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This is a comparison of output digital signal with and without DASE technology applied, showing the noise floor dramatic improvement provided by the DASE process, especially on small signals. This explains the considerable increase of intelligibility provided by DASE.
About the measures published below :
· All the measures are given on relative scales. This means that the input is always considered to be at 0 dB level. This allows for easy comparison between the two results.
· Input is a 1 kHz sine wave given in 32 bit floating point format at different levels compared to full scale: -10dB, -65dB and - 100dB.
· Output is quantified to 16 bit integer format using dither.
· Measures are done on the output using a 8192 point FFT with Kaiser-Bessel window, alpha = 4.
| Let's start first with a strong signal, not very endangered by noise floor but which is affected by typical digital distortion. See the harmonics that DASE removes in addition to the noise floor improvement. |
| 1 kHz sine wave, -10 dB relative to full scale, without DASE |
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1 kHz sine wave, -10 dB relative to full scale, with DASE |
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| And now with a smaller signal. Distortion disappears and the noise floor improvement is moresignificant, providing more detail in small signals. |
| 1 kHz sine wave, -65 dB relative to full scale, without DASE |
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1 kHz sine wave, -65 dB relative to full scale, with DASE |
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| With a very small signal, the distortion is not there anymore, but note the dramatic improvement in noise floor. The mall details are considerably enhanced, improving the recognition factor, space information and nuances. |
| 1 kHz sine wave, -100 dB relative to full scale, without DASE |
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1 kHz sine wave, -100 dB relative to full scale, with DASE |
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