R972 Trinnov User Notes - Page 5

Yes, theoretically. It would have to be a center rear phantom image. Rear info in 6.1 would be interesting. Would be good test.


Yes, Could try it. Would need the plane of the mic in line with the upper speakers. I'm looking into best place to locate center to have minimum effect on remapping- essentially using the center only to tell the system there are 5 speakers, so that it will properly use Trinnov remapping.


For the R972 we have discovered now both 3 and 4 speaker setups confuse the processor (3 speakers > processor goes to stereo). The microcontroller is expecting Trinnov to report 2 or 5-7 speakers. I expect this to be consistent with all units. If one is considering 3-4 speakers, 5 will need to be connected, if only temporarily, to get remapping. If one wants a configuration of only 3 fronts L/C/R, to remap stereo or front only surround, it will require connecting more then 3 speakers during cal. Both will be reported in the User Notes as known issues.

Cheers,

Yes you could try it. Also- the mic in the pic looks too far forward, as its 3-4 ft in front of listening position.


You won't have Chris' issue because you have the minimum 5 speakers connected for surround remapping.

Yes, I would give this a try- when cal, aim the speakers directly at mic if needed to get a good cal, then aim away if you like. Same for sides. Keep in mind, as you aim away, the hi's will roll off or vice versa. For film, not so bad to rolloff, ITU (music) you want to keep them aiming at listener to maintain EQ.


I see pic, but not the spkr with 45 azmith, 45 elevation.


SPATIALITY

You are on the right track, but the answer is not so simple as we imagine. Some like to say Trinnov creates imaginary speakers. We don't. We create cohesive spatial images based on existing speaker locations. An example: lets consider a soundtrack has a pinpoint sound at 60degees right. If you want to hear that sound with spatial accuracy and there is no speaker there, say they are where they should be at 30 and 120 deg= 90 deg apart. You'd have to be in exact the sweet spot to hear the image correctly. Move sideways to the image and it will shift accordingly (like a stereo image would) because the speakers creating the image are widely spaced. Now consider what happens if you place a speaker at 60 degrees with Trinnov spatial correction. Trinnov places the spatial sound created for 60 deg there, and one can move beyond the sweet spot and still correctly hear it. Place the speakers where you want high spatial accuracy. Within the limitations of the variables, you'll get it.

A very interesting thing happens when no speaker duplicates the original content's placement: the image floats. Example you are about to try: 4 speakers across the front. Image content is +22/0/-22 degrees. Speakers placed at +40/+15/-15/-40 could be very interesting. It's an alternative the "W" discussed in the User Notes.

Where the content has specific height information- a decoder is required. Where one is comparing playback formats with synthesized channels, be it Yamaha or others, by all means, examine the possibilities with Trinnov. With 3D we do use a form of height to build the image. Placing height channels with Trinnov will give a sense of vertical openness/space and it's very effective. In the real world, we don't listen to sounds in only one plane, its 3D.

This should answer your question in your later post regarding the difference between autoroute and 2D/3D. Autoroute has no spatial manipulation other then locating speakers and fixing mis-cabled systems where 2D/3D is not used.

Finding speaker locations is something only Trinnov can do. Jeff has it correct- while not finding the speakers, you can still get Trinnov EQ correction per Jeff's instruction. And when you do, the correction is more comprehensive then is available in the other units.

Audiophile 1 for listeners with full-range left and right speakers that want the voicing of those speakers preserved: correction below 300 on all speakers (room behavior), plus amplitude correction of center and surrounds to L/R using both IIR + FIR.

Audiophile 2 corrects only the low frequencies on all channels below 300 Hz, IIR only.



It can, in the full version Trinnov systems.



You may be referring o the 2nd order, where tweet polarity is reversed and is in many cases corrected by a phase shift network. In any case, Trinnov will attempt to correct phase. Of course, correction can be non-optimal from a poorly implemented speaker be it the drivers or xover, or the room. It's all relative, and it illustrates the improvement of correction relative to the speaker design and room acoustic. Using better speakers with superior polar characteristics and a room with acoustic treatment will work with correction to provide superior results.

Where full range exists, regardless how it is formed (active or passive), it will be corrected as such.


R972 Trinnov would attempt to improve what you had done manually. If it could be measured, one could make gross adjustments manually and expect Trinnov to attain higher resolution correction. It's not necessarily trivial to do, and mistakes could be made, particularly if no measurements are available. The ST2-Pro would greatly add the benefit of lots of user data for making decisions about target curves and how much correction is implemented, as well as being able to measure as many points in the room as you like for reference.

Greetings All:

Some information you may all find useful during your Trinnov Cals: Trinnov calibrates by sending a series of noise bursts to the loudspeakers. The bursts are in sets of three. The algorithm is comparing the three bursts for consistency. If there isn't consistency, the bursts are repeated. Anything could cause a repeat: ultrasonic noise, a change in the acoustic field, etc. The point is if the calibration is captured in any of the three sets of bursts, it is good- and it's based solely on the last three bursts, not the whole series.

Conclusion: if some speakers take 3, 6, or 9 bursts total, don't dismiss the accuracy of the calibration. Look at the results. If they look good, they are.

Cheers and happy listening.

Elevation

Elevation (height angles) for all media is assumed to be in the plane of the cal mic- listening height.

THX/Dolby/DTS 7.1 Layout: +/- 0,30, 90, & 150 degrees

The closest setting to this on the R972 with 7.1 content, is to set REMAP=MUSIC. The Trinnov remap assumption for this is +/- 0, 30, 110, & 150 degrees, with no updates to the R972 planned. While we are aware of this format, we also are aware of a major film studio that masters DVD/Blu Ray at 110, not the mentioned 90. In any case, error to the side is negligible, as cinema mixes assume some latitude in placement to sides and rear.

For those with dedicated Trinnov based systems, this layout assumption may be manually programmed for use, but is not currently available as a standard. This and other formats may be released on the dedicated Trinnov units (not R972) in a future update.

Cheers,