Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Reexamination Certificate
2005-12-27
2005-12-27
Armstrong, Angela A. (Department: 2654)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
Reexamination Certificate
active
06980957
ABSTRACT:
An audio transmission system and an associated method are disclosed, the system includes a transmitting device suitable for converting an audio signal to a digitized signal, a receiving device suitable for receiving transmissions from the transmitting device, and a phonetic analyzer suitable for comparing the digitized signal to a set of digitized signals stored in a first dictionary. The phonetic analyzer is adapted to transmit, in lieu of the digitized signal, an index value associated with the digitized signal to a receiving device in response to detecting a match between the digitized signal and one of the first dictionary entries. The phonetic analyzer is further adapted to assign an index value to the digitized signal and to store the digitized signal and its corresponding digitized signal in an entry of the first dictionary in response to detecting no match between the digitized signal and any of the first dictionary entries. The phonetic analyzer may be configured to compress the index value prior to transmission. The receiving device includes a second dictionary and a dictionary controller for receiving the index value and the corresponding digitized signal and for storing the index value and the corresponding index value in the second dictionary. Upon detecting an index value that matches to an index value in the second dictionary, the receiving device may be configured to retrieve the corresponding digitized signal from the second dictionary. The phonetic analyzer may assign index values that are indicative of the corresponding digitized signals such that index values assigned to similar digitized signals are similar and index values assigned to dissimilar digitized signals are dissimilar. In this embodiment, upon detecting an index value that fails to match to an index value in the secondary dictionary, the dictionary controller determines a closest matching index value and retrieves the digitized signal corresponding to closest matching index value from the second dictionary.
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Baumgartner Jason Raymond
Malik Nadeem
Roberts Steven Leonard
Armstrong Angela A.
International Business Machines - Corporation
Lally Joseph P.
McBurney Mark E.
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