Reality Technologies Australia

Braeside, Victoria

Phone: +61-3-85817638

Fax: +61-3-9587-4986

Email: info@reality-design.com.au

Website © 2011 Reality Technologies Australia

Speaker sound stage presentation is limited by the positioning of the speakers – unless the listener is in the one and only exact sweet spot between the speakers, either in stereo or surround, the sound stage presented is not correct, nor is it consistent with respect to positioning away from the central position.

Previous attempts to solve this problem include bouncing the audio off walls and around the room – a technique that is highly room dependent and usually inaccurate.

The most common means of correcting a stereo image has been to include a centre speaker as part of the specification. The result of this is a sagging stereo image that doesn’t retain consistency with respect to the listener position around the room, and in a movie situation results in the central sound being below the image it supposedly represents.

Virtualizers get little or no benefit from these techniques.

Total perspective is a system that corrects the stereo or surround sound image, so that every person in the audience perceives an accurate sound-stage, with audio placements being consistent for every listener relative to where they are sitting.

In stereo, this means that you can sit anywhere and listen to a full rich stereo sound stage without the sound stage being constricted to the side of the room you are sitting in.

In surround sound, this gives a consistent circular sound stage in the room. For example: a fly buzzing in the middle of the room. Without Total Perspective, the sound will seem to be on the side of the room that the listener is on. With Total perspective, listeners on the left or the right will both point to the centre of the room as the source of the sound.

Importantly Total Perspective is not a new format and any system whether it be Stereo, Dolby, DTS or other will benefit

Total Perspective allows the sound image to match the on screen visual image and everyone in the room perceives the two as if they were matched. As Total Perspective does not require a centre speaker (a listener can still have one if preferred) the image does not appear below or above the screen.

Additionally, the Total Perspective system adds breadth to the image, creating a holographic sound in stereo or surround, that more closely matches the original sound stage, or the action on a movie screen.

This also means that 2 channel surround virtualizers, which traditionally only work in a very tight window in the central listening position, are now able to function properly from any seat in the audience. This is a major advantage to people where space or room restrictions prevent them from installing rear speakers.

The system  does require a new type of speaker design, as well as some audio processing.

There are multiple levels of Total Perspective, ranging from home domestic versions right up to our Ultimate system. Below are a series of graphs showing the relative image perspective in each case, starting with stereo. Click on each of the thumbnails to the right of the image to cycle through the results from implementing various levels of Total Perspective.

Note the following: The threshold of perceivable image drift has been tested as being 15% when using Total Perspective, as shown by the yellow areas. The key appears at the bottom of the grids.

• Any existing C.E surround company including speaker producers and system companies.
• Television and home theatre company’s will also provide the technology to their end users.
• Company’s providing advanced sound systems to public theatres and other auditoriums will also make major improvements in what they their offer with Total Perspective enabled systems.

For more information or to inquire about a demonstration, contact our Australian office below, or using the contact page.

Click each thumbnail to view the effect of the various levels of Total Perspective.

The sweet spot