FR2784206A1 - Speech recognition type device for converting between two different currencies has a means for validating spoken input data and alerting the user if his spoken input has been recognized - Google Patents

Speech recognition type device for converting between two different currencies has a means for validating spoken input data and alerting the user if his spoken input has been recognized Download PDF

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Publication number
FR2784206A1
FR2784206A1 FR9812383A FR9812383A FR2784206A1 FR 2784206 A1 FR2784206 A1 FR 2784206A1 FR 9812383 A FR9812383 A FR 9812383A FR 9812383 A FR9812383 A FR 9812383A FR 2784206 A1 FR2784206 A1 FR 2784206A1
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France
Prior art keywords
recognition
currency
voice
converting
expressed
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FR9812383A
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French (fr)
Inventor
Regis Baran
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D J B
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D J B
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Priority to FR9812383A priority Critical patent/FR2784206A1/en
Priority to FR9901567A priority patent/FR2784207A1/en
Publication of FR2784206A1 publication Critical patent/FR2784206A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00Digital computers in general; Data processing equipment in general
    • G06F15/02Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G06F15/025Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application
    • G06F15/0258Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application for unit conversion
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00Speech recognition
    • G10L15/26Speech to text systems

Abstract

Device includes a speech recognition module for capture of a running total in a first currency, a means for making a currency conversion and a vocal synthesis means for output of the value converted to a second currency. The speech recognition unit includes a database of the 10 figures and up to 20 other words. The speech recognition unit further includes means for measuring the agreement between each term pronounced and a calculator for determination of the level of recognition according to a minimum correlation measure. The validation is initiated when the recognition level exceeds a threshold value or by a manual command.

Description

II

CONVERTISSEUR DE DEVISES A COMMANDE VOCALE  VOICE-CONTROLLED CURRENCY CONVERTER

L'invention concerne un convertisseur de monnaie utilisant une interface vocale entre le calculateur et l'utilisateur. Différents types de convertisseurs sont déjà utilisés dans l'art antérieur, mais tous ont en commun d'être muni d'un clavier numérique ou alphanumérique pour la saisie des nombres à convertir. Ces dispositifs demandent ainsi un certain nombre de manipulations pour entrer les chiffres manuellement. Ces manipulations peuvent vite s'avérer fastidieuses si l'utilisateur n'a pas une grande liberté de mouvement, que ce soit de manière temporaire ou permanente, comme cela peut être le cas pour  The invention relates to a currency converter using a voice interface between the computer and the user. Different types of converters are already used in the prior art, but all have in common that they are provided with a numeric or alphanumeric keyboard for entering the numbers to be converted. These devices thus require a certain number of operations to enter the numbers manually. These manipulations can quickly prove tedious if the user does not have a great freedom of movement, whether temporarily or permanently, as can be the case for

des personnes handicapées.people with disabilities.

Le dispositif objet de l'invention répond à ces inconvénients en proposant un convertisseur utilisant la parole et ne nécessitant que des interventions manuelles restreintes. Ce dispositif est applicable, de manière plus générale, à des calculatrices ou à des opérations  The device object of the invention addresses these drawbacks by proposing a converter using speech and requiring only limited manual intervention. This device is applicable, more generally, to calculators or operations

numériques nécessitant peu de fonctions.  digital devices requiring few functions.

La gestion des commandes vocales nécessite l'emploi de microphones qui enregistrent ces commandes et, dans le même temps, le bruit environnant. La principale difficulté consiste donc à reconnaître les mots et les chiffres prononcés tout en faisant abstraction de ce bruit parasite. Le dispositif objet de l'invention permet de convertir un montant monétaire exprimé vocalement dans une première devise en une deuxième devise qui est aussi exprimée vocalement. Ce dispositif comporte des moyens de reconnaissance vocale pour l'acquisition du montant dans la première devise, des moyens de conversion numérique, et des moyens de synthèse vocale. Le moyen de reconnaissance vocale comporte une base de reconnaissance contenant uniquement les dix chiffres ainsi qu'un nombre de mots inférieur à vingt. Il comporte aussi un moyen de validation du montant acquis par la reconnaissance vocale utilisant un moyen de mesure de corrélation entre chaque terme prononcé et les termes présents dans la base vocale ainsi qu'un calculateur pour évaluer le taux de reconnaissance globale en considérant le minimum des mesures de corrélation. Cette validation est effectuée lorsque le taux de reconnaissance globale dépasse une valeur de seuil paramétrable et par une  The management of voice commands requires the use of microphones which record these commands and, at the same time, the surrounding noise. The main difficulty therefore consists in recognizing the words and numbers spoken while ignoring this parasitic noise. The device which is the subject of the invention makes it possible to convert a monetary amount expressed vocally in a first currency into a second currency which is also expressed vocally. This device includes voice recognition means for acquiring the amount in the first currency, digital conversion means, and voice synthesis means. The voice recognition means comprises a recognition base containing only the ten digits and a number of words less than twenty. It also includes a means of validating the amount acquired by voice recognition using a means of correlation measurement between each term spoken and the terms present in the voice database as well as a calculator to assess the overall recognition rate by considering the minimum of correlation measures. This validation is performed when the overall recognition rate exceeds a configurable threshold value and by a

action manuelle.manual action.

Avantageusement, la base de reconnaissance est  Advantageously, the recognition base is

créée par un apprentissage auprès d'un panel de locuteur.  created by learning from a panel of speakers.

L'invention concerne aussi un procédé de conversion d'un montant monétaire exprimé vocalement dans une première devise en une deuxième devise exprimée vocalement. On procède à l'acquisition vocale d'un montant exprimé dans la première devise, puis on compare les phonèmes acquis avec les phonèmes de référence enregistrés dans une base de reconnaissance contenant uniquement les  The invention also relates to a method for converting a monetary amount expressed by voice in a first currency into a second currency expressed by voice. We proceed with the voice acquisition of an amount expressed in the first currency, then we compare the phonemes acquired with the reference phonemes recorded in a recognition base containing only the

dix chiffres ainsi qu'un nombre de mots inférieur à vingt.  ten digits and fewer than twenty words.

Enfin, on valide la reconnaissance lorsque le taux de corrélation est supérieur à une valeur seuil, et on procède  Finally, we validate the recognition when the correlation rate is greater than a threshold value, and we proceed

à l'adresse d'un calculateur avec le montant ainsi reconnu.  to the address of a calculator with the amount thus recognized.

La figure 1 montre le schéma de fonctionnement  Figure 1 shows the operating diagram

du dispositif.of the device.

La figure 2 donne un exemple de carte  Figure 2 gives an example of a map

permettant d'implémenter ce dispositif.  allowing to implement this device.

Le dispositif est équipé de au moins un bouton (11) permettant d'entrer les données. La conversion se  The device is equipped with at least one button (11) for entering the data. The conversion is

déroule en plusieurs étapes.takes place in several stages.

Par un appui continu sur le bouton d'entrée  By continuous pressing of the input button

(1), on actionne le système de reconnaissance.  (1), the recognition system is activated.

L'utilisateur, tout en maintenant sa pression sur ce bouton, prononce les chiffres de la partie entière du nombre un à un (2). La séparation des termes peut se faire de deux manières. La première consiste à relâcher le bouton entre chaque terme et la seconde, utilisée préférentiellement, consiste à repérer les temps morts entre les termes pour permettre un processus de reconnaissance agréable pour l'utilisateur. Ledit utilisateur prononce ensuite la monnaie d'origine et, enfin, prononce, si cela est nécessaire, les deux chiffres de partie décimale. Après cette opération, il relâche ce bouton et le système essaie de reconnaître les données entrées (3) Le dispositif contient une base de reconnaissance dans laquelle sont mémorisés les différents mots et chiffres, avec plusieurs prononciations possibles pour ces termes. La reconnaissance consiste alors à rechercher le terme de la base qui approche le mieux le terme prononcé. Cette approximation fournit ensuite une valeur mesurant le taux de reconnaissance, qui sera  The user, while holding down this button, pronounces the digits of the whole part of the number one by one (2). There are two ways to separate terms. The first consists in releasing the button between each term and the second, used preferentially, consists in identifying the dead times between the terms to allow a process of recognition pleasant for the user. Said user then pronounces the original currency and, finally, pronounces, if necessary, the two decimal digits. After this operation, he releases this button and the system tries to recognize the entered data (3) The device contains a recognition base in which the different words and numbers are stored, with several possible pronunciations for these terms. Recognition then consists in seeking the term of the base which best approaches the term pronounced. This approximation then provides a value measuring the recognition rate, which will be

avantageusement un pourcentage, pour chaque terme reconnu.  advantageously a percentage, for each recognized term.

Le pourcentage le plus grand donne ainsi le terme le mieux  The larger percentage gives the better term

reconnu.recognized.

Le dispositif considère alors la procédure comme valide à plusieurs conditions. Les conditions de forme sont qu'un mot constituant une devise soit prononcé et que le nombre ait un format correct, c'est-à- dire que l'on obtienne un nombre quelconque, suivi de la mention de devise et, éventuellement, un nombre à deux chiffres. La dernière condition de validité consiste à ce que le minimum des pourcentages de reconnaissance soit supérieur à un seuil donné. La valeur de ce seuil est paramétrable dans le  The device then considers the procedure to be valid under several conditions. The formal conditions are that a word constituting a currency is pronounced and that the number has a correct format, that is to say that one obtains any number, followed by the mention of currency and, possibly two-digit number. The last condition of validity is that the minimum of the recognition percentages is higher than a given threshold. The value of this threshold can be configured in the

dispositif.device.

Si le nombre pas valide, un mot ou un son est émis pour inviter à recommencer la saisie (7). Sinon, la synthèse prononce le nombre en clair, avec la partie entière, la devise, et la partie décimale si elle est non  If the number is not valid, a word or sound is emitted to invite you to start typing again (7). Otherwise, the summary pronounces the number in clear, with the whole part, the currency, and the decimal part if it is not

nulle.nothing.

Dans une première variante, la conversion peut s'effectuer automatiquement après la fin de la  In a first variant, the conversion can be carried out automatically after the end of the

prononciation par le moyen de synthèse vocale (5 et 6).  pronunciation by means of speech synthesis (5 and 6).

Dans une seconde variante avantageuse, la conversion peut s'effectuer après validation par l'utilisateur de la pertinence de la reconnaissance. Cette validation peut être faite par l'appui d'un deuxième bouton ou par la prononciation d'un mot de confirmation dont la reconnaissance n'est elle-même pas validée pour éviter des processus récursifs. Dans les deux cas, chacune des validations ultérieures permet de réentendre la somme  In a second advantageous variant, the conversion can be carried out after validation by the user of the relevance of the recognition. This validation can be done by pressing a second button or by pronouncing a confirmation word whose recognition is not itself validated to avoid recursive processes. In both cases, each of the subsequent validations makes it possible to hear the sum again

entrée et la somme convertie.entry and the sum converted.

Avantageusement, l'appareil s'éteint tout seul au bout d'un temps fixe si aucune action n'a été effectuée  Advantageously, the device switches off by itself after a fixed time if no action has been taken

entre-temps (8).meanwhile (8).

La carte permettant de réaliser les fonctions précédentes peut, de manière préférentielle mais non obligatoire, comporter les éléments distincts suivants: un bouton (11) permettant de mettre en marche le dispositif et un microprocesseur (12) traitant les différentes informations. Elle contient en outre des moyens d'alimentation, comme une pile (19) et un régulateur de tension (18) ainsi qu'un oscillateur (17) qui effectue une synchronisation temporelle. La partie effectue les fonctions vocales peut se composer d'un convertisseur audionumérique (13), d'un microphone (14), ainsi que d'un amplificateur (16) et d'un haut-parleur (15). Cette disposition décrit des éléments séparés les uns des autres, mais l'homme du métier peut aisément trouver des composants  The card making it possible to carry out the above functions may, preferably but not necessarily, include the following separate elements: a button (11) for switching on the device and a microprocessor (12) processing the different information. It also contains supply means, such as a battery (19) and a voltage regulator (18) as well as an oscillator (17) which performs time synchronization. The part performing the voice functions may consist of a digital audio converter (13), a microphone (14), as well as an amplifier (16) and a speaker (15). This arrangement describes elements that are separate from each other, but those skilled in the art can easily find components.

effectuant plusieurs fonctions.performing several functions.

Claims (3)

RevendicationsClaims 1 - Dispositif de conversion d'un montant monétaire exprimé vocalement dans une première devise en une deuxième devise exprimée vocalement, le dispositif comportant des moyens de reconnaissance vocale pour l'acquisition du montant dans la première devise, des moyens de conversion numérique, et des moyens de synthèse vocale caractérisé en ce que le moyen de reconnaissance vocale comporte une base de reconnaissance contenant uniquement les dix chiffres ainsi qu'un nombre de mots inférieur à vingt et en ce qu'il comporte un moyen de validation du montant acquis par la reconnaissance vocale comportant un moyen de mesure de corrélation entre chaque mot prononcé et les mots présents dans la base vocale et un calculateur pour évaluer le taux de reconnaissance globale en considérant le minimum des mesures de corrélation, laquelle validation étant effectuée lorsque le taux de reconnaissance globale dépasse une valeur de seuil  1 - Device for converting a monetary amount expressed by voice in a first currency into a second currency expressed by voice, the device comprising voice recognition means for acquiring the amount in the first currency, digital conversion means, and voice synthesis means characterized in that the voice recognition means comprises a recognition base containing only the ten digits as well as a number of words less than twenty and in that it comprises a means of validating the amount acquired by the recognition vocal system comprising a correlation measurement means between each word spoken and the words present in the vocal database and a computer for evaluating the overall recognition rate by considering the minimum of the correlation measurements, which validation being carried out when the overall recognition rate exceeds a threshold value paramétrable et par une action manuelle.  configurable and by manual action. 2 - Dispositif de conversion d'un montant monétaire selon la revendication principale caractérisé en ce que la base de reconnaissance est créée par un  2 - Device for converting a monetary amount according to the main claim characterized in that the recognition base is created by a apprentissage auprès d'un panel de locuteur.  learning from a panel of speakers. 3 - Procédé de conversion d'un montant monétaire exprimé vocalement dans une première devise en une deuxième devise exprimée vocalement caractérisé en ce que l'on procède à l'acquisition vocale d'un montant exprimé dans la première devise, en ce que l'on compare les phonèmes acquis avec les phonèmes de référence enregistrés dans une base de reconnaissance contenant uniquement les dix chiffres ainsi qu'un nombre de mots inférieur à vingt et en ce que l'on valide la reconnaissance lorsque le taux de corrélation est supérieur à une valeur seuil, et en ce que l'on procède à l'adresse d'un calculateur avec le  3 - Method for converting a monetary amount expressed by voice in a first currency into a second currency expressed by voice characterized in that one proceeds to the voice acquisition of an amount expressed in the first currency, in that the the acquired phonemes are compared with the reference phonemes recorded in a recognition base containing only the ten digits and a number of words less than twenty and in that the recognition is validated when the correlation rate is greater than one threshold value, and in that we proceed to the address of a computer with the montant ainsi reconnu.amount thus recognized.
FR9812383A 1998-10-02 1998-10-02 Speech recognition type device for converting between two different currencies has a means for validating spoken input data and alerting the user if his spoken input has been recognized Withdrawn FR2784206A1 (en)

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FR9812383A FR2784206A1 (en) 1998-10-02 1998-10-02 Speech recognition type device for converting between two different currencies has a means for validating spoken input data and alerting the user if his spoken input has been recognized
FR9901567A FR2784207A1 (en) 1998-10-02 1999-02-10 Speech recognition type device for converting between two different currencies has a means for validating spoken input data and alerting the user if his spoken input has been recognized

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811448A1 (en) * 2000-07-07 2002-01-11 Paul Galbois Device for converting price in one currency to another has microphone to receive value for conversion and loudspeaker for reproducing voice synthesized result of operation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06175689A (en) * 1992-12-07 1994-06-24 Ricoh Co Ltd Voice recognition reaction device
EP0844569A1 (en) * 1996-11-22 1998-05-27 Caisse Régionale de Crédit Agricole Mutuel du Gard Speech recognition device for currency conversion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06175689A (en) * 1992-12-07 1994-06-24 Ricoh Co Ltd Voice recognition reaction device
EP0844569A1 (en) * 1996-11-22 1998-05-27 Caisse Régionale de Crédit Agricole Mutuel du Gard Speech recognition device for currency conversion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 513 (P - 1805) 27 September 1994 (1994-09-27) *
TOHKURA: "A weighted cepstral distance measure for speech recognition", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP 86), vol. 1, 7 April 1986 (1986-04-07) - 11 April 1986 (1986-04-11), TOKYO, JP, pages 761 - 764, XP002088868 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811448A1 (en) * 2000-07-07 2002-01-11 Paul Galbois Device for converting price in one currency to another has microphone to receive value for conversion and loudspeaker for reproducing voice synthesized result of operation

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