INSTRUMENT DE DIAGNOSTIC HTML5 MEDIADEVICES

Diagnóstico Acústico e Teste de Som - Display Test Online

Testez la résolution de votre webcam, le nombre de FPS, le volume vocal et la distorsion avant vos réunions en ligne.

WEB AUDIO SYNTHESIZER & SPECTRUM SCOPE

Pronto

FREQ: 440 Hz|VOL: 80%

W3C WEB AUDIO API 48kHz

FREQUENCY SELECTOR440 Hz

OUTPUT GAIN / VOLUME80%

PROTOCOLO DE DIAGNÓSTICO

Como Executar Este Teste de Tela (01, 02, 03)

Preparação

Limpe a superfície do monitor, desative sensores de luz ambiente e defina a resolução e taxa de atualização nativas.

Execução

Entre no modo de tela cheia (F11) e use os controles para navegar pelos padrões de teste.

Avaliação

Observe anomalias de diferentes ângulos de visão em um ambiente escuro. Consulte nossos guias para interpretar os resultados.

ARQUITETURA DE HARDWARE

Comparativo de Tecnologias de Painel

IPS Profissional (In-Plane Switching)

Precisão de cores e ângulos de visão superiores. Usado em monitores de referência. Sujeito a leve brilho IPS no escuro.

IPS Gamer (Fast IPS / Nano IPS)

Altas taxas de atualização e tempos de resposta rápidos para jogos, porém contraste estático menor que o VA.

Painel VA (Alinhamento Vertical)

Excelentes pretos profundos e alto contraste (3000:1+). Comum em telas curvas. Pode apresentar black smearing em movimento rápido.

OLED (LED Orgânico) e QD-OLED

Pixels autoiluminados proporcionam preto puro, tempos de resposta quase instantâneos e contraste infinito. Sujeito a ABL.

CONFIDENTIALITÉ & TÉLÉMÉTRIE MATÉRIELLE

Inspection Locale des Périphériques HTML5

Vérifier la qualité vidéo et audio de vos appareils est indispensable pour les appels et le streaming. Notre outil s'appuie sur les API W3C MediaDevices pour analyser résolutions, FPS et niveaux sonores en toute sécurité dans la mémoire du navigateur.

Technical FAQs & Helpful Content

FAQ Webcam et Microphone

Tudo o que você precisa saber sobre este instrumento de diagnóstico, procedimentos de calibração e normas técnicas.

01.How does the online Webcam & Microphone Hardware Test work?

Our diagnostic tool requests temporary access via HTML5 navigator.mediaDevices.getUserMedia(). It displays your live video feed and visualizes microphone audio input levels in real time.

02.Is my webcam video or microphone audio recorded or sent to a server?

No. Zero video frames or audio streams leave your device. All media processing happens 100% client-side inside your web browser.

03.Why is my browser blocking access to my camera or microphone?

Check your browser address bar permissions (click the lock/padlock icon) and ensure Camera and Microphone permissions are set to 'Allow'. Also ensure no other app (Zoom, Teams, Skype) is locking the camera device.

04.How do I test webcam video resolution and frame rate (FPS)?

Our video inspector reads live media track settings to report native resolution (1080p, 4K), active aspect ratio, and video frame rate.

05.What causes microphone echo or feedback during video calls?

Echo occurs when speaker sound leaks back into an unshielded microphone. Enabling Acoustic Echo Cancellation (AEC) or using headphones eliminates echo feedback loops.

06.How do I test my microphone gain and background noise level?

Speak into your microphone while observing the decibel meter. Green levels (-18dB to -6dB) indicate healthy speech volume; red levels (0dB) indicate clipping distortion.

07.Can I test external USB webcams and Bluetooth headsets?

Yes. Use the media device drop-down selector to switch between built-in laptop cameras, external USB webcams, and Bluetooth headset microphones.

08.Why is my webcam video dark or grainy in low light?

Webcam sensors increase digital gain (ISO) in low ambient light, introducing digital noise grain. Increase front lighting or position yourself facing a window.

09.What is the difference between mono and stereo microphone input?

Mono microphones capture a single audio channel; dual-capsule stereo microphones capture distinct left and right channels for immersive spatial voice recording.

10.Does this test work on mobile devices (iPhone, iPad, Android)?

Yes. Our tool is fully responsive and compatible with mobile Safari and Chrome, allowing you to test front and rear camera feeds and internal microphones.

Não tem certeza de qual teste executar a seguir? Precisa de ajuda com problemas?

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