News, tours, venues, and more!
Stay up to date with Meyer Sound.
Sign Up for Newsletters

Meyer Sound Forum

Welcome to the Meyer Sound Forum!
While our customer support team moderates this forum and participates in some discussions, this is not an ingress point for our internal support staff. To submit a feature request or bug report, please use the button below.

Submit Feature Request or Bug Report

Code of Conduct
This forum for is for audio professionals and Meyer Sound users to exchange advice, ask questions, meet with other members of the audio community and Meyer Sound Customer Support personnel. Please keep discussions relevant to Meyer Sound products.
Be Kind and Courteous
We’re all in this together to create a welcoming environment. Let’s treat everyone with respect. Healthy debates are natural, but kindness is required.
No Promotions or Spam
Give more than you take to this forum. Self-promotion, spam and irrelevant links aren’t allowed. Please keep discussions relevant to Meyer Sound products. Do not post product ads or “For Sale” ads. Do not post inappropriate images or ads, you will be banned immediately.
Respect Everyone’s Privacy
Being part of this group requires mutual trust. Authentic, expressive discussions make forums great, but may also be sensitive and private. What’s shared in the forums should stay in the forums.
Keep it Legal
Be mindful of security, copyright, and intellectual property concerns when sharing venue drawings, project files, Spacemaps and other file types.
File Posting
File uploads are allowed up to 10MB for the following types: jpg, jpeg, gif, png, bmp, pdf, mapp, spacemaps, coreproject. For larger files, please use a file sharing service and post a link.
Specific Software Support Issues
Visit our Contact Form select Software Support, and enter the requested information to create a feature request or bug report.
Consult a Professional
Absolutely no advice for rigging/electrical/life safety is allowed beyond “Consult a professional.”
For requests and issues related to this forum, please email
Meyer Sound is not liable or responsible for content posted in these forums.
Forum Navigation
You need to log in to create posts and topics.

Question about decorrelation

If I put an object on a frontal system in Space map, is there any decorrelation algorithms behind?

Meyer Sound has reacted to this post.
Meyer Sound

@zhacker No, there is no decorrelation algorithm operating under the hood. Each input of a Spacemap system can use the same or different Spacemaps. For each input, as the Spacemap Panner (which represents an input) is moved relative to the nodes in the Spacemap, the levels change at the cross-points of the Summing Matrix of the GALAXY, changing the level of the input signal routed to the system outputs. There is no decorrelation inherent to this function, though loudspeaker locations and listener locations can be great enough for decorrelation. The Delay Matrix of the GALAXY is post the Summing Matrix and there is a delay on each output as well. These can be used to decorrelate a signal by adding enough time offset, if desired. You can test this by setting up two loudspeakers, locating a sound between two of the loudspeakers by moving the Spacemap Panner between the two speaker nodes, adding delay to one of the Delay Matrix cross-points or to one of the outputs, and moving the Spacemap Panner between the nodes to observe the subjective result. Does this help your understanding of the app? Anyone else have some thoughts?

Thank for your detailed content.

I think this non-decorrelation will be beneficial when the input is moving, it will induce less artifacts right?

I’m just curious about, when all of my inputs are nearly static such as  orchestra stems , how does each stem sounds like through 3 or 4(maybe totally frontal 7)hangs of arrays(let’s assume that the input as well as the stem ,is sitting at the note which have already connected with related arrays), will it cause a audible comb filter effect in audience?

@Wenzhao, Yes, multiple arrivals of correlated signals, at different times, if they differ in level by less than 18 dB, will result in noticeable combing (some say 12, 9, or 15 dB level difference). Relative level between the signals determines the amount of frequency response ripple, maximum ripple = relative levels match, less ripple as the relative levels diverge. The time offset(s) determine which frequencies will add and cancel.  You're thinking about the correct issues. Check out Bob McCarthy discussing the topic here: - correlation discussion starts at 14:30 in this video.