#SMAART 7 COHERENCE FULL#

I find using the Delay Locator a bit easier.ДonвЂ™t worry if you donвЂ™t get a full 6dB of summation at every frequency.

You could also just mouse over the second peak in the Live IR window to see the time offset, but you have to get your mouse in the exact right spot. Click Find again to verify the change.Put this number into the delay line for your Front-fill. This is the difference in the current delay and the measured delay.

Use the Delay Locator to set the compensation delay in Smaart. Now that you have found XLF, the process of setting the delay for the front-fill is simple. If I zoom out, zoom in, and still donвЂ™t see them, IвЂ™ll go back to solo measurements to track them down. If you donвЂ™t see two distinct peaks, they may be out of bounds of the graph, already on top of each other, too low in level, or something else. Measuring two sources at once can be tricky. This makes the Live IR graph bigger, which really helps for tracking it on an iPad screen. I would guess the position of XLF, measure each system solo, resetting the delay each time, look at the magnitude graph, then move the mic, over and over again until I found matching level.ДЄ turning point for me was discovering the option in the Transfer Function Options page called proportional panes.

With both arrays playing at the same time, move the mic while watching the Live IR until the peaks match.

Start at the geometric mid-point between L and FF or wherever your ears find matching level.

Where L solo = FF solo we will find XLF (crossover between left and right). Now that the sub systems are playing nicely alone, letвЂ™s schedule a play date. Pink is the Left Main array and green is the Front-fill. Here are the solo measurements of my Main and Front-fills. Otherwise, it will be difficult to create a seamless transition at the acoustic crossover point.

Measure a single Front-fill solo Set EQ and level to match ONAXL.Д«efore we combine the Left Main and the Front-fill, we need to match their solo on-axis response and level.

Set relative solo level and EQ for Main and Front-fill at on-axis positions.ДЄnother way to say this would be ONAXL (on-axis with left) = ONAXF (on-axis with front-fill). Now, all we need to do is fill in the gap left in the front of the stage with our Front-fills. In laymenвЂ™s terms: it sounds the same everywhere we expected it to. For this example, we are going to assume that the system has been perfectly designed so that it has minimum level, spectral, and ripple variance from vertical top to vertical bottom of the audience area covered by the Main. Sound Systems: Design and Optimization by Bob McCarthyДЄ system can only be optimized as well as it is designed.

ONAX: A mic position used for calibration located at or near the horizontal and vertical center of a given speaker or array. Set relative solo level and EQ for Main and Front-fill at on-axis positions.Д¬rossover (acoustic): The frequency and/or location where two separate sound sources combine together at equal level.If the mic location is too close to the stage, timing errors and comb filtering will worsen. If your mic location is too far into the audience, your front-fills will be too loud, tearing off the faces of the season ticket holders in the front row. The challenge is in choosing the correct measurement microphone location. Setting the delay for the front-fill speakers is a very easy process using Smaart.

Smaart 7 coherence