Browser-Based Audio, Microphone & Speaker Diagnostic Tools
Evaluate microphone clarity, laptop speaker frequency response, stereo channel separation, 5.1 surround sound mapping, and room acoustics in your browser. Engineered with the Web Audio API for bit-perfect audio synthesis and low-latency analysis.
All Audio & Speaker Tests
100% Free • In-BrowserMic Test
90,500 (KD 71)Test your microphone with real-time waveform, spectrum analyzer, and 10s playback.
Sound Test (Speaker Test)
27,100 (KD 41)Test laptop speakers with reference sound frequencies, voice samples, and L/R checks.
Left Right Audio Test
2,400Verify headphone and stereo speaker channel orientation with swap detection.
Surround Sound Test
390Test 5.1 and 7.1 surround sound channels individually via ChannelMergerNode.
Tone Generator
18,100 (KD 41)Generate custom sine, square, sawtooth, and triangle audio frequencies from 1Hz to 22kHz with 20Hz-20kHz sweep.
Pitch Detector
8,100 (KD 11)Real-time microphone pitch detector using YIN autocorrelation; note, octave, and cents needle display.
Hearing Test
27,100 (KD 60)Check your audible frequency hearing range across high and low tones.
Bass Test
2,400 (KD 25)Test subwoofer and low-end audio bass response between 20 Hz and 200 Hz.
Decibel Meter
33,100 (KD 56)Measure ambient noise and sound level in dB(FS) using your microphone with calibration.
Headphone Test
5,400 (KD 24)All-in-one headphone test: L/R channels, polarity in/out of phase, bass, and range.
Online Voice Recorder
22,200 (KD 50)Record clear audio notes directly in your browser with WAV and WebM export.
Audio Delay Test
480 (KD 17)Measure audio delay and Bluetooth headphone latency with flash-and-beep sync.
Real-Time Microphone Testing & Frequency Inspection
Clear audio communication is essential for video conferencing, podcasting, gaming, and remote work. Our Microphone Test interfaces directly with your input devices via getUserMedia, providing real-time RMS volume level meters, live oscilloscopes, and fast-Fourier-transform (FFT) frequency spectrum analyzers. You can record 10 seconds of uncompressed speech to verify voice clarity, background noise floor suppression, and automatic gain control (AGC) behavior.
Speaker Health, Subwoofer Bass & Chassis Rattle Detection
Laptop speakers are compact transducers vulnerable to diaphragm tearing, coil rubbing, and acoustic resonance against thin chassis plastic. The Sound Test and Tone Generator enable you to generate pristine sine, square, sawtooth, and triangle waves across the full audible range from 1 Hz to 22 kHz. By sweeping frequencies through the 100 Hz to 500 Hz midrange, you can immediately identify loose speaker grilles, buzzing screws, or blown driver coils that ruin voice clarity.
Stereo Orientation, Surround Sound & Latency Verification
Ensure your audio hardware is configured correctly with our Left/Right Audio Test and 5.1 Surround Sound Test. Many budget headphones or external USB sound cards suffer from reversed stereo wiring. Additionally, our Audio Delay Test calculates wireless Bluetooth transmission latency, helping you adjust audio sync offsets in media players and streaming software.