About

This is not just another basic cutter; it is a client-side Audio Workstation optimized for zero-latency editing. Unlike server-side tools that require uploading large files (risking privacy and wasting bandwidth), this application processes the binary AudioBuffer directly in your browser's RAM using the Web Audio API.

Precision is the core differentiator. Standard tools often cut on "frame boundaries" (causing drift), but this architecture allows for sample-accurate trimming at 44.1 kHz or 48 kHz. It solves the "Clicking Problem" by allowing users to visualize the waveform amplitude and apply algorithmic Linear Ramp fades to the entry and exit points, ensuring seamless looping and professional transitions.

Formulas

To calculate the uncompressed file size of an audio segment, we use the PCM bit-stream formula:

Size_bytes = t × f_s × BitDepth × Ch8

Where t is duration in seconds, f_s is sample rate (Hz), and Ch is the number of channels (1 for Mono, 2 for Stereo).

The decibel (dB) scale for digital audio (dBFS) is calculated as:

L_dB = 20 × log₁₀(|A|A_max)

Reference Data

Format / Parameter	Bitrate / Value	Frequency Range	Dynamic Range	File Size (1 min Stereo)
CD Quality (WAV)	1411 kbps	20 Hz - 22 kHz	96 dB	~10.5 MB
Studio Master (24-bit)	2304 kbps	20 Hz - 48 kHz	144 dB	~17.3 MB
MP3 (High Quality)	320 kbps	20 Hz - 20 kHz	Variable	~2.4 MB
MP3 (Standard)	128 kbps	20 Hz - 16 kHz	Variable	~0.9 MB
Human Speech (VoIP)	64 kbps	300 Hz - 3.4 kHz	Low	~0.5 MB
Silence Threshold	−60 dB	N/A	N/A	N/A
Sample: 44.1kHz	44,100 samples/s	Nyquist: 22.05 kHz	Standard	Reference
Sample: 48kHz	48,000 samples/s	Nyquist: 24 kHz	Video Standard	+8% larger
Sample: 96kHz	96,000 samples/s	Nyquist: 48 kHz	Audiophile	+117% larger
Fade Duration (Pop)	5 - 10 ms	Micro-fade	N/A	Removes Clicks
Fade Duration (Song)	2000 - 5000 ms	Outro	N/A	Smooth End

Frequently Asked Questions

No. This tool is 100% client-side. Your audio file is decoded by your browser's internal engine (Web Audio API) and stays in your device's RAM. Nothing is ever transmitted over the internet.

WAV is a lossless container. If we exported to MP3, the browser would have to re-compress the audio, causing "generation loss" (degradation of quality) and potential timing artifacts. You can convert the resulting pristine WAV to MP3 later if needed.

Yes. While the visualizer combines channels for a cleaner UI, the export engine creates an "Interleaved Stereo" file, preserving the left/right panning of your original recording.

That "pop" is a spectral discontinuity. Use the "Fade Out" feature. Even a very short fade (0.01s) is enough to bring the waveform down to zero amplitude smoothly, eliminating the mechanical click.

If your audio is very quiet, the waveform might look like a flat line. This doesn't mean the audio is broken; it just has low amplitude. We are working on a "Normalize" feature, but for now, you can edit it visually or use the playback to guide you.

Yes, but with limitations. Decoding large uncompressed audio files requires significant RAM. Short clips (ringtones, voice notes) work perfectly, but attempting to edit a 1-hour podcast on a low-end phone may crash the browser tab.