Mu-law coding/decoding

The Mu-law coding/decoding table for positive and negative values are given in tab. 2. The coding law is:

Positive values:

• 127 decision values are used (n = 128 is a virtual decision)
• x between decision values [x(n),x(n+1)] is coded as 255 - n
• the decoder output value will then be:

  y(n)=[x(n-1)+x(n)]/2 for n=1,...,128

  y(0)=0

a)

Negative values:

• 127 decision values are used (n = 128 is a virtual decision)
• x between decision values [x(n),x(n+1)] is coded as 127- n
• the decoder output value will then be:

  y(n)=[x(n-1)+x(n)]/2 for n=1,...,128

  y(0)=0

b)

[ Index | Previous Paragraph | Next Paragraph ]