Microphone Tester
Test your microphone with real-time audio visualization, spectrum analyzer, and volume meter
About Microphone Tester
Overview
The Microphone Tester is a comprehensive browser-based tool that helps you test and diagnose your microphone in real-time. It provides multiple visualizations including waveform display, frequency spectrum analysis, and a volume meter with peak detection. This tool is perfect for checking if your microphone is working properly, adjusting input levels, or comparing different microphones.
Features
- Real-time waveform visualization showing audio signal over time
- Frequency spectrum analyzer with color-coded frequency bars
- Volume meter with current level, peak detection, and decibel display
- Record and playback audio to test microphone quality
- Download recordings in WebM format for further analysis
- Support for multiple microphone devices with easy switching
- Live audio information display (sample rate, latency, channels)
- Visual feedback with color-coded volume levels
- Completely browser-based - no software installation required
- Privacy-focused - audio never leaves your device
How to Use
- Click "START MICROPHONE TEST" to begin
- Grant microphone permission when prompted by your browser
- Speak or make sounds to see real-time visualizations
- Monitor the volume meter to check your audio levels
- Use the device selector to test different microphones
- Click "STOP TEST" when finished
FAQ
Why is the browser asking for microphone permission?
Web browsers require explicit user permission before any website can access your microphone. This is a security feature that protects your privacy. Click "Allow" to grant permission. The tool only works while the page is open and never records or uploads your audio.
What do the different colors in the volume meter mean?
The volume meter uses a color-coded system: green indicates optimal levels (normal speech), yellow shows loud audio that is still acceptable, orange indicates very loud levels that may cause distortion, and red means clipping or distortion is occurring. Aim to keep your levels in the green zone for best quality.
How can I test a different microphone?
If you have multiple microphones connected, use the device selector dropdown at the top of the tool. Click on it to see all available audio input devices, then select the one you want to test. The tool will immediately switch to the new device and continue testing.
What is the frequency spectrum analyzer showing?
The spectrum analyzer displays the different frequencies present in your audio in real-time. Lower frequencies (bass) are on the left, and higher frequencies (treble) are on the right. When you speak, you will see activity primarily in the mid-range frequencies. This helps identify audio quality issues or frequency response problems.
Is my audio being recorded or sent anywhere?
No, absolutely not. All audio processing happens entirely within your browser using the Web Audio API. Your audio is analyzed in real-time and immediately discarded - it is never recorded, saved, or transmitted to any server. Your privacy is completely protected.
Why are my audio levels too low or too high?
If levels are too low, try moving closer to the microphone or increasing your system microphone volume in your operating system settings. If levels are too high and showing red, move further away from the microphone or reduce the system input volume. The green zone represents optimal levels for clear audio.