Audio Volume Changer

What is an Audio Volume Adjuster?

The Audio Volume Adjuster is a lightweight tool focused on online adjustment of overall audio loudness, supporting precise volume gain or attenuation within the range of -20dB to +20dB. All operations are processed locally in the browser—no software installation or file uploads required—eliminating privacy leakage risks entirely. It modifies audio amplitude directly via algorithms, making it suitable for repairing low-volume recordings, balancing volume differences across multiple clips, or providing flexible loudness control for scenarios like video dubbing and podcasts. The tool is compatible with both mobile and desktop browsers, ideal for content creators and podcast editors needing quick audio adjustments on the go.

Core Features

1. Full-Range Precision Adjustment

   • Offers a broad adjustment range of -20dB to +20dB:
     • Positive values (e.g., +12dB): Significantly enhance clarity for low-volume materials like faint vocals or ambient sounds.
     • Negative values (e.g., -8dB): Prevent music accompaniment from overpowering vocals and resolve audio clipping caused by overload.
   • Supports 0.1dB micro-adjustments for professional audio processing needs.

2. Privacy-First Local Processing

   • Utilizes the Web Audio API for all computations within the browser. Audio files never leave your device, and data is cleared automatically upon closing the page, fully avoiding cloud-based leakage risks.

3. Real-Time Waveform Comparison & Preview

   • Displays audio waveforms intuitively, enabling parameter adjustments with visual feedback.
   • Supports segment playback for quick validation of adjustment effects.

How to Use the Audio Volume Adjuster?

1. Upload an Audio File

   • Click “Select File” or drag and drop local files (MP3/WAV/AAC, etc.) into the workspace.

2. Set Volume Gain Value

   • Drag the slider or enter an exact value (-20dB~+20dB) based on your needs:
     • Repair scenarios (low recording volume): Set to +5dB~+15dB to improve audibility.
     • Balancing scenarios (overly loud background music): Set to -3dB~-10dB to highlight the main track.
     • Fine-tuning: Use ±0.1dB step buttons for micro-adjustments.

3. Preview and Download

   • Click specific points on the waveform to preview segments and compare original vs. processed effects.
   • Confirm the result, select an output format (MP3/WAV, etc.), and click “Download” to save locally.