The work is executed in the page through browser workers, WebAssembly, Web Audio, or WebGPU as stated.
BASS / AVAILABLE NOW
Bass Booster
Add controlled low-end weight. Boost 60–250 Hz with a low-shelf filter and automatic peak protection.
BASS / local workbenchPeak-safe low-shelf render
Original and processed previews appear here.
GUIDE / bass booster online
What does bass booster do?
A bass booster raises a broad low-frequency shelf instead of increasing every sample equally. SoundTools lets you place that shelf from 60 to 250 Hz and add up to 15 dB, then scans the rendered channels and reduces overall gain when necessary to keep peaks inside the valid digital range.
RELATED USES
- boost bass in audio
- MP3 bass boost
- low frequency booster
- increase bass online
FIELD NOTES / 01
A real local processor, not a decorative upload box
Low-shelf biquad DSP runs after you choose a source and explicitly start the operation. The audio samples remain in browser memory; SoundTools does not send the selected media to an application endpoint.
Move the shelf frequency lower for sub and kick weight or higher for broader warmth, then add gain gradually while comparing the result at a matched playback volume. Results remain available for preview and download only in the current tab. Closing or refreshing the page releases those temporary objects.
PROCESS / THREE STEPS
How to use bass booster
- 01
Choose the local source
Open a compatible file in the dedicated workbench at the top of this page. The browser validates and decodes it without an upload step.
- 02
Set the useful controls
Move the shelf frequency lower for sub and kick weight or higher for broader warmth, then add gain gradually while comparing the result at a matched playback volume.
- 03
Process, check, and export
Run the local processor, inspect the status and preview, then save Peak-protected WAV · MP3 when the result is ready.
SIGNAL NOTES / VERIFIED BEHAVIOR
What this tool actually does
Clear limits are part of a useful tool. These values describe the processor currently running in this page.
Runtime and model assets may be downloaded, but the selected file is not attached to those requests.
The dedicated workbench exposes only formats it can actually produce in the current browser.
USE CASES / 02
Useful reasons to open bass booster
- Thin listening copy
Add measured low-frequency weight to a quiet or bright recording.
- Kick and bass emphasis
Choose a shelf point that supports the existing rhythm section.
- Device comparison
Export two versions and check how the boost translates across headphones and speakers.
QUESTIONS / PRACTICAL ANSWERS
Questions about this tool
Answers based on the current browser processor—not promises about a future version.
01Is my audio uploaded for processing?
No. Audio samples stay in browser memory. The page may download a codec or model asset, but it does not send the selected file with that request.
02Why can the first run take longer?
This tool uses Low-shelf biquad DSP. A browser may need to download and initialize that runtime before the first operation; later runs can reuse cached assets.
03Can I preview the result before saving?
Yes. Audio-producing tools expose local result players, while analysis and transcription tools show their detected data before download.
04What happens when the browser is unsupported?
The workbench reports the missing capability instead of uploading the media or pretending that processing is still running.
05Do I need an account or install?
No. The tool opens directly in a compatible browser, requires no SoundTools account, and creates its temporary working state on the current device.
06Which frequency should I choose for bass boost?
Around 80–120 Hz emphasizes deep weight; 150–250 Hz reaches further into warmth and can become muddy more quickly.
07Why does a 15 dB setting not sound 15 dB louder overall?
The gain applies to a low shelf, not the whole spectrum, and peak protection may lower the complete result to prevent clipping.