p=Array.from({ length: 12 }, (_,  i) => 1.05946309 ** (i))[(t>>11)%16]*t*4

function syn(t, a, f, b, n, o) {
    out = 0;
    O = max(t - o, 0);
    for (; n > 0; n--) {
        F = n * f * sqrt(1 + b * n ** 2);
        A = a * exp(-1e-4 * 2 * PI * F * O);
        out += A * sin(2 * PI * F * t);
    }
    return out;
}

r = [70, 73, 68, 77, 68, 65, 70, 73, 73, 70, 65, 68, 77, 68, 73, 70];

M = n => n <= 0 ? 0 : 440 * 2 ** ((n - 69) / 12);
X = [0];
return (t, s) => {
    if (t == 0) X = [0];
    if (t % 1 == 0) X[0 | t % 32] = [0.1, M(r[t % 16]), .5, 7, t];
    return X.map(x => syn(t, ...x)).reduce((a, x) => a + x);
}

 t/=4,a=(((t*[7,5,6,2,4.5,5,9,4,6,5,6,3,4,5,6,4,5,4,6][(t>>12)%15])|t>>4)&255)%256/3,b=3E4/(t&4095),c=random()*(-t>>6&31)*2,([a,a,a,a+b,a+b,a+b,a+b,a+b+c,a+b+c,a+b+c,a+b+c,a+b+c,a+b+c,a+b,a+b+c][(t>>15)%15])

((t>>5|t>>4)>>(t>>15))*t&t>>4

https://dollchan.net/bytebeat/index.html#4AAAA+kYr0bc10SnR0iiJK9HWKLGzMzStMdSM0yjRNTSyMIgr0QSKGGjWmLqa6GuUqJkYWJpqahcl5qXk52poamnoAjWYqRkbamoZAQA

t*((((((t>>12|t>>6|t>>1)-(t>>12&63)&63&~t>>7)^(t>>12^t>>11)&~t>>9)>>(t>>10&3)%((t>>12&255)+1))-(t>>12)&31)*(t>>11)&25)|((t>>1&4095)>3100?(t&t>>3)*t:((t>>2&255)>16?~t>>4:t*t))

C=t=>(t-=(1<<13),t+16384>>15&t>>13&t>>14&1?128*atan(sin(t/16)+sin(t/9))/1.0008**(t&4095):0),
S=(x,y)=>int(x)?(.96*t*2**(x/12))&y:0,
m1rec=[9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,6,0,7,0,6,0,7,0,6,0,9,9,0,9,0,0,4,0,7,0,6,0,7,0,6,9,9,0,9][t>>12&63],
m2rec=[9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,5,0,7,0,5,0,7,0,5,0,9,9,0,9,0,0,5,0,7,0,5,0,7,0,5,9,9,0,9][t>>12&63]+([9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,9,0,7,0,9,0,7,0,9,0,2,2,0,2,0,0,6,0,7,0,6,0,7,0,6,0,9,9,0,9,0,0,4,0,7,0,6,0,7,0,6,9,9,0,9][t>>12&63]==0?0:4),
mel=S(m1rec,255)/2+S(m2rec,255)/2,
b=[[-10,-15],[-3,-8]][(t>>13)-5>>4&1][(t>>13)-5>>1&1],
a=[[2,6,9],[1,4,9]][(t>>13)-5>>4&1][(t*3>>12)%3],
N=[32,24,64,48][2^t>>12&3]*random()*0.9994**(t&4095),
thigny=S(a+12,~t>>6&255)/2*0.9999**(t-(5<<13)-8191&32767),
bass=(S(b,128)+S(b-12,128))/2*.99985**(t-(5<<13)&16383),
ap=x=>max(0,min(x,255)),
[ap(mel/2+bass+thigny+N+C(t)/2+64)/1.5,ap(ap(mel/2+bass+thigny+N+C(t)/2+64)-(t/128&127)+64)][(t)%2]

(x='9x03i4dyt8h457c3y84etyhiuny534c8n7by2c5nvy79487n9y2459ny79y7nv2gt49y7nb34rcy7n9rt794vtyn7n9y3e5y7nh78ncv356ht ynnnnnnnnnnnnnnh9t6v5399t2v9fhty6436th8frvwy488frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwy8frvwyrv7iyg4t7yhgi34htryh45t7u3cy975ucfhireygIUYH9RC78RTR	89Q6T87T680t7g097TY08TH6CEH07Y97TNPC9NT797PCt79pjep97j	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} ´3v6y8bf57hc4c6y86y86y86y86y86y86y8c6y8c6y8c6y8c6y8c6y8c6y86y86y86y86y86y86y86y86y86y86y86y86y86y86y8c6y8c6y8c6y86y86y86y8´bh866666666666666666nnnn´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´nh7nh7hn7hn7nh7nh7nh7nh7nh7nh7hn7hn7nh7nh7nh7nh7nh7nh7hn7hn7nh7nh7nh7nh7nh7nh7hn7hn7nh7nh7nh7nh7nh7hn7hn7nh7nh7nh7n7nn7cgt349cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cg9cgcggncdfksuvhNICTGFUWERXRCTGBBc3t4+7} ´3v6y8bf57hc4c6y86y86y86y86y86y86y8c6y8c6y8c6y8c6y8c6y8c6y86y86y86y86y86y86y86y86y86y86y86y86y86y86y8c6y8c6y8c6y86y86y86y8´bh866666666666666666nnnn´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´´').charCodeAt((t>>4)%(x.length/ (t>>10 & 2047)))

v=T=>(T*1.25%320&128)/4+(T*1.25*(1+(.00048828125*t/T))%320&128)/4+(T*1.25*(1+(.00048828125*t/T)*2)%320&128)/4+(T*1.25*(1+(.00048828125*t/T)*3)%320&128)/4,v(t*[1,1.5,1.5,1.8,1.35,1.35,1.5,1.2,1.2,1.35,1.125,1.125,1.2,1.125,1,1.35][(t>>13)%16])

t*(((t>>9^(t>>10)*1.5-(t>>10&128))&255)<128?(t>>9^(t>>10)*1.5-(t>>10&128)):-(t>>9^(t>>10)*1.5-(t>>10&128))&255)

t=t/2,sin(t&t>>12)/3+sin(64*pow(16384,-t/2048%8))/2.5+random()*'1000'[t>>10&3]/3+atan(tan(t|t/1.5))/4*(-t>>4&255)/256+(atan(tan(t|t/1.5))/4*(-t>>7&255)/256)*[0,1][t>>15&1]
//july 25 2022

BPM=200,SAMPRATE=40960,c=(x,y)=>x%256*(y),T=t/SAMPRATE*BPM/60*16384,fd=(x,y)=>x%256*(y&2047)/2048,I=3,err=0/0,A=[err,err,1,1,I,I,1,I,1,I,err,err,I,I,1,I,err,err,err,err,I,I,1,I,1,I,err,err,I,I,1,I][(T>>12)%32],B=[err,err,err,err,I,I,1,I,1,I,err,err,I,I,1,I][(T>>12)%16],ABsnarehi=fd(t*tan(t>>[A,B][(T>>17)%2])/8&128*([[err,err,1,1,2,2,1,2,1,2,err,err,2,2,1,2,err,err,err,err,2,2,1,2,1,2,err,err,2,2,1,2][(T>>12)%32],[err,err,1,1,2,2,1,2,1,2,err,err,2,2,1,2,err,err,err,err,2,2,1,2,1,2,err,err,2,2,1,2][(T>>12)%32]][(T>>17)%2]>0),-T>>[2,2,2,2,2,2,1,2,1,2,2,2,2,2,1,2,2,2,2,2,2,2,1,2,1,2,2,2,2,2,1,2,/**/2,2,2,2,2,2,1,2,1,2,2,2,2,2,1,2,2,2,2,2,2,2,1,2,1,2,2,2,2,2,1,2][(T>>12)%64]),A=32768,ABkick=((sqrt(T%(A/2**[-1,-1,,,,,,,,,2,2,,,,,2,2,2,2,,,,,,,2,2,,,,][(T>>12)%32]))*64)^(sqrt(T%(A/2**[-1,-1,,,,,,,,,2,2,,,,,2,2,2,2,,,,,,,2,2,,,,][(T>>12)%32]))*16))%256|0,AB=ABkick/2+ABsnarehi,part1=((T?(n=(p=t*2**('00113317'[7&T>>14]/12),p^p*0.5>>!(T&131072)>>3),l+=((n&255)-l)*(-cos(T*PI/8192*'22334628'[7&T>>14])+1)/2):l=0)/128-1+(T>>19&1)*AB/128)/3+((T?(n=(p=t*(2**(1/3))*2**('00113317'[7&T>>14]/12),p^p*0.5>>!(T&131072)>>3),l+=((n&255)-l)*(-cos(T*PI/8192*'22334628'[7&T>>14])+1)/2):l=0)/128-1+(T>>19&1)*AB/128)/3+((T?(n=(p=t*(2**(2/3))*2**('00113317'[7&T>>14]/12),p^p*0.5>>!(T&131072)>>3),l+=((n&255)-l)*(-cos(T*PI/8192*'22334628'[7&T>>14])+1)/2):l=0)/128-1+(T>>19&1)*AB/128)/3,part2bassM=(t*2**(parseInt('87CF'[(T>>16)%4],36)/12)/4%256),part2bassA=(c(part2bassM,abs(((T+262144)/32768%16)-8))/2%256)/256,part2bass=b=(abs(((c(part2bassA*128%256,abs(((T+262144)/32768%16)-8)*2)-128)%256)-128)%256)/128-1,hI=(t*2**((parseInt('15C15CA804A04ADC58F58FDC37D3DCAC'[(T>>13)%32],36)-1)/12)/1.25)%256/256,h=c(abs(((hI^1/hI*64)%256)/128-1),hI*4)%1,part2=part2bass/2+AB/256+(T>>19&1)*h/1.5,part3=((T?(n=(p=t*(2**(1/6))*2**('00113317'[7&T>>14]/12),p^p>>!(T&131072)>>3),l+=((n&255)-l)*(-cos(T*PI/8192*'22334628'[7&T>>14])+1)/2):l=0)/128-1)/2+((T?(n=(p=t*(2**(-1/6))*2**('00113317'[7&T>>14]/12),p^p>>!(T&131072)>>3),l+=((n&255)-l)*(-cos(T*PI/8192*'22334628'[7&T>>14])+1)/2):l=0)/128-1)/2+AB/128-0.5,part4=((part1-part3)*2+h+b)/2,X=[part1,part2,part3,part4][(T>>20)%4],throwfunc=x=>T&1023?0:(()=>{throw x})(),X+throwfunc(" \n X's Rooms OST - is X_Roomskid enraged..? (X_Roomskidd bossfight phase 2)\nbar: " + (((T>>20)%4)+1) + "\nprogressbar: " + ["||","|=|","|==|", "|===|"][(T>>18)%4] + "\neach '=' is approximately 25% of progress")

(t>>9&6?0:9001/(t%4096)-t/9&8?-1:0)^t>>4&t*(3&t/(1+(t>>14)%8)^t>>(t>>9&8?19:20)*(t>>11))

((3*t^t>>6|t))^(random(48148822033022)*-t>>8&31])*2|3E4/(t&4095)

return (t,s)=>(t*=s,t*(42&t>>10)&255)/128-1

return t=>(t*=8E3,t*(42&t>>10)&255)/128-1

return (t,s)=>(t*=s,t*(4|t>>13&3)>>(~t>>11&1)&128|t*(t>>11&t>>13)*(~t>>9&3)&127)/128-1

t/=48E3,s=s=>2**(('023578'[s%7|0]||10)/12+(s/7|0)+7.5),o=(t,b)=>(O=[O=t>12&&sin(b*200)/4+(t*s('0035'[t/3&3])/4%1>t/3%1)/4*b||0,O],(T=>{for(i=0;i<9;i++)(N=t-3/8*i)<0||(n=N*s(N%3*4-(N/3&2)+7),O[i%2]+=N<132&&T(n+N%3/9*T(n/((N/3&3)+1)))*(1-N*4%1)/3*.6**i)})(t=>abs(t%1*4-2)-1),O),t>127?o(t+4):o(t>48?(a=t%1,x=t*2&7,(t/4|0)*3+(t>96?(t&3)+a-(x>3):[a,(t&3)+[a%(1/12),(a-1)**2,a,a-.5,a*3/2,a*2/3,a-1,a-1][x],[a*3/2,a,a*3/2,(a-1)**2,a,a-.5,a*2/3,a*2/4][x]][t/16-3|0])):t,t<24||(t*(t/8-13|0?2:1)%1)**.4)

 t*(0xCA98CA98>>(t>>9&30)&15)|t>>8|4000/(t&4095)|t>>(t&4096?8:9) 

(t-(t>>4&t>>8))/((t-(t>>4&t>>8))&(t-(t>>4&t>>8))/4096)*128

 t/(t&t>>12)