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| Virtual Surround System |
| Overview |
Sonaptic SoundStage Virtual Surround System™ transforms the audio quality of any source material played back over headphones or stereo speakers. Sonaptic’s Virtual Surround System uses advanced psychoacoustic processing to create virtual speakers positioned around the listener that envelop them in sound, placing them right in the middle of the content of their choice. This virtual surround experience can be delivered on standard speakers and headphones, with no additional hardware costs, using Sonaptic’s patented technology.
For speaker playback, Head Related Transfer Function processing reshapes the frequencies and simulates Inter-Aural Time Delays, whilst Cross-Talk Cancellation processing allows 3D positioning of each channel via virtual speakers around the listener. Small or closely spaced speakers deliver near HiFi quality with no colouring or distortion of the original audio source, larger speakers deliver a full virtual surround experience.
For headphone playback, HRTF processing reshapes the frequencies and simulates the Inter-Aural Time Delays before the audio is streamed to the Dynamic Audio Processing module. This module simulates the chaotic wave fronts found in typical rooms, adding cues to the audio that our brains interpret to attribute sound source location and distance, making the audio appear to emanate from virtual speakers not from headphones, and providing a much more natural and immersive audio experience from any audio source.
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| Implementation Data |
Sonaptic SoundStage uses a modular architecture developed specifically for mobile handsets, where our highly efficient software makes maximum use of the limited processing power and available memory. Over 40 million handsets worldwide make use of Sonaptic’s audio enhancement technology to vastly improve the consumer experience of multimedia content and 3D games.
Our expertise in low MIPs and memory footprint implementations enables manufacturers to configure SoundStage solutions for a huge variety of devices, delivering great sound whatever the memory and processing budget.
A typical VSS implementation for headphones requires around 10 MIPs at 48 kHz, whilst a speaker implementation at the same sample rate requires around 14 MIPs. At this sample rate, the memory requirement for headphones is around 1800 16-bit samples, and for speakers is 600 samples. Different sample rates are supported, and may increase or decrease these typical figures accordingly.
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UK AND EUROPE
Wolfson Microelectronics
(formely Sonaptic Limited)
3 Cliveden Office Village
Lancaster Road
High Wycombe
Buckinghamshire
HP12 3YZ
United Kingdom
JAPAN AND ASIA PACIFIC
Wolfson Microelectronics
(formely Sonaptic K.K.)
7-17-14-402 Nishi Shinjyuku
Shinjyuku-ku
Tokyo 160-0023
Japan
UNITED STATES
Wolfson Microelectronics
(formely Sonaptic, Inc)
13915 Burnet Road
Suite 101
Austin, TX 78728
Texas 78728
USA
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VSS_professional.pdf
