聽力設(shè)備檢測(cè)

聽力設(shè)備檢測(cè)項(xiàng)目報(bào)價(jià)？??解決方案？??檢測(cè)周期？??樣品要求？

點(diǎn) 擊 解 答??

GB/T 7341.1-2010電聲學(xué) 測(cè)聽設(shè)備 第 1 部分：純音聽力計(jì)

本標(biāo)準(zhǔn)規(guī)定了聽力計(jì)的通用要求，以及采用心理聲學(xué)的測(cè)試方法，通過與標(biāo)準(zhǔn)參考聽閾級(jí)的比較來設(shè)計(jì)的，用測(cè)定聽閾級(jí)的純音聽力計(jì)的具體要求。本部分的目的旨在保證：用符合本部分要求的不同聽力計(jì)，按照GB/T 16403及GB/T 7583所描述的方法，對(duì)指定人耳在125Hz～8kHz的頻率范圍內(nèi)作聽力測(cè)試，尤其是聽閾測(cè)試，應(yīng)能得到基本相同的結(jié)果；所得結(jié)果表示受試耳的聽力與基準(zhǔn)聽閾之間的有效比較；聽力計(jì)按其產(chǎn)生的測(cè)試信號(hào)范圍，操作方式或測(cè)試的聽覺功能范圍的復(fù)雜性進(jìn)行分類。

IEC 60455-3-4-2003電氣絕緣用樹脂基復(fù)合物.第3部分:單項(xiàng)材料規(guī)范.活頁4:加填料的聚氨酯復(fù)合物

Gives the requirements for filled polyurethane resinous compounds in the cured form for classes PUR-F-4 to PUR-F-8.

IEC 63087-1-2021主動(dòng)輔助生活用輔助聽力設(shè)備和系統(tǒng).第1部分：總則

This part of IEC 63087 specifies requirements, and the associated methods of measurement, for the electroacoustic performance of personal listening systems. This document specifies requirements for the provision of assistive listening in audio, video and multimedia systems and equipment. The requirements are of different kinds, because of the diversity of the hardware concerned. Existing IEC standards for methods of measurement are normatively referenced if they exist. Methods of measurement and performance requirements are specified in IEC 63087-21. This document does not apply to hearing aids. Also excluded are devices entirely worn on or in the ear, which cannot be measured independently.

ISO 389-1-2017聲學(xué) 校正聽力設(shè)備的基準(zhǔn)零級(jí) 第1部分:純音和壓耳式耳機(jī)用的基準(zhǔn)等效閾聲壓級(jí)

This document specifies a standard reference zero for the scale of hearing threshold level applicable to pure-tone air conduction audiometers, to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world. It states the information in a form suitable for direct application to the calibration of audiometers, that is, in terms of the reference equivalent threshold sound pressure levels of generic supra-aural earphones specified in 4.2, measured on an ear simulator complying with IEC 60318-1 and in terms of modelspecific data given in two additional tables for the IEC 60318-3 acoustic coupler and the IEC 60318-1 ear simulator, respectively. The data are based on an assessment of the information available from the various standardizing laboratories responsible for audiometric standards and from scientific publications. Some notes on the application and derivation of the reference levels are given in Annexes A and B.

ISO 389-2-1994聲學(xué) 校正聽力設(shè)備的基準(zhǔn)零級(jí) 第2部分:純音和插入式耳機(jī)用的基準(zhǔn)等效閾聲壓級(jí)

Specifies levels supplementary to those specified in ISO 389:1991 (to be re-issued as ISO 389-1). Values given are applicable to insert earphones of type Etymotic Research ER-3A, coupled to the human ear by ear inserts of type ER-3-14.

ISO 389-3-2016聲學(xué). 聽力測(cè)定設(shè)備校準(zhǔn)用標(biāo)準(zhǔn)零級(jí). 第3部分: 純音和骨振動(dòng)器的標(biāo)準(zhǔn)等效閾值振動(dòng)力水平

This part of ISO 389 specifies the following data applicable tonthe calibration of bone vibrators for puretone bone-conductionnaudiometry:na) reference equivalent threshold vibratory force levelsn(RETVFL), corresponding to the threshold of hearing of youngnotologically normal persons by bone-conduction audiometry;nb) essential characteristics of the bone vibrator and the methodnof coupling to the test subject, and to the mechanical coupler;nc) essential characteristics of the masking noise and thenbaseline masking noise level applied to the ear not under test.nGuidance on the practical application of this part of ISO 389 innthe calibration of audiometers is given in Annex B.nRETVFL is the vibratory force level transmitted to a mechanicalncoupler of specified characteristics by a vibrator when applied tonthe mechanical coupler under stated conditions of test and whennenergized at the voltage level corresponding to the normalnthreshold of hearing for location on the mastoid prominence.nN

ISO 389-4-1994聲學(xué) 校正聽力設(shè)備的基準(zhǔn)零級(jí) 第4部分:窄帶掩蔽噪聲基準(zhǔn)級(jí)

Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

ISO 389-5-2006聲學(xué).測(cè)聽設(shè)備的校準(zhǔn)用參考零點(diǎn).第5部分:頻率范圍:8kHz～16kHz的純音用參考等效值閾聲壓級(jí)

This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPLs) of pure tonesin the frequency range from 8 kHz to 16 kHz applicable to the calibration of air conduction audiometers forspecific earphones.NOTE Some notes and references on the derivation and the test conditions used to determine the reference levelsare given in Annex A and the Bibliography.

ISO 389-6-2007聲學(xué).聽力測(cè)量設(shè)備校準(zhǔn)用參考零點(diǎn).第6部分:短時(shí)持續(xù)聽覺試驗(yàn)信號(hào)參考擴(kuò)音閥

This part of ISO 389 specifies reference hearing threshold levels for tests signals of short duration applicable to the calibration of audiometric equipment where such signals are used.

ISO 389-8-2004聲學(xué).校正聽力設(shè)備的基準(zhǔn)零級(jí).第8部分:耳罩式耳機(jī)純音基準(zhǔn)等效閾聲壓級(jí)

本部分規(guī)定了125 Hz～8 000 H2頻率范圍的純音基準(zhǔn)等效閾聲壓級(jí)(RETSPLs)，適用于配備了 一種特殊型號(hào)的耳罩式耳機(jī)(SENNHEISER HDA 200)的氣導(dǎo)測(cè)聽設(shè)備的校準(zhǔn)。 注：在附錄A和參考文獻(xiàn)中給出了得出HDA 200型耳罩式耳機(jī)基準(zhǔn)等效閾聲壓級(jí)的說明和測(cè)試條件。 附錄B給出了這種耳罩式耳機(jī)的聲衰減。附錄C給出了A—E類和B—E類語言聽力計(jì)(見 GB／T 7341．2)耳機(jī)的自由場(chǎng)等效輸出修正值。

ISO 389-9-2009聲學(xué).校準(zhǔn)測(cè)聽設(shè)備的基準(zhǔn)零級(jí).第9部分:基準(zhǔn)聽力閾級(jí)測(cè)定的首選試驗(yàn)條件

This part of ISO 389 specifies test conditions for determiningnthe hearing thresholds of subjects for the purpose of establishingnstandardized values for reference hearing threshold levels.

ITU-R BR.785-1 SPANISH-2001在多媒體發(fā)布環(huán)境中發(fā)布節(jié)目

The ITU Radiocommunication Assembly, considering that television programmes can be produced for release on a variety of media;that end-user television installations can desirably be conceived to use programmes delivered through a variety of media; that the same concept applies to audio programmes and audio end-user installations; that there is a need to ensure harmonization of standards between programme generation and programme presentation; that the terms of the ITU-R cooperation with the IEC and the IS0 are described in Opinion 16 and Resolution ITU-R 41.

ITU-R REPORT M.2014-1-2006用于調(diào)度業(yè)務(wù)的地面數(shù)字移動(dòng)系統(tǒng)

Demand in the land mobile service is on the increase due to annual growth as well as to new data-based service requirements. This has led to the development of more spectrally efficient technologies utilizing digital modulation and in many cases trunking. These technologies are being introduced in systems worldwide to accommodate this demand.

EN ISO 389-2-1996聲學(xué).校正聽力設(shè)備的基準(zhǔn)零級(jí).第2部分:純音和插入式耳機(jī)用的基準(zhǔn)等效閾聲壓級(jí) ISO 389-2-1994

This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPL) forThe calibration of pure-tone audiometers supplementary to those specified in ISO 389:1991, Values given inThis part of ISO 389 are applicable to insert earphones of a pattern specified in clause 4

EN ISO 389-3-2016聲學(xué).聽力設(shè)備校正用基準(zhǔn)零級(jí).第3部分:骨振器純聲基準(zhǔn)等效閾力級(jí)(ISO 389-3:2016)

Dieser Teil von ISO 389 legt die folgenden, für die Kalibrierung von Knochenleitungsh?rern in der Reinton-Knochenleitungs-Audiometrie anwendbaren Daten fest: a) ?quivalente Bezugs-Schwellenkraftpegel (RETVFL), die den durch Knochenleitungs-Audiometrie bestimmten H?rschwellenpegeln von jungen, otologisch normalen Personen entsprechen; b) Wesentliche Eigenschaften des Knochenleitungsh?rers sowie die Methode zur Ankopplung an den Probanden und an den mechanischen Kuppler; c) Wesentliche Eigenschaften und der Grundpegel des Verdeckungsger?uschs, mit dem das nicht geprüfte Ohr beschallt wird. Anleitung zur praktische Anwendung dieses Teils von ISO 389 bei der Kalibrierung von Audiometer ist im Anhang B enthalten. Der Bezugs-Schwellenpegel der periodischen Kraft ist der vibratorische Wert der Kraft auf einen mechanischen Kuppler mit festgelegten Eigenschaften, die über einen Vibrator, wenn ein mechanischen Kuppler mit festgelegten Prüfbedingungen verwendet wird, auf diesen wirkt und dieser mit einer Spannung, die den üblichen H?rschwellen für die Stelle entspricht, betrieben, am vorstehenden Teil des Mastoids angewendet wird. ANMERKUNG 1 Werte für die Unterschiede zwischen den ?quivalenten Bezugs-Schwellenkraftpegeln bei Stirnankopplung und bei Mastoidankopplung sind zur Information in Anhang C angegeben. ANMERKUNG 2 Empfohlene Verfahren zur Durchführung der Knochenleitungs-Audiometrie sind in ISO 8253-1 beschrieben.

EN ISO 389-4-1998聲學(xué).校正聽力設(shè)備的基準(zhǔn)零級(jí).第4部分:窄帶掩蔽噪聲基準(zhǔn)級(jí)［代替:CEN EN 28798］

This part of ISO 389 specifies reference levels fornarrow-band masking noise presented by air con-duction from an earphone in pure-tone audiometry.The data are given in terms of levels to be added tothe reference equivalent threshold sound pressurelevels forThe corresponding pure-tone frequencies asspecified in ISO 389:1991 or ISO 389-2, respectively,whenThe masking earphone is placed onThe appro-priate acoustic coupler, ear simulator or artificial ear.Data are given for noise bandwidths of one-third andone-half octaves.NOTE 1 Some notes onThe derivation of the referencelevels are given in annex A.

EN ISO 389-6-2007聲學(xué).校正聽力設(shè)備的基準(zhǔn)零級(jí).第6部分:短時(shí)持續(xù)聽覺試驗(yàn)信號(hào)參考擴(kuò)音閥

This part of ISO 389 specifies reference hearing threshold levels for tests signals of short duration applicable to the calibration of audiomentric equipment where such signals are used.