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1992-05-22
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Errata for "The Fast Wavelet Transform"
Within the article, some typographical ommissions were
discovered in relation to the conditions a set of a must satisfy
k
for them to be a valid set of wavelet coefficients. The second
paragraph on page 17 should read:
"Now, not just any set of a can be used as wavelet
k
coefficients. Certain wavelet conditions must be
satisfied for a set of a to qualify as wavelet
k
coefficients. The conditions are shown in Example 1(d)
_
where a is the conjugate of a .(a can be complex.)"
k k k
The correct set of equations for Example 1(d) is listed below:
Σ a = 1 Σ a = 1
kεZ 2k kεZ 2k+1
_ _
Σ a a = 0 for l ╪ 0 Σ a a = 2
kεZ k k+2l kεZ k k
Mac A. Cody