forked from M-Labs/artiq
sawg: reduce coefficient width
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@ -146,9 +146,9 @@ class Channel(Module, SatAddMixin):
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self.submodules.a1 = a1 = SplineParallelDDS(widths, orders)
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self.submodules.a2 = a2 = SplineParallelDDS(widths, orders)
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coeff = [[int(round((1 << 26) * ci)) for ci in c]
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coeff = [[int(round((1 << 18)*ci)) for ci in c]
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for c in halfgen4_cascade(parallelism, width=.4, order=8)]
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hbf = [ParallelHBFUpsampler(coeff, width=width, shift=25)
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hbf = [ParallelHBFUpsampler(coeff, width=width, shift=17)
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for i in range(2)]
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self.submodules.b = b = SplineParallelDUC(
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widths._replace(a=len(a1.xo[0]), f=widths.f - width), orders,
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