Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2011-07-12
2011-07-12
Abebe, Daniel D (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S212000, C375S213000
Reexamination Certificate
active
07979273
ABSTRACT:
The invention is based on the idea of providing a method for high-resolution, waveform-preserving digitization of analog signals, wherein conventional scalar logarithmic quantization is transferred to multi-dimensional spherical coordinates, and the advantages resulting from this, e.g., a constant signal
oise ratio over an extremely high dynamic range with very low loss with respect to the rate-distortion theory. In order to make use of the statistical dependencies present in the source signal for an additional gain in the signal
oise ratio, the differential pulse code modulation (DPCM) is combined with spherical logarithmic quantization. The resulting method achieves an effective data reduction with a high long-term and short-term signal
oise ratio with an extremely small signal delay.
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Haupt Axel
Huber Johannes
Matschkal Bernd
Schmitt Volker
Abebe Daniel D
Friedrich-Alexander-Universitaet Erlangen-Nuernberg
Frommer & Lawrence & Haug LLP
Sennheiser electronic GmbH & Co. KG
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