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this is part 2/2.

song chooser:
sr=44100,t||(oldt=0,realt=0,olddiff=0,song=0),songNames=["42 melody","sierpenski harmony","street surfer"],songCode=[(t)=>(t*(42&t>>10)),(t)=>(t&t>>8),(t)=>(t&4096?t/2*(t^t%255)|t>>5:t/8|(t&8192?4*t:t))],difference=t-oldt,oldt=t,difference,realt++,sign(difference)!=sign(olddiff)?(song+=sign(difference),realt=0):difference/olddiff==2?(song+=sign(difference),realt=0):0,olddiff=difference,song=min(songCode.length-1,max(0,song)),realt%1024?songCode[song](floor(realt*8000/sr)):(()=>{throw songNames.map((a,b)=>((b==song?"\n>\xa0":"\n\xa0\xa0")+a)).join("")})()

from original: "detect your samplerate [link to "unnamed, for song chooser (detect your samplerate)"], then put it into sr and the sample rate part (important! it will not work otherwise)

use the play buttons to select the song"
released january 1, 2024. bytebeat, 44100hz.
remix of (just includes) stephanshi's minification of a beat by skurk & raer, erroneously referred to as "street surfer". original skurk beat at https://www.pouet.net/topic.php?post=388479 , raer's modification at https://www.pouet.net/topic.php?post=388494 , and stephanshi's minification at https://dollchan.net/bytebeat

unnamed, for song chooser (detect your samplerate):
sr=100000,
t||(realt=0),realt++,(()=>{throw floor(sr*realt/t)})()

released january 1, 2024. bytebeat, 100000hz.
original.

uwa!!:
old version: sr=48000,tempo=280,
t?0:(R=new Array(RL=floor(sr*0.3)),RI=0,N1={N:0,D:0,L:0,wave:(p)=>(4*((p%1)-(p%0.5))-1),l:0.1,d:.4},N2={N:0,D:0,L:0,wave:(p)=>(4*((p%1)-(p%0.5))-1),l:.05,d:.5},D={N:0,D:0,L:0,wave:random,l:0,d:.1,p:1}),nl=(sr*60)/tempo,ni=floor(t/nl)%32,pt=floor(t/(nl*32)),n1=[22,,20,22,15,,13,15,10,,8,10,5,,,,8,,6,8,13,,,,8,,6,8,16,,,],n2=!(pt&1)?[-4,,-2,,0,,,,-4,,-2,,0,,,,-5,,-3,,-1,,,,-7,,-5,,-3]:[-4,,-2,,0,,,,-4,,-2,,0,,,,-3,,-1,,1,,,,-7,,-5,,-3],DA={l:.05,d:.1},DB={l:.2,d:.1},DC={l:.4,d:.04},d=[DA,,DC,DA,DB,,,DC,DA,,DC,DA,DB,,,,DA,,DC,DA,DB,,,DC,DA,,DC,DA,DB,,,,DA],U=(N,n)=>(floor(t%nl)==0?(N.p?(N.l=n[ni]?.l||N.l,N.d=n[ni]?.d||N.d):(N.N=2**(n[ni]/12)||N.N),N.D=typeof n[ni]=="undefined"?N.D:sr*N.d):(N.D--)),P=(N)=>(l=N.l**(sr/48000),N.L=(1-l)*N.L+l*N.wave(t*(440/sr)*N.N)*max(0.,N.D/sr/N.d)),U(N1,pt<4?n1:pt<6?[]:pt<8?n1:[]),U(N2,pt<8?n2:[]),U(D,pt<4?[]:pt<8?d:[]),RI=++RI%RL,R[RI]=0.3*(R[RI]||0)+P(N1)*.4+P(N2)*.2+P(D)*.9

new version: sr=48000,tempo=280,
t?0:(R=new Array(RL=floor(sr*0.3)),RI=0,N1={N:0,D:0,L:0,wave:(p)=>(4*((p%1)-(p%0.5))-1),l:0.1,d:.4},N2={N:0,D:0,L:0,wave:(p)=>(4*((p%1)-(p%0.5))-1),l:.05,d:.5},D={N:0,D:0,L:0,wave:(()=>(random()-0.5)),l:0,d:.1,p:1}),nl=(sr*60)/tempo,ni=floor(t/nl)%32,pt=floor(t/(nl*32)),n1=[22,,20,22,15,,13,15,10,,8,10,3,,,,8,,6,8,13,,,,8,,6,8,16,,,],n2=!(pt&1)?[-13,,-9,,-2,,,,-13,,-9,,-2,,,,-15,,-11,,-4,,,,-15,,-11,,-7]:[-13,,-9,,-2,,,,-13,,-9,,-2,,,,-10,,-6,,1,,,,-10,,-6,,-3],DA={l:.05,d:.1},DB={l:.2,d:.1},DC={l:.4,d:.04},d=[DA,,DC,DA,DB,,DC,DA,,,DC,DA,DB,,,,DA,,DC,DA,DB,,DC,DA,,,DC,DA,DB,,,,DA],U=(N,n)=>(floor(t%nl)==0?(N.p?(N.l=n[ni]?.l||N.l,N.d=n[ni]?.d||N.d):(N.N=2**(n[ni]/12)||N.N),N.D=typeof n[ni]=="undefined"?N.D:sr

((t&255)*((t*((t>>10|t>>14)&15))&192)>>7)+((t&4095)<2048?(((1<<18)/(t&4095)+10000)&128):0)

ejoi

biza

hodut

ufuva

//rem!x (44 khz)
p=v=>2**(v/12),z=12*(t>>18&1),(((t>>3&t>>8)^(t>>8&t>>7))&127)+(64*abs(sin(t/50*p([0,3,7,12,,19,,7][t>>11+(t>>13&3^t>>14&1)&7]+z))))+(sin(3e4/(t&16383))*20+32)+((sin(t*t)*20)&-t>>8&31)

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))*(1048576<t)+(t&16383)*(-t>>3&511)/7E4*random()*(524288<t)

SAMPLE_RATE

t?0:v=Array(r=48e3).fill(0),f=floor,s=f(t/12e3),m=sin(t/((25+f(t/192e3)%4)-s%16))+v.shift(),b=sin((s%4?1e2:1e4)/(t%12e3)),n=!(f(t/6e3)%2)*(random()*((t/48e3%1)-1))/2,v.push(m/3),(m+b+(f(t/r)%2)*n)/3

sin(t/([25,25,22,23][0|t/48e3%4]-(0|t/12e3%2)))*(t/6e3%1-1)-sin(t/1e5)/1.5-1

#include<stdio.h>
#include<stdlib.h>
#include<math.h>

#define r 48000

//Set output length (in seconds) here!
#define time_seconds 30

int main(){
  double t;
  double out;
  double a[r]={0};

  FILE *f = fopen("bb.raw","wb");

  while(t<(r*time_seconds)){
    out=sin(t/(25-floor(fmod(t/12000,16))))/3+a[(int)fmod(t,r)];
    a[(int)fmod(t,r)]=out/1.4;
    fwrite(&out,sizeof(double),1,f);
    t++;
  }
  fclose(f);
  return 0;
}

10*(t>>6|t|t>>(t>>16))+(7&t>>11)*5*t&t>>4|t*(5|t>>13&3)>>(~t>>11&1)&128|t*(t>>11&t>>13)*(~t>>9&3)&127

5*t&t>>4|t*(4|t>>13&3)>>(~t>>11&1)&128|t*(t>>11&t>>13)*(~t>>9&3)&127

t%25-(t>>2|15*t|t%227)-t>>3|(t>>5&1333*(t<<5)|(t>>3)%1)/(t%18|t%1280)

~t>>3&(t>>11&1?5:4-(t>>12&1))*t&(t>>7)+t*(4|t>>13&3)>>(~t>>11&1)&128|t*(t>>11&t>>13)*(~t>>9&3)&127>>(t>>(t>>12&15))>>t

t-(t>>6)<<(t>>12)/t>>(t>>1+t<<t>>2)<<2

t*t>>(t>>12&t>>3)^(t>>1%t%t>>5)

t/t<<(t>>8^t^t>>2)

t^(t>>11)+t<<(t>>9&t>>10)&t<<2 

t/=4,a=random()*(3E4/(t&4095)),b=3E4/(t&4095),r=(3*t&t>>10)&127,
[b,a,b][(t>>12)&1]+r

 e=t/512,sin(e*(t&t>>12))%cos(e*(t&t>>12))

e=t/512,sin(e*(t&t>>12))*cos(e/(t&t>>12))

e=t/512,sin(e*(t&t>>12))/cos(e*(t&t>>12))

T=sin(24*cbrt(t%4096)),O=sin(24*cbrt(t%2048)),N=sin(24*cbrt(t%1024)),[T,T,O,N][t>>13&3]

x=t/64,(sin(sin(sin(x*2**(parseInt(('ABOBAI')[(t>>12)%6],36)/12)))+cos(x))*(-t>>6&127))+128

(((t/2*2**([5,8,12,15,19,15,12,8][t>>13&7]/12)*(t&262144?1:6/5)&128)+(t*(t&262144?1:6/5)&127&t>>8)*(t>1048575))*max(0,min(1,16-((t&1048575)/65536)))^(random()*128&~t>>8)*(t>2097151))*(t<4194304)

t/2/(1+(t>>17&7))**2&111&t>>12?t>>9:t>>7

t/2/(1+(t>>17&7))**2&111&t>>12?t>>9:t>>7