US3564142A
Expired / Lapsed
US
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Method of multiplex speech synthesis
Assignee: International Business Machines Corp
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Filing: 1968-07-30
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Granted: 1971-02-16
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Expires: 1988-07-30
Abstract
Abstract The invention relates to a method of channel vocoder speech synthesis. For representing the speech signals for several independent speech lines, digital speech data stored in data processors are used. In addition, the method provides for the storage of the time-sampled digital description of the transient behaviors of n spectrum channel band-pass filters. Only one such description is needed for synthesizing the speech signals for m speech lines. For a given speech line the transient responses of the band-pass filters are modulated by the frequency function for the given line. The modulated transient values are added for corresponding time samples and stored in a delay line for the given speech line. The stored value of a speech line is released at points in time defined by the excitation function, thus releasing a digital description of the transient response of the set of band-pass filters as if they were excited by a unit pulse and modulated by the frequency function of the given speech line. The digital description is demodulated to an analogue form by conventional means.
Inventors
- 👤 Ernst H Rothauser
- 👤 Kurt F Bandat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:23
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; G; G10; G10L; G10L19/00; G10L19/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
Method of vocoder speech synthesis of speech data, said speech data derived from n filters and includes speech excitation signals, stored in a data processor, comprising the steps of: storing the description of the transient behavior of each of said n filters for simulating said n filters, said transient behavior for each of said n filters being described by the discrete values at k scanning points of said transient behavior; multiplying said description of the transient behavior of each of said n filters, said description consisting of said discrete values of k scanning points, by the speech data associated with the corresponding filter of said n filters; summing the products associated with each scanning point across all said n filters; storing said summations; calling and decodIng said summations at a time dictated by said speech excitation signals; and for converting the speech data into a form capable of synthesizing speech.
Claim 2
Dependent Claim
150 words
Method of vocoder speech synthesis of speech data, said speech data derived from n filters and includes speech excitation signals, stored in a data processor, comprising the steps of: storing the description of the transient behavior of each of said n filters for simulating said n filters, said transient behavior for each of said n filters being described by the discrete values at k scanning points of said transient behavior; multiplying said description of the transient behavior of each of said n filters, said description consisting of said discrete values of k scanning points, by the speech data associated with the corresponding filter of said n filters; summing the products associated with each scanning point across all said n filters; storing said summations; calling and decodIng said summations at a time dictated by said speech excitation signals; and for converting the speech data into a form capable of synthesizing speech.
Claim 3
Dependent Claim
246 words
Method of vocoder multiplex speech synthesis of speech data stored in a data processor, the speech data representing a plurality of speech lines, where the speech data for each speech line is derived from n filters and includes speech excitation signals, comprising the steps of: storing only once the description of the transient behavior of each of said n filters for simulating said n filters, said transient behavior for each of said n filters being described by the discrete values at k scanning points of said transient behavior; multiplying said description of the transient behavior of each of said n filters, said description consisting of said discrete values at k scanning points, by the speech data associated with the corresponding filter of said n filters for each of the plurality of speech lines; summing the product associated with the same scanning point across all said n filters for each of said plurality of speech lines; distributing said summation to a plurality of storage means, one storage means as associated with each speech line; storing said summation associated with each speech line in the storage means of said plurality of storage means associated with that speech line; calling and decoding said summations at a time dictated by said speech excitation signals associated with said plurality of speech lines; and for converting the speech data associated with each speech line into a form capable of synthesizing speech and presenting said converted speech data on corresponding output speech lines.
Claim 4
Dependent Claim
246 words
Method of vocoder multiplex speech synthesis of speech data stored in a data processor, the speech data representing a plurality of speech lines, where the speech data for each speech line is derived from n filters and includes speech excitation signals, comprising the steps of: storing only once the description of the transient behavior of each of said n filters for simulating said n filters, said transient behavior for each of said n filters being described by the discrete values at k scanning points of said transient behavior; multiplying said description of the transient behavior of each of said n filters, said description consisting of said discrete values at k scanning points, by the speech data associated with the corresponding filter of said n filters for each of the plurality of speech lines; summing the product associated with the same scanning point across all said n filters for each of said plurality of speech lines; distributing said summation to a plurality of storage means, one storage means as associated with each speech line; storing said summation associated with each speech line in the storage means of said plurality of storage means associated with that speech line; calling and decoding said summations at a time dictated by said speech excitation signals associated with said plurality of speech lines; and for converting the speech data associated with each speech line into a form capable of synthesizing speech and presenting said converted speech data on corresponding output speech lines.
References Cited (Backward Citations)
US3303335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |