AD-muunnokseen liittyviä demonstraatioita

Additional sampling rate and quantization demonstrations

Music: "Under the Bridge"
Sampling rate/Hz (bits=16) Aliased versions Quantization/bits (fs=44100) Non-uniform quantization Dithering
44100.wav 44100.wav
22050.wav 22050_aliasing.wav 44100_8bit.wav
14700.wav 14700_aliasing.wav 44100_6bit.wav 44100_6bit_nonuniform.wav 44100_6bit_dither.wav
11025.wav 11025_aliasing.wav 44100_4bit.wav 44100_4bit_nonuniform.wav 44100_4bit_dither.wav
8820.wav 8820_aliasing.wav 44100_2bit.wav
4410.wav 4410_aliasing.wav 44100_1bit.wav

Speech
Sampling rate/Hz (bits=16) Aliased version Quantization/bits (fs=44100)
44100.wav 44100.wav
22050.wav 44100_8bit.wav
14700.wav 44100_6bit.wav
11025.wav 44100_4bit.wav
8820.wav 8820_aliasing.wav 44100_2bit.wav
4410.wav 4410_aliasing.wav 44100_1bit.wav

Noise shaping

16 kbit/s coding of speech WITHOUT noise shaping.

16 kbit/s coding of speech WITH noise shaping.

Music sample, 4 bit quantization, no noise shaping.

Music sample, 4 bit quantization, with noise shaping.