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How the measure works
An high fidelity audio system
The ADDC measure is as precise as you wish
Show off some ADDC measure numbers
The ADDC measure full potental has still to be developed

How the ADDC measure works


The ADDC measure does not contain any out of control approximations and produces results which are mathematically and physically rock-solid.

Mainly it is able among other things, to detect the output inaccuracy of a given system with a really high precision, so giving evidence to phenomenon and effects generally considered hardly measurable.

No assumptions at all

Every physical entity is obtained making no assumptions on the system being investigated, which is simply considered as an IN-OUT black box made of everything is considered relevant.

No steady state, or linear time invariant, or minimum phase, or expected statistical properties or whatever else hypothesis are made: the measure sees and reads from an IN-OUT black box. Full stop.

Exploding any high fidelity audio chains in their real operative conditions

Audio systems to be measured can be made of any high fidelity equipments, like audio source equipments, audio CD or other media players, DACs, amplifiers, preamplifiers, signal and power cables, speakers, earphones, as well as power filters, environmental noise, operative conditions and whatever else is thought to have any effects on the reproduced signal.

Results are as precise as needed

To make results as exact as possible the ADDC measure accepts an error threshold as one of its input parameters, that is a freely settable maximum inexactness upper bound which allows to achieve almost any (physically meaningful) wished precision. Among other aspects, it becomes crucial when the output inaccuracy to cope with is incredibly small and could then be really hardly detectable in any other way.

As an example the ADDC measure can detect a random output inaccuracy 10-9 times the output amplitude with an inexactness less than 4·10-8 % (0.00000004 %), that is the precision achieved when recognizing such a tiny inaccuracy is less than 0.4 parts per billion.

In general, when the output inaccuracy is tiny, the underlying theory makes it possible to push the precision of the results to almost whatever (physically meaningful) value.

On the opposite side the ADDC measure can cope with huge output inaccuracies as well. For instance it can detect random output inaccuracies having the same average level of the output amplitude with an inexactness not greater than 0.5% of the output level, or roughly exhibit a 0,02% inexactness when the output inaccuracy amplitude is 1/5 of the output level, (both of them being really bad conditions).

The same precision applies to any  physical parameters the measure gives

In addition to the output inaccuracy, other already well known physical entities emerge as well from the ADDC measure, they also with the same precision.

A potential to be further developed

The ADDC measure was born in the audio field, but its full potential has still to be developed, and with regard to this I strongly hope to get in touch with companies or research centres interested in deepening these topics.

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