{"id":9246,"date":"2026-10-05T06:43:13","date_gmt":"2026-10-05T06:43:13","guid":{"rendered":"https:\/\/bhergonomic.com\/?p=9246"},"modified":"2026-10-05T06:43:17","modified_gmt":"2026-10-05T06:43:17","slug":"iso-23351-1-explained","status":"publish","type":"post","link":"https:\/\/bhergonomic.com\/pt\/iso-23351-1-explained\/","title":{"rendered":"Qual \u00e9 o n\u00edvel de isolamento ac\u00fastico do Elite-S? Explica\u00e7\u00e3o da ISO 23351-1 e dos 33 dB"},"content":{"rendered":"

Pode avaliar o isolamento ac\u00fastico de uma cabine telef\u00f3nica antes de a ver pessoalmente. Um relat\u00f3rio laboratorial mostra o desempenho da cabine completa, e uma norma de ensaio comum permite comparar esse desempenho entre marcas.<\/p>\n\n\n\n

O nosso Elite-S alcan\u00e7ou desempenho ISO 23351-1 Classe A com uma redu\u00e7\u00e3o do n\u00edvel de fala de 33 dB em ensaios realizados pela Intertek<\/strong>. Uma classifica\u00e7\u00e3o mais elevada de redu\u00e7\u00e3o da fala significa que menos som da fala escapa da cabine.<\/p>\n\n\n\n

O Elite-S mant\u00e9m mais som da fala no interior.<\/strong> Em compara\u00e7\u00e3o com uma cabine classificada com 30 dB (tamb\u00e9m Classe A), a sua classifica\u00e7\u00e3o de redu\u00e7\u00e3o da fala de 33 dB significa que cerca de 50% menos energia sonora da fala se propaga para o exterior<\/strong> nas mesmas condi\u00e7\u00f5es de ensaio ISO.<\/p>\n\n\n\n

Compreender esta diferen\u00e7a tamb\u00e9m torna as compara\u00e7\u00f5es de pre\u00e7os mais justas. Primeiro, determine o desempenho ac\u00fastico e, em seguida, compare o que cada pre\u00e7o inclui.<\/p>\n\n\n\n

\u00daltima atualiza\u00e7\u00e3o: 5 de outubro de 2026 | Autor: Richard | Tempo de leitura estimado: 6 minutos<\/p>\n\n\n\n

\"ISO<\/figure>\n\n\n\n

O que mede a ISO 23351-1?<\/h2>\n\n\n\n

Imagine algu\u00e9m a fazer uma chamada dentro de uma cabine com a porta fechada. Est\u00e1 no exterior. A quest\u00e3o \u00e9 at\u00e9 que ponto a estrutura reduz o som da fala que se propaga para o espa\u00e7o circundante.<\/p>\n\n\n\n

ISO 23351-1<\/a> fornece um m\u00e9todo laboratorial para medir a redu\u00e7\u00e3o do n\u00edvel de fala por conjuntos de mobili\u00e1rio e estruturas fechadas. Para uma cabine telef\u00f3nica, permite aos compradores avaliar a estrutura completa, em vez de se basearem numa classifica\u00e7\u00e3o ac\u00fastica de um \u00fanico painel de parede ou de um elemento de vidro.<\/p>\n\n\n\n

O resultado \u00e9 denominado redu\u00e7\u00e3o do n\u00edvel de voz<\/strong>. Um valor mais elevado significa uma maior redu\u00e7\u00e3o nesta medida. Como diferentes fabricantes podem utilizar o mesmo m\u00e9todo, disp\u00f5e de uma base comum para comparar os seus resultados.<\/p>\n\n\n\n

O valor de 33 dB descreve at\u00e9 que ponto a estrutura reduz a fala que se propaga para o espa\u00e7o circundante. Trata-se de uma classifica\u00e7\u00e3o de redu\u00e7\u00e3o, e n\u00e3o do n\u00edvel de ru\u00eddo que permanece no interior da cabine nem de uma medi\u00e7\u00e3o \u09aa\u09c3\u09a5\u09be\u09a6\u09be do ru\u00eddo exterior que entra nela.<\/p>\n\n\n\n

Para uma compara\u00e7\u00e3o \u00fatil, procure redu\u00e7\u00e3o do n\u00edvel de fala ISO 23351-1 para a cabine completa<\/strong>.<\/p>\n\n\n\n

Porque 33 dB representa um avan\u00e7o significativo em rela\u00e7\u00e3o a 30 dB<\/h2>\n\n\n\n

Os decib\u00e9is utilizam uma escala logar\u00edtmica. Melhorar a classifica\u00e7\u00e3o de redu\u00e7\u00e3o da fala de uma cabine de 30 para 33 dB corresponde a uma redu\u00e7\u00e3o adicional de aproximadamente 50% na pot\u00eancia sonora da fala que se propaga para o exterior, nas mesmas condi\u00e7\u00f5es de ensaio.<\/p>\n\n\n\n

O Canadian Centre for Occupational Health and Safety explains this logarithmic relationship<\/a>. To compare three booth ratings, start with a booth rated for 28 dB of speech reduction. Set the speech sound power escaping from that booth to 100 relative units:<\/p>\n\n\n\n

Booth’s ISO speech reduction rating<\/th>Relative transmitted speech sound power \u2014 lower is better<\/th><\/tr><\/thead>
Booth rated at 28 dB (reference)<\/td>100<\/td><\/tr>
Booth rated at 30 dB<\/td>About 63<\/td><\/tr>
Elite-S: 33 dB<\/strong><\/td>About 32<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

All three rows use the same reference speech source and weighted sound-power measure. The speech sound power transmitted by the 28 dB-rated booth is the common baseline of 100.<\/p>\n\n\n\n

In this comparison, about 50% less speech sound power escapes from Elite-S than from the booth rated at 30 dB, and about 68% less than from the booth rated at 28 dB<\/strong>. Less escaping speech sound power means stronger speech isolation on this measure.<\/p>\n\n\n\n

A 50% reduction in sound power does not mean a 50% reduction in perceived loudness.<\/strong> Your listening experience also depends on the surrounding background sound and your position. The 3 dB difference gives you a clear, measurable improvement in speech isolation under the same test method.<\/p>\n\n\n\n

What Elite-S’s Class A result tells you<\/h2>\n\n\n\n

O nosso Elite-S phone booth<\/a> combines Desempenho ISO 23351-1 Classe A<\/strong> com 33 dB de redu\u00e7\u00e3o do n\u00edvel de voz<\/strong>. Read those together: the class gives the performance category, while the number gives the measured reduction within it.<\/p>\n\n\n\n

Two products can share a class without having identical results. If you are choosing for acoustic performance, compare the actual speech reduction values as well as the class label.<\/p>\n\n\n\n

We can provide the Elite-S Intertek report for your comparison. Match it with the model and configuration on your quotation, and use the same approach when reviewing another supplier’s booth.<\/p>\n\n\n\n

Who is Intertek, and why does the laboratory matter?<\/h2>\n\n\n\n

Intertek is an international testing, inspection, and certification company with more than 140 years of history and a network spanning 100 countries<\/a>. Its services include acoustical testing and consulting<\/a>, giving buyers access to measured product performance from an established third party.<\/p>\n\n\n\n

Intertek tested our Elite-S under ISO 23351-1 and measured 33 dB speech level reduction.<\/strong> The standard supplies the common method; the Intertek report documents our booth’s result. You can use that result to compare Elite-S with other booths tested to the same standard before visiting a showroom.<\/p>\n\n\n\n

\"ISO<\/figure>\n\n\n\n

Compare acoustic performance before comparing prices<\/h2>\n\n\n\n

A booth rated for 28 dB of ISO speech reduction and our Elite-S rated at 33 dB offer different acoustic performance. Treating them as equivalent because both are enclosed phone booths overlooks an extra 5 dB of speech reduction.<\/p>\n\n\n\n

Under the standardized comparison above, the booth rated at 28 dB transmits approximately 3.16 times as much speech sound power as Elite-S, rated at 33 dB. If you want Elite-S’s level of speech isolation, a cheaper 28 dB-rated booth represents a lower-performance option, not an equivalent product at a better price.<\/p>\n\n\n\n

For a fair price comparison, shortlist booths with the same or similar ISO speech level reduction, then compare their configurations and delivered costs.<\/strong> Look at the numerical results, not just a shared class or the word \u201csoundproof.\u201d<\/p>\n\n\n\n

This puts the price difference in context: you can see what acoustic performance your budget buys.<\/p>\n\n\n\n

Why a higher price does not always mean better soundproofing<\/h2>\n\n\n\n

The sales route also affects what you pay. A purchase through importers, distributors, and local dealers can include margins and services at several stages. A higher retail price alone cannot tell you whether the enclosure reduces speech more effectively.<\/p>\n\n\n\n

At B&H, we sell directly from our factory to you, without an intermediary dealer. You get Elite-S’s independently tested 33 dB speech reduction without the additional dealer markup. That combination of measured acoustic performance and direct pricing is central to the value we offer.<\/p>\n\n\n\n

Our explanation of how factory-direct pricing can reduce office pod costs<\/a> covers the channel differences in more detail.<\/p>\n\n\n\n

Save on installation with modular self-assembly<\/h3>\n\n\n\n

We designed Elite-S with a modular structure to make it easier for you to assemble the booth yourself and save the cost of hiring an installer<\/strong>. Follow the assembly instructions and arrange the people and equipment needed for the job.<\/p>\n\n\n\n

We supply our booths on a DDP (Delivered Duty Paid)<\/strong> basis. Installation is separate: we do not provide installation services or installation quotations.<\/p>\n\n\n\n

If you prefer professional installation, we can help you find a third-party installation company, which provides its own quotation. When comparing a dealer’s installed package with our DDP price, add the third-party installation cost if you plan to use that service.<\/p>\n\n\n\n

Can a nearby showroom help you decide?<\/h2>\n\n\n\n

Yes. Visiting a nearby booth supplier can help you understand the space, door, ventilation, and experience of speaking inside an enclosure. To explore speech escaping from the booth, have someone speak inside with the door closed while you listen outside.<\/p>\n\n\n\n

Then ask: \u201cWhat is the ISO 23351-1 speech level reduction for this exact model?\u201d<\/strong> Get the report so you can compare its result with Elite-S’s 33 dB.<\/p>\n\n\n\n

If the comparable ISO result is below 33 dB, that booth achieved less speech reduction than Elite-S in the standardized test. A nearby visit gives you a useful feel for using a booth; the reports give you the numerical comparison across brands, even when the showrooms have different background sound levels.<\/p>\n\n\n\n

Elite-S’s Intertek report gives you a firm basis for judging its speech isolation before seeing the booth in person. From there, focus on the design you like, the space you have, and the comfort you need. Explore our one-person office phone booths<\/a> with the acoustic result and DDP price side by side, so you can choose with a clear understanding of both performance and value.<\/p>","protected":false},"excerpt":{"rendered":"

You can assess a phone booth’s sound isolation before you see it in person. A laboratory report shows how the complete booth performs, and a common test standard lets you compare that performance across brands. Our Elite-S achieved ISO 23351-1 Class A performance with 33 dB speech level reduction in testing by Intertek. A higher […]<\/p>\n","protected":false},"author":1,"featured_media":9248,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[75],"tags":[51],"class_list":["post-9246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-office-phone-booth-resources","tag-office-phone-booth"],"_links":{"self":[{"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/posts\/9246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/comments?post=9246"}],"version-history":[{"count":5,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/posts\/9246\/revisions"}],"predecessor-version":[{"id":9253,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/posts\/9246\/revisions\/9253"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/media\/9248"}],"wp:attachment":[{"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/media?parent=9246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/categories?post=9246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bhergonomic.com\/pt\/wp-json\/wp\/v2\/tags?post=9246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}