US6009384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coding human speech by joining source frames and an apparatus for reproducing human speech so coded
Assignee: US Philips Corp
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Filing: 1997-05-20
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Granted: 1999-12-28
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Expires: 2017-05-20
Abstract
Abstract For coding human speech for subsequent audio reproduction thereof, a plurality of speech segments is derived from speech received, and systematically stored in a data base for later concatenated readout. After the deriving, respective speech segments are fragmented into temporally consecutive source frames, similar source frames as governed by a predetermined similarity measure thereamongst that is based on an underlying parameter set are joined, and joined source frames are collectively mapped onto a single storage frame. Respective segments are stored as containing sequenced referrals to storage frames for therefrom reconstituting the segment in question.
Inventors
- 👤 Raymond N. J. Veldhuis
- 👤 Paul A. P. Kaufholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/04; G10L19/08; G10L19/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A method for coding human speech for subsequent audio reproduction thereof, said method comprising the steps of deriving a plurality of speech segments from speech received, and systematically storing said segments into a data base for later concatenated readout, characterized in that said speech segments are of non-uniform length and, after said step of deriving, (a) respective speech segments are fragmented into temporally consecutive source frames of uniform length, (b) similar source frames as governed by a predetermined similarity measure thereamongst that is based on an underlying parameter set are identified and joined, (c) joined source frames are collectively mapped onto a single storage frame, and (d) respective segments a restored as containing sequenced referrals to storage frames for therefrom reconstituting the segment in question.
Claim 2
Independent Claim
125 words
A method for coding human speech for subsequent audio reproduction thereof, said method comprising the steps of deriving a plurality of speech segments from speech received, and systematically storing said segments into a data base for later concatenated readout, characterized in that said speech segments are of non-uniform length and, after said step of deriving, (a) respective speech segments are fragmented into temporally consecutive source frames of uniform length, (b) similar source frames as governed by a predetermined similarity measure thereamongst that is based on an underlying parameter set are identified and joined, (c) joined source frames are collectively mapped onto a single storage frame, and (d) respective segments a restored as containing sequenced referrals to storage frames for therefrom reconstituting the segment in question.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1, wherein the segments are stored in the form of a representation of the associated source frames that provide the associated similarity measure.
Claim 4
Dependent Claim
14 words
A method as claimed in claim 1, based on LPC-parameter coding of the frames.
Claim 5
Dependent Claim
44 words
A method as claimed in claim 1, wherein the similarity measure is based on calculating a distance quantity: ##EQU6## wherein ##EQU7## indicating how well a k performs as a prediction filter for a signal with a spectrum given by {1/|A l (exp(jθ))| 2 }.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 4, wherein the 1-dependent variance factor σ l 2 is assumed equal to 1.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 1, wherein a code book is generated as a set of code sub-books that each pertain to a respective subset of the prediction vectors.
Claim 8
Dependent Claim
33 words
A method as claimed in claim 1, wherein said segments are excised under control of belled windows that are staggered in time as based on an instantaneous pitch period of the received speech.
References Cited (Backward Citations)
EP0557940A2
Cited
EP0607989A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-27 | 2003-06-28 | 2003-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-27 | 2007-06-28 | 2007-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-27 | 2011-06-28 | 2011-12-28 | $7700.00 | Window Closed / Lapsed |