Automated TTS self correction system

The present application claims the benefit of U.S. Patent Application No. 62/445,262 for an Automated TTS Self Correction System filed Jan. 12, 2017, which is hereby incorporated by reference in its entirety.

The present invention relates to text-to-speech systems, and specifically to a method of automated pronunciation correction.

Generally speaking, the text-to-speech (TTS) system user experience is influenced by a correct pronunciation of a product name, its location and description, abbreviations, units of measurement, and other raw data entered into the TTS system. To improve the user experience, an option should exist for the user to mark and correct the mispronounced words and phrases, followed by an instant incorporation of the changes back into the workflow.

Standard means for a TTS pronunciation correction lack an ability to instantly incorporate the changes suggested by the user. For example, in U.S. Pat. No. 9,275,633 by Cath et al., the pronunciation corrections provided by users are then stored in a database for further analysis and approval, and do not provide an immediate pronunciation update. In U.S. Pat. No. 6,363,342 by Shaw et al., the editing tool limits the corrections to the words marked by the user, and does not extrapolate the user input to similar words. Additionally, no instant pronunciation update is provided in response to the user feedback as well. Similarly, in U.S. Pat. No. 8,666,746 by Bangalore et al., no on-the-fly TTS system correction is offered after the user input. In U.S. App. No. 20,070,016,421 by Nurminen et al., the invention does not offer a way to immediately incorporate the corrected entry back into the workflow either.

Therefore, a need exists for a streamlined method of on-the-fly user interaction with a TTS system, which can provide convenient means of pronunciation correction combined with an instant feedback in response to the user entry. Such feedback can include an updated pronunciation of the corrected entry, and may be further extrapolated to the pronunciation of similar entries.

Accordingly, the present invention embraces a method for an automated text-to-speech correction.

In an exemplary embodiment, a method for text-to-speech engine correction includes identifying an occurrence of an error in a phonetic string pronunciation; triggering a correction sequence in response to a control signal; prompting a user to enter a correction of the identified error; and processing the correction of the phonetic string provided by the user.

In another exemplary embodiment, a method for text-to-speech pronunciation correction includes initiating a correction of a pronunciation error; receiving an input from a user for the correction of the error; and updating the pronunciation based on the input from the user.

In yet another exemplary embodiment, a method for pronunciation improvement includes receiving a request from an operator to initiate correction of a mispronounced entry; prompting the operator to enter a corrected pronunciation; pronouncing the corrected pronunciation entry back to the operator; prompting the operator to confirm the entry, or edit the entry by returning to the entering step; and replacing the mispronounced entry with the confirmed corrected entry.

The foregoing illustrative summary, as well as other exemplary objectives and/or advantages of the invention, and the manner in which the same are accomplished, are further explained within the following detailed description and its accompanying drawings.

FIG. 1 schematically depicts a method for text-to-speech engine correction, according to an embodiment.

FIG. 2 schematically depicts a method for text-to-speech pronunciation correction, according to an embodiment.

FIG. 3 schematically depicts a method for pronunciation improvement, according to an embodiment.

The present invention embraces methods for automatic text-to-speech (TTS) correction.

FIG. 1 shows a method 100 for text-to-speech engine correction, according to an embodiment. At 102 , an occurrence of an error in a phonetic string pronunciation produced by a TTS engine is identified by a user of the TTS engine. At 104 , a correction sequence is triggered in response to a control signal provided by the user. At 106 , the user is prompted to enter a correction of the identified error in the phonetic string. At 108 , the correction of the phonetic string provided by the user is processed.

In an embodiment, providing the control signal can include speaking a predetermined control word and/or pressing a predetermined function key. The method 100 can further include processing the correction provided by the user to correct pronunciation of one or more similar phonetic strings. Additionally or alternatively, the method 100 can further include exchanging the corrected pronunciation of the phonetic string with an external database. In an embodiment, the phonetic string can include one or more syllables, an abbreviation (for example, an abbreviation of a measurement unit), one or more words or phrases (for example, a product name, its description and location, and other raw data entered into the TTS engine).

FIG. 2 shows a method 200 for text-to-speech pronunciation correction, according to an embodiment. At 202 , a correction of a pronunciation error produced by a TTS system is initiated by a user of the TTS system. At 204 , an input for the correction of the pronunciation error is received from the user. At 206 , the pronunciation is updated based on the input provided by the user.

In an embodiment, providing the user input can include providing one or more voice sample recordings. Additionally or alternatively, providing the user input can include selecting a one or more correct phonetics from a predetermined list of pronunciation options. The selected options may then be echoed back to the user. Additionally or alternatively, providing the user input can include entering the correction from a keyboard. The entered correction may then be echoed back to the user.

FIG. 3 shows a method 300 for pronunciation improvement, according to an embodiment. At 302 , a request is received from an operator of a text-to-speech application to initiate correction of a mispronounced text-to-speech entry. At 304 , the operator is prompted to enter a corrected pronunciation. At 306 , the corrected pronunciation entry is pronounced back to the operator. At 308 , the operator is prompted to confirm the entry, or edit the entry by returning to the entering step 304 . At 310 , the mispronounced entry is replaced with the confirmed corrected entry.

In an embodiment, the method 300 can further include prompting the operator to select a method of correction from a predetermined list of methods. For example, the method of correction can include providing one or more voice recording entries, a manual entry from a keyboard, and/or choosing an entry from a predetermined list of phonetic strings. Additionally, the method 300 may further include using the operator input to iteratively generate phonetic suggestions for the operator to select from, thus allowing the operator to choose the most accurate option on-the-fly. In an embodiment, the method 300 can further include using the confirmed entry to update pronunciation of similar words and/or phrases. Receiving a request to initiate correction of a mispronounced entry may include correction of a misspelled entry. Additionally, the pronunciation error may result from an inaccurate translation of the entry from a first language into a second language.

Device and method components are meant to show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. In various embodiments, the sequence in which the elements of appear in exemplary embodiments disclosed herein may vary. Two or more method steps may be performed simultaneously or in a different order than the sequence in which the elements appear in the exemplary embodiments.

To supplement the present disclosure, this application incorporates entirely by reference the following commonly assigned patents, patent application publications, and patent applications:

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In the specification and/or figures, typical embodiments of the invention have been disclosed. The present invention is not limited to such exemplary embodiments. The use of the term “and/or” includes any and all combinations of one or more of the associated listed items. The figures are schematic representations and so are not necessarily drawn to scale. Unless otherwise noted, specific terms have been used in a generic and descriptive sense and not for purposes of limitation.