forked from M-Labs/artiq
fir/ParallelHBFUpsampler: add headroom (gain=2)
This addresses part of #743
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@ -156,7 +156,7 @@ class ParallelHBFUpsampler(Module):
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i = [self.i]
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for coeff in coefficients:
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self.parallelism *= 2
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hbf = ParallelFIR(coeff, self.parallelism, width, **kwargs)
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hbf = ParallelFIR(coeff, self.parallelism, width + 1, **kwargs)
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self.submodules += hbf
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self.comb += [a.eq(b) for a, b in zip(hbf.i[::2], i)]
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i = hbf.o
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