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US 5,675,709 AGranted
System for efficiently processing digital sound data in accordance with index data of feature quantities of the sound data
AssigneeFuji Xerox Co., Ltd.
InventorTakeshi Chiba
Life of this patent
Estimating the term…
Abstract
A sound processing system is provided in which a sound signal is stored in a sound data storing unit in the form of digital sound data. The digital sound data is analyzed to obtain a physical feature quantity of the sound signal. Index data indicative of a quantity feature of the sound signal is generated by discriminating a physical feature quantity of the sound signal, and it is stored in an index data storing unit. The digital sound data is processed in accordance with the index data by a data processing unit.
Claims21
A sound processing system using sound feature data comprising:
- sound data storing means for storing a sound signal in the form of digital sound data;
- analyzing means for analyzing the digital sound data of the input sound signal by segments of the digital sound data to obtain sound feature data related to a physical feature quantity of the sound signal;
- discriminating means for discriminating an attribute of the physical feature quantity of the sound signal by segments of the digital sound data referring to a criterion according to which at least some of the sound feature data of the segments are significant and generating index data showing the attribute discriminated;
- index data storing means for storing said index data showing the attribute discriminated for at least significant sound feature data in association with the digital sound data;
- and
- data processing means for further processing the digital sound data to produce a modified intelligible signal, including
- means for reading out from said index data storing means index data showing the attribute discriminated for the significant sound feature data, together with the associated digital sound data;
- and
- means for utilizing at least the digital sound data the segments having significant sound feature data.
6 more elements
A sound processing system using sound feature data comprising:
- input means for inputting a sound signal;
- digitizing means for converting the input sound signal into digital sound data;
- sound data storing means for storing the digital sound data;
- pre-processing means for extracting a feature quantity of the sound signal from the digital sound data and assigning index data for the feature quantity of the sound signal to the digital sound data;
- including
- analyzing means for analyzing the digital sound data of the input sound signal by segments of the digital sound data to obtain sound feature data related to the feature quantity of the sound signal;
- and
- discriminating means for discriminating an attribute of the feature quantity of the sound signal by segments of the digital sound data referring to a criterion according to which at least some of the sound feature data of the segments are significant and generating the assigned index data as index data showing the attribute discriminated;
- index data storing means for storing the generated index data in association with at least segments of the digital sound data having significant sound feature data;
- and
- processing means for further processing the digital sound data to produce a modified intelligible signal, including
- means for applying at least the segments of the digital sound data having significant sound feature data by reference to the generated index data showing the attribute discriminated.
9 more elements
A sound processing system using sound feature data comprising:
- input means for inputting a sound signal;
- digitizing means for converting the input sound signal into digital sound data;
- pre-processing means for extracting a feature quantity of the sound signal from the digital sound data and attaching index data of the feature quantity of the sound signal to the digital sound data;
- including
- analyzing means for analyzing the digital sound data of the input sound signal, thereby obtaining a physical feature quantity of the sound signal;
- and
- discriminating means for discriminating an attribute of the physical feature quantity of the sound signal by segments of the digital sound data referring to a criterion according to which at least some of the sound feature data of the segments are significant and generating the attached index data showing the attribute discriminated;
- and
- processing means for further processing the digital sound data in accordance with the index data attached to the digital sound data, including
- means for applying at least the segments of the digital sound data having significant sound feature data by reference to the attached index data showing the attribute discriminated, to produce an intelligible output.
7 more elements
A sound processing system using sound feature data comprising:
- an analog analyzer that analyzes the magnitude of the waveform energy of an input sound signal for each segment of the sound signal and produces consecutive sound feature quantities for the sound signal;
- discriminating means for discriminating an attribute of each sound feature quantity of the sound signal by segments of the sound signal referring to a criterion according to which at least some of the sound feature quantities of the segments are significant and generating index data showing the attribute discriminated for each corresponding segment;
- index data storing means for storing the generated index data in association with at least segments of the sound signal having significant sound feature quantities:
- and
- processing means for further processing the sound signal to produce a modified intelligible signal, including
- means for applying at least the segments of the sound signal having significant sound feature quantities by reference to the generated index data showing the attribute discriminated.
3 more elements
A sound processing system using sound feature data comprising:
- an analog analyzer that analyzes the number of zero-crossings of waveform energy for each segment of a received sound signal, to produce a sound feature quantity of the sound signal;
- discriminating means for discriminating an attribute of each sound feature quantity of the sound signal by segments of the sound signal referring to a criterion according to which at least some of the sound feature quantities of the segments are significant and generating index data showing the attribute discriminated for each corresponding segment;
- index data storing means for storing the generated index data in association with at least segments of the sound signal having significant sound feature quantities:
- and
- processing means for further processing the sound signal to produce a modified intelligible signal, including
- means for applying at least the segments of the sound signal having significant sound feature quantities by reference to the generated index data showing the attribute discriminated.
3 more elements
A sound processing system using sound feature data comprising:
- a frequency-domain analyzer that analyzes the magnitude of power of a received sound signal in the frequency domain for each segment of the sound signal, to produce a sound feature quantity of the sound signal segment;
- discriminating means for discriminating an attribute of each sound feature quantity of the sound signal by segments of the sound signal referring to a criterion according to which at least some of the sound feature quantities of the segments are significant and generating index data showing the attribute discriminated for each corresponding segment;
- index data storing means for storing the generated index data in association with at least segments of the sound signal having significant sound feature quantities:
- and
- processing means for further processing the sound signal to produce a modified intelligible signal, including
- means for applying at least the segments of the sound signal having significant sound feature quantities by reference to the generated index data showing the attribute discriminated.
3 more elements
A sound processing system using sound feature data comprising:
- an analog analyzer that analyzes the average value of the magnitudes of a received sound signal, thereby producing a physical feature quantity of the sound signal;
- discriminating means for discriminating an attribute of each sound feature quantity of the sound signal by segments of the sound signal referring to a criterion according to which at least some of the sound feature quantities of the segments are significant and generating index data showing the attribute discriminated for each corresponding segment;
- index data storing means for storing the generated index data in association with at least segments of the sound signal having significant sound feature quantities:
- and
- processing means for further processing the sound signal to produce a modified intelligible signal, including
- means for applying at least the segments of the sound signal having significant sound feature quantities by reference to the generated index data showing the attribute discriminated.
3 more elements
A sound processing system comprising:
- input means for inputting a sound signal;
- digitizing means for converting the input sound signal into digital sound data;
- at least first and second analyzing means for extracting feature quantities of the sound signal;
- at least one discriminating means for discriminating significant and insignificant segments of each feature quantity extracted by said analyzing means, and for transferring only signal data of the significant segments to the subsequent analyzing means;
- means for associating index data corresponding to the significant and insignificant segments with respective portions of the digital sound data;
- and
- processing means for further processing the digital sound data in accordance with the associated index data to produce an intelligible analog output.
4 more elements
A sound processing system comprising:
- input means for inputting a sound signal digitizing means for converting the input sound signal into digital sound data;
- a plurality of analyzing means for successively extracting feature quantities of a sound signal;
- a plurality of discriminating means for discriminating significant and insignificant segments of each feature quantity extracted by said analyzing means, and for transferring only signal data of the significant segments to the subsequent analyzing means;
- means for associating index data corresponding to the significant and insignificant segments with respective portions of the digital sound data;
- and
- processing means for processing the digital sound data in accordance with the associated index data.
3 more elements
Dependencies are inferred from the claim text.