HG_REPOSITORIES/LPP/INSTRUMENTATION/SOLO_LFR/LFR_EMULATOR Commit - r1:c74d16760597

p.367 "Digital Signal Processing with FPGA"

paul -

r1:c74d16760597 default

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r1:c74d16760597

butterfly_processor.py created 644 +14 0

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	1	# compute the two scaled butterfly equations
	2
	3	class ButterflyProcessor(object):
	4	"""docstring for ClassName"""
	5	def __init__(self, arg):
	6	super(ButterflyProcessor, self).__init__()
	7	self.arg = arg
	8
	9	def butterfly(self):
	10	Dre = ( Are + Bre ) / 2
	11	Dim = ( Aim + Bim ) / 2
	12	Ere = ( Are - Bre ) / 2
	13	Eim = ( Aim - Bim ) / 2
	14

efficient_complex_multiplier.py created 644 +13 0

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	1	# compute the complex twiddle factor multiplication R + jI = (X + jY) x (C + jS)
	2
	3	class EfficientComplexMultiplier(object):
	4	"""docstring for ClassName"""
	5	def __init__(self, arg):
	6	super(EfficientComplexMultiplier, self).__init__()
	7	self.arg = arg
	8
	9	def multiply(self, X, Y, C, C_plus_S, C_minus_S):
	10	Z = C * ( X - Y)
	11	R = C_minus_S * Y + Z
	12	I = C_plus_S * X - Z
	13	return [R, I]

efficient_complex_multiplier.pyc created 644 binary 0 0

NO CONTENT: new file 100644, binary diff hidden

main.py created 644 +7 0

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	1	from efficient_complex_multiplier import EfficientComplexMultiplier
	2
	3	efficientComplexMultiplier = EfficientComplexMultiplier(0)
	4	res = efficientComplexMultiplier.multiply(70, 50, 121, 160, 82)
	5	print res
	6	print res[0]/128
	7	print res[1]/128 No newline at end of file

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