Sharing.io.vn Lab / About

About Sharing.io.vn Hardware Lab

Sharing.io.vn is an independent engineering diagnostic laboratory dedicated to client-side audio, video, input, and display hardware verification.

Engineering Philosophy: Pure Functional Client Diagnostics

Sharing.io.vn was created with a clear foundational principle: diagnosing whether your microphone, camera, monitor, keyboard, or mouse works properly should never require installing proprietary native binaries or granting remote cloud servers permission to inspect your hardware streams.

Every single diagnostic algorithm across our 48 tools executes 100% client-side inside the sandbox of your modern web browser. No audio recordings, video buffers, keystrokes, or hardware telemetry data are ever transmitted to any remote backend server.

Diagnostic Methodologies & Open Web Standards

Our test suites are engineered directly against open W3C and IEEE specifications, guaranteeing consistent and repeatable calibration across Windows 11/10, macOS, Linux, ChromeOS, iOS, and Android:

1. Audio & Acoustics Engine (W3C Web Audio API Level 2)

Microphone input calibration and speaker diagnostics utilize AudioContext and AnalyserNode operating at hardware-native sampling rates (44.1 kHz to 96 kHz). We perform real-time Fast Fourier Transform (FFT) analysis with a 2048-sample window, calculating Root Mean Square (RMS) decibel relative to full scale (dBFS) levels, noise floors, and acoustic clipping alerts according to ITU-R BS.1770 audio measurement standards.

2. Video & Camera Pipeline (W3C Media Capture & Streams)

Camera tests interface directly with the device's driver via navigator.mediaDevices.getUserMedia(). By querying exact MediaTrackCapabilities and hardware constraints, our tools identify optical sensor capabilities (4K UHD, 1080p Full HD, 720p HD), compute exact delivered frame rates via requestVideoFrameCallback(), and inspect camera pixel data directly in memory via HTML5 Canvas.

3. Display Timing & V-Sync Synchronization

Monitor refresh rate, ghosting, and frame pacing diagnostics leverage the High-Resolution Time API (window.performance.now()) with sub-millisecond precision. By measuring timestamp intervals between consecutive requestAnimationFrame() callbacks against the GPU hardware swap chain, we measure exact refresh frequencies up to 540 Hz without synthetic overhead.

4. Peripherals & Input Devices (Pointer Events & WebHID)

Mouse polling rates, switch debounce times, and keyboard matrix tests utilize high-speed Pointer Events Level 3 and KeyboardEvent timestamps. This allows our suite to detect mechanical microswitch bounce (double-click defects) down to 2ms and test multi-key matrix blocking (ghosting) across N-Key Rollover (NKRO) gaming boards.

Core Diagnostic Suites

Camera & Video

Webcam Online Test, FPS Checker, Resolution Matrix, Smart Mirror, and Webcam Recorder.

Audio & Acoustics

Microphone Test & dB, Headphone Stereo Check, Hearing Range Test, and 3D Spatial Sound.

Display & Input

144Hz Monitor Hz Test, Dead Pixel Test, Keyboard & NKRO, and Mouse & Polling Rate.

Strict Data Privacy Guarantee

Camera frames, microphone audio samples, keystrokes, and connected USB identifiers stay inside your computer's local RAM. We do not operate video ingestion servers, audio storage buckets, or tracking databases. Read our complete Privacy Policy or check our Hardware Troubleshooting Guide if you encounter hardware connection issues.