When noise is a result of quantization error, we determine
its audibility using the signal-to-quantization-noise-ratio (SQNR),
determined by the ratio of
- the maximum amplitude (
) to
- the maximum quantization noise (1/2 for a linear converter).
To determine audibility, the SQNR is provided in decibels (dB):
dB |
![$\displaystyle =$](img72.png) |
dB |
|
|
![$\displaystyle =$](img72.png) |
dB |
|
|
![$\displaystyle \approx$](img75.png) |
dB |
|
|
![$\displaystyle \approx$](img75.png) |
dB (for 16 bits)![$\displaystyle .
$](img10.png) |
|
``Music 171: Fundamentals of Digital Audio''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
Download PDF version (digitalAudio171.pdf)
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Download PDF `4 up' version (digitalAudio171_4up.pdf)
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Copyright © 2019-10-15 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>