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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Sokolsky, Pierre | First observation of the Greisen-Zatsepin-Kuzmin suppression | The High Resolution Fly's Eye (HiRes) experiment has observed the Greisen-Zatsepin-Kuzmin suppression (called the GZK cutoff) with a statistical significance of five standard deviations. HiRes' measurement of the flux of ultrahigh energy cosmic rays shows a sharp suppression at an energy of 6 x 10^1... | Extensive air showers; Suppression; Energy spectrum; Fluorescence; GZK cutoff | 2008-03 |
| 2 |
 | Sokolsky, Pierre | Observation of the suppression of the flux of cosmic rays above 4×10^19eV | The energy spectrum of cosmic rays above 2.5 x 10^18 eV, derived from 20 000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, J∞ E-γ, at energies between 4 x 10^18 eV and 4 x 10^19 eV is 2.69 ± 0.02(stat) ± 0.06(syst), steepening to 4.2 ... | Extensive air showers; Energy spectrum; Fluorescence; Suppression | 2008-08 |
| 3 |
 | Boll, Steven F. | Suppression of acoustic noise in speech using spectral subtraction | A stand alone noise suppression algorithm is presented for reducing the spectral effects of acoustically added noise in speech. Effective performance of digital speech processors operating in practical environments may require suppression of noise from the digital waveform. Spectral subtraction offe... | Suppression; acoustic noise; noise suppression algorithm; digital speech processors; Spectral subtraction | 1979 |
| 4 |
 | Boll, Steven F. | Suppression of acoustic noise in speech using two microphone adaptive noise cancellation | Acoustic noise with energy greater or equal to the speech is suppressed by filtering a separately recorded correlated noise signal and subtracting it from the speech waveform. This approach was investigated to determine the degree of noise suppression possible using an external correlated input. The... | Suppression; acoustic noise; adaptive noise cancellation | 1979 |
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