{"id":231839,"date":"2024-10-19T15:06:15","date_gmt":"2024-10-19T15:06:15","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-19-30405107-dc\/"},"modified":"2024-10-25T09:27:53","modified_gmt":"2024-10-25T09:27:53","slug":"bsi-19-30405107-dc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-19-30405107-dc\/","title":{"rendered":"BSI 19\/30405107 DC"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
8<\/td>\nFOREWORD <\/td>\n<\/tr>\n
10<\/td>\n1 Scope <\/td>\n<\/tr>\n
11<\/td>\n2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
16<\/td>\n4 General conditions
4.1 Acoustic test method
4.2 Acoustic couplers and ear simulator <\/td>\n<\/tr>\n
18<\/td>\n4.3 Test signals and frequency range
4.4 Reporting of data
4.4.1 Labeling of data
5 Test enclosure and test equipment
5.1 Test enclosure
5.1.1 Unwanted stimuli
5.1.2 Type 1 \u201cAnechoic-Chamber\u201d <\/td>\n<\/tr>\n
19<\/td>\n5.1.3 Type 2 \u201cTest-Box\u201d
5.2 Measurement configuration
5.2.1 General
5.2.2 Measurement configuration for non-directional hearing aids
5.2.2.1 General <\/td>\n<\/tr>\n
22<\/td>\n5.2.3 Measurement configuration for directional hearing aids <\/td>\n<\/tr>\n
23<\/td>\n5.3 Sound source system <\/td>\n<\/tr>\n
24<\/td>\n5.4 Measurement system for the sound pressure level and harmonic distortion produced by a hearing aid
5.5 Direct-current measuring system <\/td>\n<\/tr>\n
25<\/td>\n5.6 Magnetic field source for SPLIV measurements
5.7 Magnetic field source for hearing aids having induction pick-up coil for use with a telephone <\/td>\n<\/tr>\n
26<\/td>\n6 Test conditions
6.1 Normal operating conditions for a hearing aid
6.1.1 General
6.1.2 Battery or supply voltage <\/td>\n<\/tr>\n
27<\/td>\n6.1.3 Settings of controls
6.1.3.1 General
6.1.3.2 Full-on gain (FOG) settings
6.1.3.3 Reference Test Settings (RTS) <\/td>\n<\/tr>\n
28<\/td>\n6.1.4 Ambient conditions
6.1.5 Sound outlet system
6.1.6 Accessories
7 Basic acoustic hearing aid measurements
7.1 General
7.2 Frequency response curves
7.3 OSPL90 frequency response curve <\/td>\n<\/tr>\n
29<\/td>\n7.4 Full-on gain response curve <\/td>\n<\/tr>\n
30<\/td>\n7.5 Basic frequency response curve
7.5.1 Test procedure
7.5.2 Frequency range <\/td>\n<\/tr>\n
31<\/td>\n7.5.3 Reference test gain (RTG)
7.6 Total harmonic distortion <\/td>\n<\/tr>\n
32<\/td>\n8 Special hearing aid measurements
8.1 General
8.2 Intermodulation distortion
8.3 Equivalent input noise (EIN) <\/td>\n<\/tr>\n
33<\/td>\n8.4 Equivalent input noise in one-third-octave bands <\/td>\n<\/tr>\n
35<\/td>\n8.5 Measurements applying to AGC hearing aids
8.5.1 General
8.5.2 Steady-state input-output characteristics <\/td>\n<\/tr>\n
36<\/td>\n8.5.3 AGC characteristics (attack and release time) <\/td>\n<\/tr>\n
37<\/td>\n8.6 Effects of tone control and gain control
8.6.1 Basic frequency response: effect of tone control
8.6.2 Frequency response: effect of gain control position
8.6.3 Characteristics of the gain control
8.7 Battery related measurements
8.7.1 General
8.7.2 Battery current measurement <\/td>\n<\/tr>\n
38<\/td>\n8.7.3 Effects of variation of battery or supply voltage and internal resistance
8.7.3.1 Full-on gain
8.7.3.2 OSPL90
8.7.3.3 Total harmonic distortion
8.7.3.4 Total intermodulation distortion <\/td>\n<\/tr>\n
39<\/td>\n9 Special measurements for hearing aids having non-acoustical inputs
9.1 General
9.2 Equivalence of output levels for a non-acoustical input
9.3 Measurement setup for \u201cWireless\u201d input (WL)
9.3.1 General
9.3.2 Measurement setup <\/td>\n<\/tr>\n
40<\/td>\n9.3.3 Wireless Basic frequency response SPLWL
9.3.4 HFA-SPLWL
9.3.5 Frequency response with full-on gain control setting
9.3.6 Equivalency of wireless input sensitivity level (EWLS)
9.4 Hearing aids with electrical input
9.4.1 General <\/td>\n<\/tr>\n
41<\/td>\n9.4.2 Measurement setup
9.4.3 Basic frequency response (SPLEI)
9.4.4 HFA-SPLEI
9.4.5 Frequency response with full-on gain control setting
9.4.6 Equivalent electrical input sensitivity level (EEIS)
9.4.7 Connector system for electrical input <\/td>\n<\/tr>\n
42<\/td>\n9.5 Hearing aids having induction pick-up coil
9.5.1 General
9.5.2 Basic frequency response in a vertical magnetic field (SPLIV)
9.5.3 Frequency response with full-on gain control setting (full-on SPLIV)
9.5.4 Effect of gain control position on frequency response
9.5.5 Harmonic distortion <\/td>\n<\/tr>\n
43<\/td>\n9.5.6 HFA-SPLIV
9.5.7 Equivalent test loop sensitivity level (ETLS)
9.5.8 Full-on HFA-SPLIV
9.6 Hearing aids having induction pick-up coil for use with a telephone
9.6.1 SPLITS response curve <\/td>\n<\/tr>\n
44<\/td>\n9.6.2 HFA-SPLITS
9.6.3 Relative simulated equivalent telephone sensitivity level (RSETS) <\/td>\n<\/tr>\n
45<\/td>\n10 Measurement of the performance for production, supply and delivery quality assurance purposes
10.1 General
10.2 Nominal reference test gain
10.3 Nominal OSPL90
10.4 Nominal full-on gain
10.5 Nominal bandwidth frequencies f1 + f2
10.6 Nominal frequency response curve <\/td>\n<\/tr>\n
46<\/td>\n10.7 Nominal battery or supply voltage
10.8 Nominal battery current
10.9 Nominal total harmonic distortion <\/td>\n<\/tr>\n
47<\/td>\n10.10 Nominal equivalent input noise level
10.11 Nominal equivalent test loop sensitivity level (ETLS)
10.12 Nominal Full-on HFA SPLIV
10.13 Electrical Input impedance
10.14 Nominal equivalent electrical input sensitivity level
10.15 Nominal steady state input-output AGC characteristics
10.16 Nominal attack- and release time <\/td>\n<\/tr>\n
48<\/td>\n11 Maximum permitted expanded uncertainty of measurements <\/td>\n<\/tr>\n
49<\/td>\nAnnex A (normative) Substitution measurement method
A.1 Introduction
A.2 Measurement method
A.3 Comparison of the substitution method <\/td>\n<\/tr>\n
51<\/td>\nAnnex B (normative) Effect of MLE on non-acoustical output hearing aids
B.1 Definition of acoustic and non-acoustic input equivalence <\/td>\n<\/tr>\n
52<\/td>\nB.2 In-situ equivalence measurement in case of known MLE <\/td>\n<\/tr>\n
53<\/td>\nB.3 HFA equivalence of output levels for non-acoustical inputs <\/td>\n<\/tr>\n
54<\/td>\nB.3.1 In-situ output level equivalency of wireless input sensitivity level (EWLS)
B.3.2 In-situ output level equivalency of electrical input sensitivity level (EEIS)
B.3.3 In-situ output level equivalency of test loop sensitivity level (ETLS)
B.3.4 In-situ output level equivalency of telephone sensitivity level (RSETS) <\/td>\n<\/tr>\n
55<\/td>\nAnnex C (informative) Examples of uncertainty calculation
C.1 Sound source system for test box
C.2 Sound source system for test chamber <\/td>\n<\/tr>\n
56<\/td>\nC.3 Hearing aid measurement <\/td>\n<\/tr>\n
58<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

BS EN IEC 60118-0. Electroacoustics. Hearing aids – Part 0. Measurement of the performance characteristics of hearing aids<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n58<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":231844,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[270,2641],"product_tag":[],"class_list":{"0":"post-231839","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/231839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/231844"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=231839"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=231839"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=231839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}