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Codecs enable VoIP, 7.1 audio

Posted: 14 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:STAC9271? STAC9272? STAC9273? STAC9274? STAC9227?

SigmaTel Inc. launched its new family of 8- and 10-channel high definition (HD) audio codecs, the STAC9271/9272/9273/9274 and the STAC9227/9228/9229/9230.

The audio codec solutions are said to enable systems to simultaneously play 7.1-channel audio and VoIP or a second stereo audio stream. The new codecs have an SNR up to 105dB and support technologies like digital microphone interface and the ADAT Optical lightpipe.

The products support Dolby Master Studio and bring Dolby audio presentation capabilities to PC platforms. They support industry initiatives, including the Intel High Definition Audio interface, the Microsoft Unified Audio Architecture and the new Microsoft Windows logo program requirements.

The STAC9271/72/73/74 codecs are targeted at high-end and entertainment PCs and provide 7.1-channel audio with simultaneous real-time communication (RTC) and quad digital microphone interfaces for voice input supporting applications like VoIP and speech recognition.

The STAC9227/28/29/30 codecs are eight-channel HD audio codecs targeted at desktop and notebook PCs providing support for 7.1-channel audio or 5.1-channel audio with simultaneous RTC, as well as quad digital microphone interfaces. Both the STAC9227/28/29/30 and the STAC9271/72/73/74 provide three stereo ADCs with 24bit resolution, integrated headphone amps and universal jacks functionality for jack retasking.

SigmaTel's new HD audio codecs also support software solutions, including: Intel Audio Studio from Sonic Focus; Dolby PC Entertainment Experience, which includes Dolby Digital Live, Dolby Pro Logic IIx, Dolby Virtual Speaker technology and Dolby Headphone technology; Maxx Player from Waves; WOW and Tru Surround from SRS Labs; Microphone Beam forming, Acoustic Echo Cancellation and Noise Suppression from Knowles; SigmaTel Kernel Processing Interface; Dynamics Processing SKPI plug-in and 12 band parametric equaliser SKPI plug-in

The STAC9227/28/29/30 and the STAC9271/72/73/74 are currently sampling to customers.

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