SInES Tools: Spectral Stamper (Apply the spectral envelope of an audio file as a dynamic 3D filter)
 
1. The Stamp (Template)
2. The Source (Material)
3. Filter Settings
Spectral Contrast: 1.0x
Spectral cloud effect: low spectral contrast (0,3-0,5) and high spectral smoothing (>80)

Spectral Smoothing (from metallic to cloudy): 32
Low: sharp/metallic - Medium (24-40): best for speech - High (>64): blurry, cloudy
4. Process
5. Result
Please upload an Audio file as a Stamp (Template).
Log-Frequency Spectrogram of Stamped Result
 Analysis Parameters: Window Size: 4096 Samples (Pitch, autocorr.: 2048 Samples) | Hop Size: 1024 Samples
| FFT Size: 4096 | Sample Rate: dependent on audio file
Spectral Stamper © 2026 by Christoph Reuter and SInES (last modified: 14.9.2026) is released under MIT License
Translation of the Chinese version of the website: Li Hao
How to cite: Reuter, C. (2026). SInES Tools: Spectral Stamper. Web Application https://sinestools.univie.ac.at/spectralstamper.htm