About

Standard volume tools often destroy audio quality by blindly multiplying the signal, resulting in digital clipping and harsh distortion. This tool utilizes a high-fidelity Dynamics Compressor chain - similar to mastering software used in studio production - to increase perceived loudness while protecting signal peaks.

By reducing the dynamic range (the difference between the loudest and quietest parts), we can safely raise the makeup gain. This allows v_signal to be amplified up to 400% (+12 dB) without crossing the 0 dBFS ceiling, making it ideal for fixing low-level recordings, quiet Zoom meetings, or uneven podcasts.

Formulas

The relationship between Voltage Gain and Decibels is logarithmic:

L_dB = 20 ⋅ log₁₀V_outV_in

The Dynamics Compressor applies a variable gain reduction G_R based on the input level L_in relative to the Threshold T:

{

G_R = 0 if L_in ≤ TG_R = L_in - TR if L_in > T

Reference Data

Setting	Value	Description
Ceiling	-0.5 dB	Maximum peak allowed to prevent clipping.
Ratio	12:1	Compression strength applied to peaks above threshold.
Attack	0.003 s	How quickly compression engages (fast to catch transients).
Release	0.25 s	Time to return to normal gain after a peak.
Knee	30 dB	Smoothness of the transition into compression.
Sampling	44.1 kHz	Standard high-fidelity audio sampling rate.

Frequently Asked Questions

We export to WAV (Waveform Audio File Format) because it is lossless and uncompressed. Re-encoding a boosted file to MP3 would degrade quality twice (generation loss) and introduce artifacts. WAV ensures your amplified audio remains pristine and compatible with all editors.

Unlike simple amplifiers, this tool uses a "Smart Limiter" (Dynamics Compressor). It automatically lowers the volume of sudden loud spikes (like a cough or clap) while boosting the quiet parts. This allows for a much louder overall volume with minimal risk of distortion.

No. All processing happens 100% locally within your browser using the Web Audio API. Your private meetings, voice notes, or music files never leave your device.

Since processing is local, the limit depends on your device's RAM. Most modern computers can easily handle files up to 200-500MB (hours of audio). Mobile devices may have stricter limits.