Término solicitado: CONTROL ACUSTICOS/(265,65,175)
2 Registro/s encontrado/s en CAT+NORMA
| Tipo de documento: | NORMA |
| Título: | ELECTROACOUSTICS - METHODS TO DETERMINE CORRECTIONS TO OBTAIN THE FREE-FIELD RESPONSE OF A SOUND LEVEL METER |
| Código de Doc.: | IEC 62585 |
| Autor Inst.: | International Electrotechnical Commission. IEC |
| Fecha: | 2012 |
| Estado: | Para datos sobre la vigencia de esta norma haga clic aquí |
| Objeto: | IEC 62585:2012 provides information on the corrections required over a range of frequencies in order for a periodic test of a sound level meter to be performed according to IEC 61672-3. These corrections include; corrections for the typical effects of reflections from the case of the sound level meter and diffraction of sound around the microphone; corrections for the deviation of the typical microphone frequency response from a uniform frequency response, where the actual microphone response cannot be measured; and corrections for the influence on the frequency response of a typical microphone of a specified windscreen and any other accessory that is part of the configuration for normal use of the particular sound level meter submitted for testing. This International Standard includes discussion about uncertainties of measurement of the required corrections. In some instances a maximum permitted expanded uncertainty for the manufacturer or testing laboratory is given. The aim of this International Standard is to ensure that the adjustment value at the calibration check frequency and all corrections are determined using consistent and appropriate methods. It is intended that this International Standard will be used by manufacturers to determine adjustment values and corrections, by laboratories performing pattern evaluation tests according to IEC 61672-2, and by laboratories performing periodic tests according to IEC 61672-3. Laboratories performing periodic tests according to IEC 61672-3 will also need to consult this International Standard to ensure that the expanded uncertainties of measurement for the corrections quoted by the manufacturer do not exceed the maximum permitted values |
| Relac. con otras Normas: | EN 60942, EN 61094-1, EN 61094-5, EN 61094-6, EN 61183, EN 61672-1, EN 61672-2, EN 61672-3, IEC 60942, IEC 61094-1, IEC 61094-5, IEC 61094-6, IEC/TS 61094-7, IEC 61183, IEC 61672-1, IEC 61672-2, IEC 61672-3, ISO/IEC Guide 98-3, ISO/IEC Guide 99, IEC 61094-8, IEC 61260, IEC 61094-2, IEC 61094-3 |
| ICS: | 17.140.50 - Electroacoustics Including sound level meters |
| Idioma: | en |
| Título en otro Idioma: | Électroacoustique. Méthode de détermination de corrections pour obtenir la réponse en champ libre d'un sonomètre |
| Edición: | 1.0 |
| Palabras Clave: | Electroacústica; Dispositivos; Filtros acústicos; Equipos electrónicos; Control acústicos |
| Páginas: | 87p. |
| Ingreso de la Info.: | 2015-05-26 |
| Para ver la norma completa busque en la base Normas (solo para personal del INTI) |
| Tipo de documento: | NORMA |
| Título: | ELECTROACOUSTICS - OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS - PART 1: SPECIFICATIONS |
| Código de Doc.: | IEC 61260-1 |
| Autor Inst.: | International Electrotechnical Commission. IEC |
| Fecha: | 2014 |
| Estado: | Para datos sobre la vigencia de esta norma haga clic aquí |
| Objeto: | IEC 61260-1:2014 specifies performance requirements for analogue, sampled-data, and digital implementations of band-pass filters. The extent of the pass-band region of a filter's relative attenuation characteristic is a constant percentage of the exact mid-band frequency for all filters of a given bandwidth. An instrument conforming to the requirements of this standard may contain any number of contiguous band-pass filters covering any desired frequency range. Performance requirements are provided for two filter classes: class 1 and class 2. In general, specifications for class 1 and class 2 filters have the same design goals and differ mainly in the acceptance limits and the range of operational temperature. Acceptance limits for class 2 are greater than, or equal to, those for class 1. Maximum-permitted expanded uncertainties of measurement are also specified. Band-pass filters conforming to the performance requirements of this standard may be part of various measurement systems or may be an integral component of a specific instrument such as a spectrum analyser. This standard specifies the ranges of environmental conditions for operation of the filters. The required range depends on whether the instrument containing the filters is designed to be operated in a controlled environment or more generally in the field. Band-pass filters conforming to the requirements of this standard are capable of providing frequency-band-filtered spectral information for a wide variety of signals, for example, time-varying, intermittent or steady; broadband or discrete frequency; and long or short durations. This first edition of IEC 61260-1, future IEC 61260-2 and future IEC 61260-3, cancel and replace the first edition of IEC 61260 (1995) and its amendment 1 (2001). This edition constitutes a technical revision which includes the following significant technical changes with respect to the IEC 61260 (1995) and its amendment 1 (2001):- the single document in the first edition of IEC 61260 (1995) and its amendment 1 (2001) is in IEC 61260 series separated into the three parts covering: specifications, pattern evaluation tests and periodic tests;the performance category class 0 is removed;the design goals for the specification can be based only base-10;the reference environmental conditions have been changed from 20 °C / 65 % RH to 23 °C / 50 % RH; and IEC 61260 (1995) specified tolerance limits without considering the uncertainty of measurement for verification of the specifications. IEC 61260 series specifies acceptance limits for the observed values and maximum-permitted uncertainty of measurements for laboratories testing conformance to specifications in the standard |
| Relac. con otras Normas: | IEC 61000-4-2, IEC 61000-4-3:2006, IEC 61000-6-1:2005, IEC 61000-6-2:2005, IEC 61000-6-3:2006, IEC 61672-1, ISO/IEC Guide 98-3, ISO/IEC Guide 98-4:2012, CISPR 22:2008, EN 61000-4-2, EN 61000-4-3:2006, EN 61000-6-1:2007, EN 61000-6-2:2005, EN 61000-6-3:2007, EN 61672-1, EN 55022:2010, EN 55022:2010/AC:2011, CISPR 16-1-1:2010, EN 55016-1-1:2010 |
| ICS: | 17.140.50 - Electroacoustics Including sound level meters |
| Idioma: | en |
| Título en otro Idioma: | Electroacoustique. Partie 1: Filtres de bande d'octave et de bande d'une fraction d'octave. Spécifications |
| Edición: | 1.0 |
| Palabras Clave: | Electroacústica; Dispositivos; Filtros acústicos; Equipos electrónicos; Control acústicos |
| Páginas: | 87p. |
| Ingreso de la Info.: | 2015-05-26 |
| Para ver la norma completa busque en la base Normas (solo para personal del INTI) |
Fin
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