Initializing, please wait a moment
Speaker & Audio Channel Test Passo a Passo
Siga estes passos na pagina Speaker & Audio Channel Test. O tom so comeca depois de clicar Play (regras de autoplay do browser).
Passo 1 - abrir a ferramenta
Va a Speaker & Audio Channel Test. Nao precisa instalar nem iniciar sessao.
Passo 2 - escolher a frequencia
Mova o controlo Hz se quiser outro tom (padrao 440 Hz). O rotulo mostra o valor atual.
Passo 3 - tocar um canal
Clique Play Left, Play Right ou Play Both. Um tom curto toca cerca de 2,5 segundos. A linha de estado atualiza para ver o teste a correr.
Passo 4 - parar ou repetir
Clique Stop para terminar cedo, ou toque outro canal. Tudo no browser - sem microfone, sem upload e sem conta.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.