Bit quantization/reduction effect

• Author or source: Jon Watte
• Type: Bit-level noise-generating effect
• Created: 2002-04-12 13:53:03

notes

This function, run on each sample, will emulate half the effect of running your signal
through a Speak-N-Spell or similar low-bit-depth circuitry.

The other half would come from downsampling with no aliasing control, i e replicating
every N-th sample N times in the output signal.

code

short keep_bits_from_16( short input, int keepBits ) {
  return (input & (-1 << (16-keepBits)));
}

Comments

• Date: 2005-05-30 23:01:56
• By: moc.liamg@codlli

//I add some code to prevent offset.

// Code :
short keep_bits_from_16( short input, int keepBits ) {
    short prevent_offset = static_cast<unsigned short>(-1) >> keepBits+1;
    input &= (-1 << (16-keepBits)));
    return input + prevent_offset
}