I'm on the $20/mo plan with additional OnDemand pricing for extra requests. Given that I use it every single day, often for hours at a time, $20/mo is a bargain.

If you open the HISE source in Cursor, you can ask Claude questions about code locations/definitions, workflows, how to write scripts in HISE, etc.

Do you think using Claude with Hise is useful? Are you using the paid plan?

You would probably add some throttling with a UI timer and/or on the processBlock end.

Just put a knob in the UI called knbCorrelation with range -1.0 to +1.0, or use the snippet below.

// Interface inInit()

const rm = Engine.getGlobalRoutingManager();
const corrCable = rm.getCable("correlation");
const knbCorrelation = Content.getComponent("knbCorrelation");

corrCable.registerCallback(function(vNorm)
{
    Console.print(vNorm);
    knbCorrelation.setValueNormalized(vNorm);

}, AsyncNotification);

// ScriptFX 1 onInit()
const var rm = Engine.getGlobalRoutingManager();
const var corrCable = rm.getCable("correlation");
corrCable.setRange(-1.0, 1.0);

reg correlationSum = 0.0;
reg sampleCount = 0;
reg smoothedCorrelation = 1;
reg prevSmoothedCorrelation = smoothedCorrelation;

// ScriptFX processBlock()
function processBlock(channels)
{
	var left = channels[0];
    var right = channels[1];
    var numSamples = left.length;
    
    correlationSum = 0.0;
    sampleCount = 0;
    
    // Process each sample pair
    for (var i = 0; i < numSamples; i++)
    {
        var leftSample = left[i];
        var rightSample = right[i];
        
        var normGain = Math.max(Math.abs(leftSample), Math.abs(rightSample));
        
        if (normGain > 0.0)
        {
            var thisCorrelation = 1.0 - (Math.abs(leftSample - rightSample) / normGain);
            correlationSum += thisCorrelation;
            sampleCount++;
        }
    }
    
    // Average correlation for this block
    if (sampleCount > 0)
    {
        var avgCorrelation = correlationSum / sampleCount;
        
        // Apply smoothing (same as backend: 0.8 * previous + 0.2 * current)
        smoothedCorrelation = 0.8 * prevSmoothedCorrelation + 0.2 * avgCorrelation;
        prevSmoothedCorrelation = smoothedCorrelation;
        
        corrCable.setValue(smoothedCorrelation);
    }
}

HiseSnippet 1650.3oc2X0sTaaDEVBPYJNoYZ5jNs8NML8BQf.VDBgVZZLXfDlFCdvz7yjoSl0qVasCR6pQZsab6vyPeE5aRyiPeDx08p9Fzd1URVq.kTvSaZR8EF1yO64aO+sm0si4XRRBO1vr1QihHFlWwpyHlvuoOhxL1aaCyqZ0BkHHw1oj1ZTDJIg3YXZN88kDLmcFC0m+3dagBPLLofjgwi3TL4gzPpnfZ6FeKMHXWjG4HZnlzq1XOLm0jGvG.3YZq5FQH7wn9j8QRwlxx3AnDeCyaXg8VEuJdstq5hP8tia20HcW28Ntj0w216KwXD91cwt25VHCyKsiGUvi6HPBRhg4Law8F0wm+CrTC7HZBsa.Qtv0nCX4Tx6xC7jGQIUil9z.u14NpDCCSq1EtsoScaW2pE0iNldg66iTLrKzP2AZNUY3McI34pCu5ZvqBHYpAoYRgz0r5fioQhBNR7bYq8XPzrGBhS5PIUVio9cSqlbPBlXoPzwjcigEi0vYs50WzF9Z9MpUChUIB63P66ZuCqOkQVpOQb+.dWTvg7ABJqeKDChdwNfzoBi4wwMQvIBzINTJuZkybRFj.jfxYyMV5iYcaVPGTIGXR83gQbFrvYtxhMWJzxryRwj9TY1aSTPPWHaxo2.FVJmyv84wgyW6mpYCefcNgChGESgsLk0FJNk28kRHhGgBFPjRfBn+Hwarz0NYQ6MSFwv6yEzdTrRAfdtEs4LfC4.lizpyV6jZ1mlUudUxSdti4AARWYErkUQwuIEcXCB6RhWzdnD5iEDxTJm9Y85S+zqNvogAMA4r8XTwAQD1qqlwHK1ISUyPEHpPknd0rD0NATORrA0SV0T1uanPtdiEiuausQBT99AaMXtHRrfJOIlaSFBMdRKDl0ZaRxwBdjR1r7Fn0v425uXrk+kdMFMdwq50HrTGveMj54EPZySnJ8zw6YKPgVCbuAfIJ2uP1UMigbOzKRkEhLXuGo208erlHmWHdMq1TA1uZLNUEXDBR+afwrVuen0N85QvhB.Ni0tO4sWe1ZYIPfMkF+JYKs28ItU1g8msrR6uMDEewZeJU372BMuEHzx5PDqOw4ltKAcugujMqfFi1ZpzYfDH0Wp9FJNInvn.RS9.lPRNiXHmK7IdkaJ6lxLJlLrSkBTgZaLtGEnVDJlbDuc.ZjSpYODBRKZ2MfiOtCzg8rM1hRiAaIkvA6iXLRPhRLoGJfzSB5b5Oq92m1IW4to88KwzUiIzkriB.IfDxcYo.BquvOUB0WU6wjbNiGarNKub9s+1DD1OSR6HDMVwuGO11QZepRQ3OesFTf0Krv7JASupJGsR.lJSFZeFM6rT5vNVD0pRxTRXFbIlryCHYKjvGt7+ENp+A0MwovVyun8XpZ6+7yWw1R6Y6Lda+FoqZ9w7JNK4.P3SSNUl0R0suocUn.Hqab6kGCeMbTQ7Zg6dZyTVbsf3BKTv5jZEemGR2bHIFpN0sfJRJ2+zb2Z49.8TCvMTUvDMre4y9o.9x5PqBWsDPQQAixJ1flGJyRrQ.XfwdHLuuBB.qaeCUgJkOHwdAfvJ.A7.vTLQQro557BsqpLOeyJePJP5Eq8vYOfkZmol.yoBEyh9mbAGCx5be6f6a9xowMtEwTXlAq8gxX3wLXRyr9M.MyojSCktttbs79wNP.Rs3OgOYLckqMyX5lyrXPpIZBH86O+7TlW15wngD0q9TWf8Ip0Ptbn88ILHKGbMtug288am228Ecte22AXA.gihQrjHdBwUameYGRH8HXDtDcpmViUpTCcpFaSDCX5a8pMRIURJoqXWvU3pOwUNwUzI1FwzD5ouDVqw+oMZQKlhz3U2aGlLatCAN4dGjfAGizOWZCGDjPdL0S36pqXA4UzI+.TrGDCw5fGRniEs8Qk8fZjKcTMm9M8VY2I7sxW5ct2J+dvj3kFyb1bL1gJuBXG1PR.Tmqv3GCE18PCBD4TKWn1hy3Q9bFsTZwgDn8TeXxRcrW4AZSg.t7nfx0abHIf.INEj9hFODlcEEC9IxD5KbuvibWY75yrRgqsr6h86uufZ5+W+Bpye0Gzv7c6n3mZAMtWwVEJs+uIV91Xfi2F1HDgi4OGmNmlrn+CTTfyMS8a+NqUK4Za2y9CAEBWY7bLt7VcFEWYRU7VSphqNoJd6IUw0lTEuyjp35+8JJuQeyABdXZsggQq16nFa0zLcDHUYhweQsTysb

Even if I don't use the Smoothed function for now and only use the formula, there's still an issue.

While HISE's own master analyzer correlation meter occasionally shows values ​​less than 0, this correlation meter never shows values ​​less than 0.

Also even when the signal ends, it remains stuck at positive values ​​again.

HiseSnippet 1752.3oc6Y8zaaTDEe23rkD2+nVTQkCbXUEGbPkTuNIsEUgrabRZiHowxNjBmZGu633gt6LlcmMsInh3BRbiy8FeMfKTgDG3FH9B.BIjPvg9Mn7lYV6cVGaWSnjlhpOT048l2adueu27duYSsPlKNJhEZXleyc6fMLOgUico71UaiHTiUWxv7TVqih33PaEoE2sCJJB6YXZl65BBlSOog72iKuHxGQcwojLL1hQbwqQBH7Tp0p7dDe+UPd3MIAZ6d9Jq5xnUY9rXvdxYUznCx8tnsw2DI11DVF2.E01v7srb8l2cd2K0bdGDp0kcZdIbyq3bYG7UbWv6cbcQtKzz0Yt4PFlGaYOBmE1fi33HCyIWj4sai1r6QUGvVjHRSerXgiQC3jUjWg46IbQAUipsI9d05BTQFFlV0RgsbJX6rVqS7H8nmBemVxvNUBc.zbhrlWtLlmit4UTy7FfIYpYRSpLoyX0vMjzgmxQXOG2ZUJDMagf3jton1qwDeyjVUYvNn7YCP2EuRHrnmDEJUr3ErKUp3LWMO76hWztJKLD6i3DF0dcLrs7PHLhauCBRXBC8kzreW6t5baLuJKnCiBKJb9d637fBSEbiXdmXtH6BjTlNJja4VsvtfPobER0+4wEm1xzsIT7rtgX.WEIYgaz7iDBKDHYayFg4RVUQ99MgDsBshotBGovL4+joyOsPkqAJK87jVeL3vT9Z3cv9E3gwXPkxsVezasExORtW0tcAiXKePDmYKZ+11EVGANIpYTg0fU0mw9h1RJAn6qwZlKX2aQ8YlQoM.YiX93Y6DR.HUo2DNcQWgqtExOFmxN+CD+CD.gTuPtMuM1lK.C66Q3ss+z4V3F6MaJRI1iDqJL2BpPe2eoneCRPGerv2cFTTSic1fcCv.wrglhnXKDgP8gfpc2njMip3IjKj4WvsqPW.zK3rPTL+zZGq.EtFmGRZFywEzYbKhGuMjWWTjW+fqlezVhPOImYuTm9rEIFk5hqynC2AELGr6I37Ly4FoqorgA6XZVgJzqYg2jwwaHuu.4aOHuc+rZ0Zf7RTmOjOMH1pLsQHXAZbPSbnNTH1HT4Ka4TqgWNUuZuqBSz1HitJkv2nClNrd.FI.IT5MWhUA+Otrv6oRJ71vm3gCMHdhpt8tLZHMZs1lOwXXJXwXNmQkJ3XVh3PWYsLkhNFxMkkJwbemZYi2e0kPbjn2Qhu.9WGbHmHfNykv6.ctUcRl1ZIbzc4rNRmMIqArowxcue5gdsJ6ltXgJAYld3aCHdd93ZrHhHZqODgg1gZ8zfnzy6yppcdOpUkPjGgc8PVbmL3vXo7d33vTOZXpe+MlgQBXdwPSyryIHttlvP3+5MmEMfo.trqtlelM7v3ZhmwpFg61dv13DCvFgbq+KrwjQtNokp2RpANo0Jevgv7US0aR4dkYkG+IrR6+Oh4jMLVBlXJCLIqQmR3CqLfIoWktCb4rFyGE1OHmar8RmQ6kSN1YBxgyNRms9pVRX9ntQJC8GsMxSaUC87JXWmEyIzsgwdCIPoWqaFGz.ddnKFLOJE6K5xaNgnEgZcwtMGafodxEOA9kvzQr1LgoSWl5vv4TvvwstEZGrbFVIB7Zx0sXgA1WGSwgB7wYDWw+ww8ovcF6mBugKGLgMCQznNrHritlafCHaBsvhxPsOIJow6Q8jnT15R7XZVUqHkYWBnXE.Jz12TU5RrjNQHsIixf0Yzz5DsgC9kxKSQPRQCL34daD4B.i.m0yqpECOhRdiwQWvTxkzIeCTnGDCcGUsxIGuZkOkOHvwNx8AAdAXriL8TmtqMp5otLzryGlFsWk7VnXedWpYu5Il5qSaFkjIPWGCUL1dabl7mA5PvylfW5jR4rUpi8wnHsqiuYk0f2lgBAbBe.wBm+we+lAFudcKk4ZKpWX+h63h49+83h41ep8oRRsqig43Zlb4SQxVQKaZccFKnAYut4a2oUqeu7RnfNP2vDRUlateq7svpOvTBsu5gO7GJuT3t8Q6OJqOhYkecu+p7JgX7dXsLZXaec4mYyRdX2493JT9UTS8Ig2oT++rvpjj3xyZ3VZMheiJ8XTmrcatd4fUvXOwGCQSB6O+O+oxcoqKvc9xu66KuF6d0fCDP3Otmd9hetxMH6ipwRU5qI3lX30nY6Z83WbiJC6oRmTify+p2JQd4akd4akd4akdNb2dzv.TV6ncj5bVvaLJYKmQw94yPJGFArCiyH.4Fxtsq5qQKpMNkjB32T4e41osVWr11o+uBsgQ.7Vna65lUU6SvRGTAm6fJ37GTAW3fJ3kNnBd4CpfW4oKn3opWKlyBT2MfmrWaY4e0.SS0q0kWSL9afCFdsF

It means there is 100% correlation between the left and right signals, which is the same as saying mono.

1.0 - (abs(left - right) / max(abs(left), abs(right)))

From the HISE source StereoInfo::calculate function:

void MainTopBar::ClickablePeakMeter::PopupComponent::StereoInfo::calculate(float left, float right)
{
	auto normGain = hmath::max(hmath::abs(left), hmath::abs(right));

	if(normGain > smoothedGain)
		smoothedGain = normGain;
	else
		smoothedGain *= coeff;

	if(normGain > 0.0f)
	{
		auto thisPan = hmath::abs(left) * -1.0f + hmath::abs(right);
		thisPan /= normGain;
		auto thisCorellation = 1.0 - (hmath::abs(left - right) / normGain);

		auto idx = jlimit(0, 100, roundToInt(101.0f * (thisPan * 0.5f + 0.5f)));

		panPos[0][idx] += normGain;

		smoothedPan = coeff * smoothedPan + (1.0f - coeff) * thisPan;

		smoothedCorrellation += thisCorellation;

		min_c = jmin<float>(min_c, smoothedCorrellation);
		max_c = jmax<float>(max_c, smoothedCorrellation);
	}
}

You would also need to implement some smoothing too.

I'm getting the gain levels using getCurrentLevel Where do you think the mistake is?

L*R / sqrt(L² * R²)

HiseSnippet 1764.3oc6Y8zaaTDEe2DugD2+nVTQkCHzpJN3TUkl0IosnJjciSRSDNMV1gT3TY7tiiG55cbmc1TRPEwQ9JzaHwM9D.mnW4FRbfKbnHNgDH0KbFdyLq8NqyFW2PZgT08Pj22adu4898dy68lM0XTWbXHkYXleyc6hMLOoUicC3sqzFQBLVaICySasNJjiY1JRKtaWTXH1yvzb7aJHXNUNC4ySJsHxGE3hSHYXrEk3hqR5P3ITqU98I99qf7vaR5ns54KulKMnB0mFA1y3VyZzE4dWz13agDKaLKiUQgsMLunkq27ty6dkly6fPstpSyqfadMmq5ful6BduqqKxcgltNyMGxvbhk8HbJqAGwwgFl4Vj5sai1z6Gn1fsHgjl9XwKNFMfcVQdEpumvEE+1nRahuWsd.UnggoUsDXabErcNq0Idj9zSfuyHYXmHgN.ZNVZya7TlmyAYdYXRlZlTNkIcVqFtLRWdBGg8bBq0BfnYKDDmzME0ZMF6axYUgBqHfOSGzcwqvfW5KQghyN6krKVb1oudd34xW1tBkwv9HNgFXuNFVVdHDFxs2AAILLlujl86Y2Smai4Unc5RCfWJbg9q3BfBSDbiHd2HtH6BjTlNJja4VsvtfPIbERM39wE61xAaSBvy3xv.tJRxXaz7SDBKDHdYyDh4RVUP99MgDsBshBbENRgoy+YSkeJgJqBJKY+jVeD3vA7p3cv9E3rHLnR4RqO7k1B4GJWqZ0tfQrkOHR0KV29x1EVGANY38X79+pP0osunc+2pO8zJoAjLj5imoKi.PnROwb5glBWaKjeDNgc9GH9CDvfTMF2l2FayENu88I711e9bKr5dyjfLh0HwlBysfJT26IAsaP5z0GK7UmrhRZrSGba.FHldfoDJ1BQHA9PPztWTwlFn3IjiQ8K31SnKA5EbVHpkeJssUfB2fyYjlQbbAcF2l3waeIamYE4wO354GtkHzS7d1OUY.aQhQIt35zfC1AELy18DbNxbtg5ZJaHaGSyJTgdMK7VTNdC44CHe6A4sGjUqVYxKVc9P9TVrUYZCQvBAQcZhY5PgXgPktzkOmXzJe5pvDsERCVKfv2nKN98j5+NYTr0HFTgxtiGagvu3xhtmNtnaCehGlYP7DUb6evzP5.5sLMNHErXDmSCjJXBKQLomrVlRQGA4lzRkjlwt9AqsDhiD8Mh8Ev+5hYbh.FMWBuCz0V0EYJqkvg2kS6Jc13LHvlFI28SS1zaTdW8N8cRM4v22g344iqQCIhHu9.DFZap0SChR1uunh198nVkYHOB8lLZT2dQ0QQs8QvCRwn8q382HFFAf5EAMISOWf33ZLCgOq2LVzvM.vhc0CZCNrPtCNae1LmkIyb4QzbOqUMB2sc116XYXuPt0ya6MdzqSYo54jXr4rV4COryYM6nOm0j8mXte4W41eRqj4.Fx7xFFKASNkBxj0tSH7QkyXh50B1ANnVi5iXCB3ieTMMYtQNqPNj1wlr3W2RB4GmLXYJwwGC9LV0P+eHgnNMhSB1FFelQfh2V2JpSC3ZktXvTCBv9ghFoiIZunde1dMVafC7ju72vSLSGw6lwLc5wTGRNuBRNg0sQ6fkyBKQi2P9dKJqi8MwAXl.qbFRIgebTuBc2Q9Jza3xASXSFJHrKMD6nq4F3NjMglfgonNfDE038n9RTLccLdTPZUqHkZUBnXE.JzV2jk6QrnNQHEJkxf2Soo0IZCV73RKGffDjFXvy81HzE.FANqmiUKBt7k7jjitfIjKpSdUDyChgtCq1ZtQq1Z5d7ZqOihtS775qJLh15QUAf+sy0bzzbdpd1np47xPWSeXD29sAZgh748nl9LoXTxtsoAjTY.0wPojs2FmJwJSGBtWFbUpDJmqbcrOFEpcN8cJWEt7GhA3D9PhEO6ePnLiWuokxbsEERre4XdzwOtMO5y7IzLC4iu+z+SGm9WGCCM1L9.phjshV5T+5TZmFj85kS9we6a+mkVB0oKzJMlT44l62Jcar5qZES6qd3C+gRKw1c.Z+dI84YK+q68GkVggw6g0x5gk8ckNxFb8Eca+SnP4WSMVoDdmT86zvpjj3.VUbKst3uU49LpS1tMWujwJXrm3KxnKwO+0OtTO55B7n+pvuTpJ890fMDP360WOe4OUdUx9nZrT4A5ftIFtLb5VdO43aT4ftW1ozH37pKl8pKl8pKl8R+EyFNj.kAO9DAOuEb4lh1x4dr+uevmWDAxWD6QGjKidGW0mSWTicRIEvuCj+ammxZcw61NC9YzML5.2A6NttoU09Dr3gUv4NrBN+gUvENrBdkCqfW8vJ30d5BJth7Mh3zNpyIFFqWaY4+1CSS0mLPdjw3efQSF.Z

The HISE source might give you some clues.