Is simultaneous advanced wave synthesis possible with TVout ?

Using Arduino Audio
13

You can have my dsp filter code for free.
It's a 18dB lowpass resonant filter and it sounds awesome.

input and output are signed 16-bit int and CUTOFF and RESONANCE are 8-bit unsigned int.

Uses only 132 CPU cycles.

// 18dB 3pole lowpass DCF with resonance. The MX-filter 
      coefficient=CUTOFF^0xFF;   
      #define M(MX, MX1, MX2) \
      asm volatile ( \
        "clr r26 \n\t"\
        "mulsu %B1, %A2 \n\t"\
        "movw %A0, r0 \n\t"\
        "mul %A1, %A2 \n\t"\
        "add %A0, r1 \n\t"\
        "adc %B0, r26 \n\t"\
        "clr r1 \n\t"\
        : \
        "=&r" (MX) \
        : \
        "a" (MX1), \
        "a" (MX2) \
        :\
        "r26"\
      ) 
      M(MX1, M0, coefficient);
      M(MX2, M1, CUTOFF);
      M0=MX1+MX2;
      M(MX1, M1, coefficient);
      M(MX2, M2, CUTOFF);
      M1=MX1+MX2;
      M(MX1, M2, coefficient);
      M(MX2, M3, CUTOFF);
      M2=MX1+MX2;
      M(MX1, M3, coefficient);
      M(MX2, M4, CUTOFF);
      M3=MX1+MX2;
      M(MX1, M4, coefficient);
      M(MX2, M5, CUTOFF);
      M4=MX1+MX2;
      M(MX1, M5, coefficient);
      M(MX2, M6, CUTOFF);
      M5=MX1+MX2;
      M(MX1, M0, RESONANCE);
      M6 = input-MX1;
      output=M0;
code]