SIM::vco Class Reference

floating point point NCO - numerically controlled oscillator
Core function: SIM::vco.process()
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Inheritance diagram for SIM::vco:

Public Member Functions
	vco ()
	~vco ()
void	set_acc (double a)
void	set_output (const vec &yout)
double	get_acc ()
vec	get_output (void)
mat	process (const bvec &ce, const vec &x)

Detailed Description

floating point point NCO - numerically controlled oscillator
Core function: SIM::vco.process()

Accumulated phase ph is in double fractional format (-1.0..+1.0)
input vector x [vec] is frequency control word - saturated at (-1..+1)
vco output is a matrix mat=[cy|ph] where:
cy is overflow flag: +1 for positive -1 for negative
ph = acc - is accumulated phase in double fractional format

Constructor & Destructor Documentation

SIM::vco::vco ( )

inline

SIM::vco::~vco ( )

inline

Member Function Documentation

double SIM::vco::get_acc

(

void

)

get state of phase accumulator

vec SIM::vco::get_output

(

void

)

get initial output value y0

mat SIM::vco::process	(	const bvec &	ce,
		const vec &	x
	)

process input samples - x[i] for active clock ticks ce[i]

Parameters

ce	- bvec - clock enable vector
x	- vec - input vector - fcw saturated at (-1..+1) in double fractional format

Returns

y - mat - output matrix [cy|ph] cy =(1,0,-1), ph - accumulated phase in double fractional format

void SIM::vco::set_acc

(

double

a

)

set state of phase accumulator

Parameters

[in]

a

- state of phase accumulator in double fractional format

void SIM::vco::set_output

(

const vec &

yout

)

set initial output value y0

Parameters

[in]

yout

- [vec] = [cy|ph]

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The documentation for this class was generated from the following files:

• C:/jobs/vcc/itpp_sci/include/sim/sim_vco.hpp
• C:/jobs/vcc/itpp_sci/sim_lib/code/sim_vco.cpp