PROFESSIONAL MPEG AUDIO ADAPTER HAS FOUR DIGITAL AND ANALOG OUTPUTS

NewCastle, Delaware - May 1999 - AudioScience Inc., a manufacturer of digital audio products for the broadcast industry, has announced the availability of their latest PCI digital audio adapter, the ASI4215. It is distinguished from other adapters in its class by the ability to simultaneously record and playback five physical streams, all with different compression formats and sample rates.

The ASI4215 offers four playback streams and one record stream. Each playback stream is brought out to an independent analog and digital output. All streams have independent sample-rate and format. Any sample rate is supported in the range of 8kHz to 50kHz with 100Hz resolution.

Using the Motorola DSP56301 24bit DSP, the ASI4215 support a variety of audio formats including MPEG-1 Layer I/II, 8 bit PCM and 16bit PCM in both little and big endian formats. This allows system integrators and OEMs to add hi-fidelity CD-quality sound to their applications while effectively using only 1/4th to 1/12th of the disk space required for normal 16bit PCM. MPEG-1 Layer III playback will be available for the card through a software update in the fourth quarter.

All analog outputs and inputs are electronically balanced and have software selectable levels of between
-10 and +24dBu. 20bit Crystal Semiconductor oversampling A/D and D/A converters are used throughout both adapters to provide the highest level of audio quality in the industry.

The digital inputs and outputs maybe independently selected to be balanced AES/EBU or un-balanced S/PDIF. This allows a direct digital link to other digital audio equipment such as digital consoles, mixers and satellite up/down links.

Advanced features of the ASI4215 include 8Mbytes of on-board RAM for audio data buffering, providing glitch free audio. Automatic volume fades implemented in DSP firmware, free up even more CPU time, by removing the burden of having the automation software both track and fade the volume controls. By just specifying a start gain, end gain and duration, the adapter will fade one or all of the volume controls on the adapters mixer in real-time.

Another valuable feature, incorporated from customer feedback is built in non-volatile memory for a software based security scheme. This allows OEMs to assign each ASI4215 a unique serial number allowing the adapter to act as a hardware dongle or key, preventing piracy of the OEMs software and stopping operation of unauthorized adapters.

The ASI4215 is a 2/3 size PCI cards. Up to four cards maybe installed in a system using a simple one-of-four jumper located on the top of each adapter. The utilization of the PCI bus means that the adapter is totally jumper free as regards memory and interrupt settings.

Driver software for Windows95,98 and Windows NT is available free of charge from AudioScience's web site (www.audioscience.com). All the standard waveIn, waveOut and mixer APIs are supported.

Also available is the HPI Developers Kit (HPK) which allows low-level operation of any AudioScience adapter under real or protected mode DOS, Windows 3.1,95 and NT. Languages supported include Microsoft Visual C/C++, Borland C/C++ and Visual Basic. An NDA is required for the HPK.

The ASI4215 PCI based digital audio adapter is designed and manufactured in the USA by AudioScience Incorporated, 42C Reads Way, NewCastle, DE 19720, telephone +1-302-324-5333, FAX +1-302-738-9434. The companies web site is located on the Internet at www.audioscience.com. The ASI4215 is available now at a list price of $2795. Substantial quantity discounts are available.


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