dx::test::device< super_device_t, _engine_t >::impulse Struct Reference

one impulse test: what an analog loop keeps is its timing alone More...

#include <dx_test_device.h>

Collaboration diagram for dx::test::device< super_device_t, _engine_t >::impulse:

Public Attributes
int32_t	deviation {}
	dB the loop stands off its target where the level's range cannot take it up: 0 right, below too quiet
double	energy {}
	this period's summed input power
uint32_t	latency {}
	the last period's round trip, 0 while none was found - a loop never has 0
double	level {ceiling}
	the impulse's peak, full scale 1
mask	mask
uint64_t	peak {}
	this period's loudest input magnitude
uint32_t	period
	samples from impulse to impulse: longer than the round trip, which it measures modulo
struct {
double   angle {}
	the last period's phase More...
int32_t   deviation {}
	as the impulse's, the sine's loop More...
double   iq [2] {}
	this period's input against the reference More...
double   level {ceiling}
	the sine's peak, full scale 1 More...
double   phasor [2] {1., 0.}
	the reference, turned a sample at a time: cos, sin More...
double   step [2] {1., 0.}
	one sample's turn, none without a sine More...
double   tolerance {}
	half a sample's turn More...
}	phase
uint32_t	position {}
	its phase in the period
uint64_t	sample {}
	the running sample count out and in alike: an impulse leaves at every multiple of period

Static Public Attributes
static constexpr double	ceiling {.9}
	the loop's peak wanted, the level's range - ceiling the clip limit in as well - full scale 1
static constexpr double	floor {.001}
static constexpr double	full {2147483648.}
	full scale of io_t
static constexpr double	margin {100.}
	the power the loudest sample stands above the period's mean to count: 20dB
static constexpr double	target {.25}

Detailed Description

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>
struct dx::test::device< super_device_t, _engine_t >::impulse

one impulse test: what an analog loop keeps is its timing alone

A band limited impulse every period on the lowest masked out channel, the loudest sample of each period on the lowest masked in channel against the rest's noise gives the round trip, a step beyond a sample a slip. The level calibrates itself: each period takes the loop's peak to target, and where the level's range cannot, deviation names the dB the loop stands off it - 0 right, below too quiet, above too loud - the physical gain to change by that much. Optionally a sine in parallel on the next masked pair, its level calibrated the same way on its own: its phase against the reference over each period, a step beyond half a sample's turn a slip - it sees a lost or doubled sample the impulse's tolerance lets pass; a sine off its target has no phase to trust and counts as a slip.

Member Data Documentation

angle

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::angle {}

the last period's phase

ceiling

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::ceiling {.9}

static

the loop's peak wanted, the level's range - ceiling the clip limit in as well - full scale 1

deviation

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

int32_t dx::test::device< super_device_t, _engine_t >::impulse::deviation {}

dB the loop stands off its target where the level's range cannot take it up: 0 right, below too quiet

as the impulse's, the sine's loop

energy

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::energy {}

this period's summed input power

floor

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::floor {.001}

static

full

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::full {2147483648.}

staticconstexpr

full scale of io_t

iq

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::iq[2] {}

this period's input against the reference

latency

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

uint32_t dx::test::device< super_device_t, _engine_t >::impulse::latency {}

the last period's round trip, 0 while none was found - a loop never has 0

level

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::level {ceiling}

the impulse's peak, full scale 1

the sine's peak, full scale 1

margin

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::margin {100.}

staticconstexpr

the power the loudest sample stands above the period's mean to count: 20dB

mask

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

mask dx::test::device< super_device_t, _engine_t >::impulse::mask

peak

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

uint64_t dx::test::device< super_device_t, _engine_t >::impulse::peak {}

this period's loudest input magnitude

period

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

uint32_t dx::test::device< super_device_t, _engine_t >::impulse::period

samples from impulse to impulse: longer than the round trip, which it measures modulo

[struct]

struct { ... } dx::test::device< super_device_t, _engine_t >::impulse::phase

phasor

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::phasor[2] {1., 0.}

the reference, turned a sample at a time: cos, sin

position

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

uint32_t dx::test::device< super_device_t, _engine_t >::impulse::position {}

its phase in the period

sample

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

uint64_t dx::test::device< super_device_t, _engine_t >::impulse::sample {}

the running sample count out and in alike: an impulse leaves at every multiple of period

step

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::step[2] {1., 0.}

one sample's turn, none without a sine

target

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::target {.25}

staticconstexpr

tolerance

template<typename super_device_t, typename _engine_t = typename super_device_t::group_t>

double dx::test::device< super_device_t, _engine_t >::impulse::tolerance {}

half a sample's turn

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The documentation for this struct was generated from the following file:

• dx_test_device.h