Let n,b≥2 be two positive integers. For D={0,1,⋯,b−1}, let the self‐similar measure μbn,D be defined by μbn,D=1b∑d∈Dμbn,Dfalse(bnx−dfalse). It is known [18] that μbn,D is a spectral measure with a spectrum
Λfalse(bn,Cfalse)=∑j=0finiteajbnj:aj∈C,where C=bn−1false{0,1,⋯,b−1false}. In this paper, we give some conditions on τ∈Z under which the scaling set τΛ(bn,C) is also a spectrum of μbn,D.
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