Audio Pitch Detector

About Audio Pitch Detector

How to use Audio Pitch Detector

1. Select your input mode using the 'File' or 'Mic' tab at the top of the page. In file mode, drag and drop an audio file or click the file selection button to upload.
2. In microphone mode, click the 'Start Mic' button and grant microphone access permission when the browser dialog appears.
3. When audio is detected, the note name (C, D, E...) appears prominently in the center, with frequency (Hz) and cent deviation displayed below. The color of the cent meter (green, yellow, red) lets you check tuning accuracy at a glance.
4. In file mode, use the play button to play the audio and analyze pitch in real time. After analysis, use the reset button to load a different file.

Benefits of Audio Pitch Detector

• [Dual Mode: File & Microphone] Supports both drag-and-drop audio file analysis and real-time microphone input. Whether analyzing recorded audio or checking tuning during live performance, this versatile pitch detector has you covered.
• [Intuitive Cent Deviation Meter] A color-coded meter ranging from -50 to +50 cents (green for perfect, yellow for good, red for needs adjustment) provides visual feedback. Check tuning status at a glance even while performing, supporting precise pitch matching.
• [Harmonic Detection & Acoustic Analysis] Advanced algorithms automatically detect not just the fundamental frequency but also 2nd, 3rd, and 4th harmonics. Understand the detailed frequency characteristics of complex instrument sounds and voices for more precise acoustic analysis.
• [High-Accuracy Autocorrelation Algorithm] Utilizing the Web Audio API's AnalyserNode combined with an autocorrelation-based pitch detection algorithm, it achieves stable, high-accuracy pitch detection in the 60Hz-1500Hz range, supporting a wide range of sound sources including guitar, piano, and vocals.
• [Complete Browser Processing & Privacy Protection] All audio processing is done entirely within the browser, so no audio data is ever sent to a server. Enjoy pitch detection instantly without installation while maintaining complete privacy.