RTA Video

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This topic contains 3 replies, has 4 voices, and was last updated by Profile photo of Hugh Hugh 2 weeks, 3 days ago.

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    Profile photo of CQ-18T

    I am new (amateur) to digital mixing and having a challenging time understanding how to properly make use of the RTA (Real-Time Analyzer).

    Can some with expertise able to please create a detailed video on how to use the RTA with the CQ-18T for both the GEQ and PEQ screens?

    I am sure I’m not the only one that would benefit.

    I would be extremely grateful.

    Much gratitude and thanks!

    Profile photo of WildR

    There are some helpful videos on the Allen&Heath website under the SQ series console that may enlighten you. Very similar functionality on the CQ products. Youtube has these also. Search How to use the RTA. Hope this is helpful.

    Profile photo of Brian

    Just keep in mind that while the RTA can be a useful graphical indication of the current audio/frequency spectrum, you have to understand that it shows you the “what” but not the “why”.

    It is up to the individual to understand and interpret RTA (and other) data correctly to get to the “why” answer. If you don’t understand the answer to “why”, you may come to wildly incorrect assumptions/conclusions and end up making decisions/changes that make things worse. What I am trying to say is that an RTA is not a “that was easy” button/tool that always provides clear cut answers and solutions.

    One of it’s best uses is to pin point frequencies that are “sticking” out on a particular input or buss. This may be an indication of a frequency being on the verge of feedback (or even actively feeding back) and the RTA screen can help us quickly identify any offending frequencies so we can use EQ cuts to increase our gain before feedback threshold. However just because a particular frequency is at a higher level than other frequencies doesn’t automatically mean there is a problem either. You have to learn the difference between the two.

    One of it’s worse uses is as a “system EQ” tool. It is much less helpful in those situations than people expect it to be because room acoustic “why” answers are so much more complicated than an RTA screen leads us to believe.

    Profile photo of Hugh

    Brian has offered outstanding advice pursuant to the less than obvious limitations of evaluating RTA scans. As a follow up, careful research into the “Standing Wave” issues that are prevalent in small venues/rooms are important to comprehend and address.

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