Add a "sound engine"

[HerrZatacke]

Help appreciated for generating some more recognizable sounds accompanying user interactions

[Raphael-Boichot]

Some "appealing" sounds found by bytebanging the registers

void poink(){
NR10_REG = 0x15;
NR11_REG = 0x96;
NR12_REG = 0x73;
NR13_REG = 0xBB;
NR14_REG = 0x85;
}

void jump(){
NR10_REG = 0xC6;
NR11_REG = 0x8C;
NR12_REG = 0xB3;
NR13_REG = 0x4F;
NR14_REG = 0xA2;
}

void neogeo(){
NR10_REG = 0x4C;
NR11_REG = 0x70;
NR12_REG = 0xD5;
NR13_REG = 0x8F;
NR14_REG = 0xDF;
}

void boink(){
NR10_REG = 0xB7;
NR11_REG = 0x8B;
NR12_REG = 0xA3;
NR13_REG = 0x30;
NR14_REG = 0x97;
}

void plik(){
NR10_REG = 0x96;
NR11_REG = 0x5A;
NR12_REG = 0x57;
NR13_REG = 0x32;
NR14_REG = 0xBE;
}

void bell(){
NR10_REG = 0x8F;
NR11_REG = 0xE7;
NR12_REG = 0xB5;
NR13_REG = 0x6E;
NR14_REG = 0xB4;
}

void blik(){
NR10_REG = 0x46;
NR11_REG = 0x0F;
NR12_REG = 0x5E;
NR13_REG = 0xA8;
NR14_REG = 0x8F;
}

void piano(){
NR10_REG = 0x8D;
NR11_REG = 0xC6;
NR12_REG = 0x85;
NR13_REG = 0xB0;
NR14_REG = 0x96;
}

[bbbbbr]

You might also consider using the small Sound FX driver CBTFX:
https://github.com/datguywitha3ds/CBT-FX

Then it's easy for people familiar with FX Hammer to create very nice SFX that can be imported.

I just added it into my current project and it was easy.