24 Mbit/second audio inputs and "double-pumped" 48
Mbit/second audio output." (5/19/2003).
Magazine - News Desk: "Intel's next generation "High
Definition Audio" standards [program codenamed Azalia],
which were announced
at the Spring 2003 Intel Developers Forum." (2-25-03)
- PureNotes and
Merging Announce First Noise Removal Implementation for DSD/SACD -
Merging Technologies and PureNotes
Ltd announced today that they will be releasing noise removal
tools that can operate in Pyramix's DSD domain. A pre-release live
demo of the technology will be available at the Merging Booth at AES
Amsterdam from March 22-25, 2003.
"The Pyramix digital audio workstation is, in our view, the most
cost effective, high quality, real-time solution for professional use
and is a technology leader in the DSD multi-channel record, editing
and mastering market. Merging have always been interested improving
the results of audio restoration and we are very happy to have this
opportunity to work with them. Together we will bring a higher level
of quality and ease of use to the noise removal market. I believe this
is the first noise removal product that is designed for DSD/SACD."
Said Manelli Hosseini, CEO of PureNotes Ltd. (3/20/2003)
Surround Tools Now Supporting Pro Tools|HD (12/7/2002).
- High-Performance Media Access Technology (10/18/2002)!
Understanding Secure Audio Path (1/26/2002).
- Microsoft - HDCD
- High Definition Compatible Digital®
(HDCD®) is a patented
encode/decode process for delivering the full richness and detail of
the original microphone feed on Compact Discs and DVD-Audio HDCD
- CD Players [High Resolution PCM Recording!]