x=(t<<4)^-(t>>4&1),
(x>>5|x>>4)>>(x>>16)

(([1,1,2,3/2,2,9/4, 9/4, 19/8, 19/8, 9/4, 9/4, 19/8, 19/8, 8/3, 8/3, 8/3, 1,1,2,3/2,2,9/4, 9/4, 19/8, 19/8, 9/4, 9/4, 19/8, 19/8, 8/3, 8/3, 8/3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 9/4, 19/8, 19/8, 9/4, 9/4, 19/8, 19/8, 9/4, 0, 9/4, 9/4, 19/8, 8/3, 19/8, 9/4, 2, 0][(t>>13)%64]*t>>2&127)+(t>>7)&128)+([2,1,2,19/8,2,1,2,3,2,1,2,19/8,3,2,2,3, 2,1,2,19/8,3,2,2,3,3,2,2,19/8,2,2,2,3,2,19/6,3,19/8,2,2,19/8,3,2,2,19/6,3,19/6,2,2,3,2,3,19/6,19/8,9/4,2,3,9/4,9/4,4/3,2,19/8,9/4,3,4/3,2][(t>>13)%64]*t>>2&255)/2^(128*sin(8191/(t%16384))^32*sin(4095/(t%8192)))

((t>>9^(t>>9)-1^1)%13*t)|(t&4096?t/2*(t^t%255)|t>>5:t/8|(t&8192?4*t:t))

30*cos(t*2**('B*918/916-918/91B*918/916-918/91>*;2:1;26/;2:1;2>*;2:1;26/;2:1;2A*;291;28/;291;2A*;291;28/;291;2B*=-;,=-91=-;,=-B*=-;,=-91=-;,=-E*>6=4>692>6=4>6E*>6=4>692>6=4>6D*<3:1<380<3:1<3D*<3:1<380<3:1<3D(=4<3=481=4<3=4D(=4<3=481=4<3=4B(:18/:16.:18/:1B(:18/:16.:18/:1B&;2:1;26/;2:1;2B&;2:1;26/;2:1;2@&;,9*;,8/;,9*;,@&;,9*;,8/;,9*;,@%=-;,=-91=-;,=-@%=-;,=-91=-;,=->*=-;,=-92=-;,=->*=-;,=-92=-;,=->,8/6-8/428/6-8/>,8/6-8/428/6-8/=-412/4192412141=-412/4192412141;-6341613/634163;-6341613/634163;,8/6-8/528/6-8/;,8/6-8/528/6'.charCodeAt(t>>12)/12-7)/4,(t%255+t%128+t%64+t%32+t%16+t%127.8+t%64.8+t%32.8+t%16.8)/3)+128

t<<2^t>>4^t<<4&t>>8|t<<1&-t>>4|t>>6&t>>7

10*(t>>7|2*t|t>>(t>>16)+(7&t>>12))

t*(43&t>>10)

10*(t>>7|2*t|t>>t>>16)+(t>>8&5)

t<<1^(t<<1)+(t>>7)&t>>6|t>>4-(1^7&t>>19)|t>>7

(t>>5)*(t>>1)|t>>3

 this.D??=Array(8859).fill(0),B=t/5906,r=B%1,v=1-r,m=B>>6,s=B%64|0,q=s>>4,b=s%16,N=a=>[0,18,20,22.5,24,27,30,32,36][a]*75/56,S=(f,p=0)=>sin((B*f+p)*PI*2)/2+.5,T=(f,p)=>(x=(B*f+p)%1,min(x,1-x)),C=f=>B*N(f[0][q])%1<S(.06)*.8+.1&&9,R=(s,m=9e7)=>(sin(s*m)+1)*m%1,n="6544"[q],l=s>61?5:"6807"[b-11]||n,L=23219>>b,c=13515>>b&1,o=[T(l=N(m>23?(B<1552)*4:m<8?l*=L&1:l&=L|m%8),S(l)/5)*160,T(d=N(s==28?6:s>61?5:b>11?8:n-(!b&q<2))*2,(B*d%1)*R(B|0)*1.5+.25)*(1-r*.75)*45,S(a=N(64967>>b&1&&(b<12|s>61?n:7))/2,abs(S(a/4)-.5)*(v*(s==62|10370>>b&2)+2))*30,C1241,c*C3564,c*C6786,s==26|s==59|!(s%8)&&S(0,2/(r+.16))*27,s%8==4&&R(t/3|0)*v*27,s==63|19524>>b&1&&R(t,400)*max(1-r*1.5,0)*27].reduce((a,b,i)=>a+([[257,261,453,193|(s<61)*260][m],x=511,127>>12-m,x,x,[443,443,3,1][m%4],1][m>>2]>>i&1&&b),0)+D.shift()/2,D.push(m>21&&o),o 

*((t&4096?t%65536<59392?7:t&7:16)^(1&&t>>14))>>(3&-t>>(t&2048?2:10))|t>>(t&16384?t&4096?10:3:2)

 t%(t&t>>1) 

 (t&t>>12)*(t>>5&12)*t>>12 

 0x7E8^(t&t>>12)*t>>12 

 t>>8+t&t 

(128+127*sin(t/10))*((t>>10&3)+1)*(1+cos(t/10))

128 + 127 * sin(t / 1000): Generates a sine wave oscillating between 1 and 255. The frequency is scaled so that it fits within the 8 kHz sample rate. t / 1000 adjusts the frequency of the sine wave.
(t >> 10 & 3) + 1: Extracts a 2-bit pattern from t and adds 1 to make sure the result is always non-zero. This introduces variation based on the bitwise manipulation of t.
1 + cos(t / 5000): Adds a cosine modulation factor. The cos(t / 5000) oscillates between -1 and 1, so adding 1 scales it to range from 0 to 2. This modulates the amplitude of the waveform.

(t*(t>>17&1?t>>16&1?9/8:1:3/4)|t>>6^t>>8|t>>12)%256^1E5/(t%16384)

BPM=120,SAMPRATE=40960,T=t/SAMPRATE*BPM/60*32768,tri=(x,y)=>abs((x%y)-y/2)*2,high=x=>t*2**([0,3.5,7,10.5,14,17.5,21,24.5,24.5,21,17.5,14,10.5,7,3.5,0][(T>>14)&x&15]/12)/4&63,h1=tri(high(15),64),bass=x=>(t/16*[1,1,1,1,1,1,1,1,1.35,1.35,1.35,1.35,1.5,1.5,1.5,1.5][(T>>14)&x&15]&47),b1=tri(bass(15),64),h2=tri(high(13),64),b2=tri(bass(13),64),h3=tri(high(11),64),b3=tri(bass(11),64),kick=sin(sqrt(T/128%256)*16)*32+32,snare=(t*sin(T>>3)*(T>>15&1)&63)*(-T>>13&7)/3.5,[h1,h1+b1,h1+b1+kick,h1+b1+kick+snare,h2+b2+snare,h2+b2+snare+kick,h3+b3+snare,(h3+b3)/3+(h2+b2)/3+(h1+b1)/3+kick+snare][(T>>19)%8]

((t & (t >> 7 | t >> 8 | t >> 20) + t) ^ t)

x=(t,y=256)=>(t/4*(4|7&t>>15)>>(~t>>13&1)&128|t/4*(t>>13&t>>15)*(~t>>11&3)&127)%y,l=16,(t?f+=x(t)-f/l:f=0),[f/l,(x(t)+x(t+1)+x(t+2)+x(t+3)+x(t+4)+x(t+5)+x(t+6)+x(t+7)+x(t+8)+x(t+9)+x(t+10)+x(t+11)+x(t+12)+x(t+13)+x(t+14)+x(t+15))/16]

max(0,min(128,((b=(-t*1.0595**(("0010010030705503"[t>>13&15])-12+3*(t>>18&1))&255),c=(b**3)>>5,(sin(b*(.2+sin(t/6e6))*.2))*c+c)*(-t&8191)>>18)))-((sqrt(t&8183)<<6&64)*(((t>>15)&1)^(t>>13))-(t&15))*(t>2<<19)+((t&16383)*(-t>>3&511)/7e4)*random()*(t>1<<19)

s=t>>17&1,t>>"45"[s]&t*"2256"[t>>13&3]|[1e4,[5e3,5e4][t>>13&1]][s]/(t%[4096,8192][s])