Soft clipping, hard clipping and aliasing explained
Answer in brief
Hard clipping cuts the wave flat at the ceiling and adds bright, buzzy harmonics. Soft clipping rounds the corner and adds fewer of them. Either one can cause aliasing, false tones folded down from above the highest frequency the sample rate can hold, and oversampling is the usual cure.
What the shape of the cut changes
Picture one cycle of a sine wave. A hard clipper slices off its top and bottom in a straight line and leaves sharp corners. Sharp corners are made of many high harmonics, so the sound gets brighter and buzzier the more you cut. A soft clipper starts bending the wave before it reaches the ceiling and meets the ceiling gently. Its corners are round, so it adds fewer harmonics and they fade faster as they go up.
When hard clipping is the better choice
On very short peaks hard clipping can be the most transparent option. It leaves everything under the ceiling exactly as it was, so the body of a kick or snare does not change. Only the tip of each hit is touched. That is why hard clipping in small amounts is common on drums. Schwabe Digital includes a Hard algorithm in Gold Clip and describes it as leaving the signal intact up to the clip point.
When soft clipping is the better choice
Soft clipping touches more of the signal, since it starts working below the ceiling. In exchange its distortion is gentler. It holds up better on bass, synths and full mixes, where a hard edge would buzz. Pushed further, soft clipping becomes the thick and rounded sound people call saturation. Best Saturation Plugin covers that in depth.
Where aliasing comes from
Digital audio holds frequencies only up to half its sample rate, about 22 kHz at 44.1 kHz. Clipping creates harmonics far above that limit. They cannot be stored where they belong, so they fold back and land at frequencies unrelated to the note. A high synth note can pick up quiet tones below it that slide down while the pitch bends up. On drums aliasing sounds like a grainy, metallic haze over the cymbals.
What oversampling does and what it costs
Oversampling raises the sample rate inside the clipper, clips there and filters out everything above the normal range before coming back down. The harmonics that would have folded back are removed first. Higher factors remove more of them but add latency and use more of your computer. GClip offers a 2x switch, KClip 3 runs from 2x to 32x and StandardCLIP goes up to 256 times. Eventide says the anti-aliasing mode in Saturate removes aliasing better than oversampling, so there is more than one way to solve it.
How to hear aliasing yourself
- Play a single high sine or a bright synth note through the clipper with heavy settings.
- Sweep the pitch slowly upward and listen for faint tones that slide the other way.
- Switch oversampling on and off at the same settings and listen for those tones to vanish.
- Try a cymbal loop the same way. A smoother, more even top end with oversampling on means it was aliasing.
Sources for this page
- Studio 56: Studio 56’s official website, the publisher of this reference.
The practical advice here is our own. A maker's description of its product is not a test of how it performs.
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Cite this page
Best Clipper Plugin. “Soft clipping, hard clipping and aliasing explained.” Studio 56 Reference. Content reviewed November 8, 2026.
https://bestclipperplugin.com/soft-and-hard-clipping/