ISO 17534-1:2015 音響学 — 屋外の音を計算するためのソフトウェア — Part 1: 品質要件と品質保証 | ページ 5

2.1

accuracy

agreement of results calculated with a software with those obtained by strict obedience of the method according to its official documentation

2.2

beta version

version of the software not yet ready for release but sent to a selected group of users for testing and comment

2.3

calculation method

complete set of algorithms, simulations, and other routines necessary to determine a result in accordance with the scope of the method on the basis of a complete set of input data

Note 1 to entry: A set of input data that quantifies and describes the noise sources output and position, the geometric and acoustic properties of the environment that influence sound propagation, and the positions of the receivers.

Note 2 to entry: For the purpose of ISO 17534-1, “calculation”, “prediction”, or “computation” has the same meaning.

2.4

calculation ray

polygon line representing a propagation path from a point source to a receiver taken into account to calculate the corresponding sound contribution

2.5

correct results

results calculated with reference configuration (2.12) that are in agreement with the published results or intervals

Note 1 to entry: In this sense, a result is correct if it is obtained by exactly applying the calculation method according to its official documentation.

Note 2 to entry: Other aspects of correctness are beyond the limits of the normative definitions of ISO 17534-1. This includes the error propagation with uncertain input data, uncertainties caused by simplifications in the calculation model or other influences caused by shortcomings in the physical understanding, or mathematical formulation.

2.6

declaration of conformity

Test Case Results Comparison Form (TRC-form) stating that the results calculated for the test cases obtained by means of the software are within the tolerances specified and a Grade of Implementation Form (GoI-form) stating the grade of agreement of the implementation with the official documentation

2.7

modified configuration

configuration of the software where one or more steps according to the official documentation of a consistently implementable calculation method (2.9) necessary to obtain a result in the frame of its scope are approximated, neglected, or otherwise simplified

Note 1 to entry: The reason to select such configurations is often to accelerate the calculation and to perform it in less computational capacity.

2.8

new release

version of software made available to end-users having a version or release number or date different from the previously available version

Note 1 to entry: Beta versions of new releases are not included.

2.9

official documentation of a consistently implementable calculation method

clear and unambiguous documentation sufficient to perform a calculation covered by the scope of the calculation method (2.3)

2.10

point to point calculation

P2P

calculation of the sound contribution or attenuation based on one calculation ray either in case of a direct ray from the source to the receiver or a reflected ray with direction changes

2.11

quality assurance

securing of an agreed acceptable quality of a software implemented calculation method (2.3) by following the requirements and recommendations

2.12

reference configuration

configuration of the software where all steps according to the official documentation of a consistently implementable calculation method (2.9) necessary to obtain a result in the frame of its scope are performed and none of these steps is approximated, neglected, or otherwise simplified

2.13

software

programs, procedures, rules performed by an information processing system based on a set of routines operated by computers to determine a result from a set of input data by performing a consistently implemented calculation method (2.3)

2.14

test case

unambiguous description of a scenario with one or more sources and one or more receivers by a complete set of input data with intermediate and final results and intervals of acceptable deviations calculated in the reference configuration (2.12)

Note 1 to entry: According to this definition, a test case is always related to a well-defined calculation method.

Note 2 to entry: See 4.5 about requirements for such test cases.

2.15

test scenario

complete description of a complex scenario to check the precision of a method implemented in different software products operated in a specified configuration or to evaluate the uncertainty caused by applying a modified configuration (2.7) instead of the reference configuration (2.12)

2.16

test suite

set of test cases to check the correct implementation of a calculation method (2.3) in software

2.17

uncertainty

statistical description of potential deviations of calculated results from those obtainable with best possible accuracy (2.1) due to ambiguous or unclear descriptions in the calculation method (2.3) , or in the software through, for example, the application of acceleration techniques based on model simplification or other software strategies which neglect sources or calculation steps

2.18

user documentation

information about use, features, interfaces, calculation methods (2.3) , and obtainable results

Note 1 to entry: The user documentation can also support the solving of problems. Documentation can be supported as data-files or in paper form. Examples are user manuals, reference handbooks, online help, or websites.

2.19

verification

process of running test suite (2.16) calculations and comparing computational results with published correct results (2.5)