Interactive speech pronunciation apparatus and method

• US 5,393,236 A
• Filed: 09/25/1992
• Issued: 02/28/1995
• Est. Priority Date: 09/25/1992
• Status: Expired due to Term

• Current Assignee: Northeastern University
• Original Assignee: Northeastern University
• Inventors: Ferrier, Linda J., Blackmer, Elizabeth R.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Cheng, Joe H.
• Application Number:
  US07/951,675
• Time in Patent Office: 886 Days
• Field of Search: 434/156, 434/167, 434/169, 434/185, 434/307-309, 434/319, 434/320, 434/365, 381/35, 381/43, 381/51-53, 364/419, 364/419.01, 364/419.03, 395/2, 395/152, 395/927
• US Class Current: 434/169
• CPC Class Codes: G09B 19/04 Speaking with audible presentation of the material to be studied G09B5/04
• CPC Class Codes: G09B 7/04 characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question, supplying a further explanation

Abstract

An interactive speech pronunciation system for teaching pronunciation and reducing the accent of a user includes a memory for storing a plurality of presequenced lessons, an input interface for allowing a user to select predetermined ones of the presequenced lessons, a processor for executing program steps corresponding to the lessons selected by the user, and a monitor for displaying visual indicators to the user of the system. The speech pronunciation system further includes an audio input device, for recording sounds spoken by the user, an audio output device for transducing signals fed thereto to pre-recorded sounds and a speech processor for providing stored signals to the audio output device.

Claims

1. An interactive computer system for teaching pronunciation and accent reduction to a user comprises:

a processor;

a memory, coupled to said processor, said memory having stored therein a set of instructions corresponding to a plurality of presequenced accent reduction lessons for execution in a predetermined order by said processor wherein the predetermined order is determined by the user selecting a first one of;

(a) the native language of the user; and

(b) a subject area, wherein said subject area is selected from the group consisting of an engineering subject area and a physical science subject area;

an input interface, coupled to said processor, for providing a user with control over the sequence in which the accent reduction lessons are executed by said processor;

a monitor, coupled to said processor, for displaying visual indicators to the user, wherein said visual indicators correspond to said instructions;

an audio input/output device, coupled to said processor, for recording sounds spoken by a user and for playing prerecorded sounds stored in said memory; and

a speech processor, coupled to said processor and said audio input/output device, for providing stored signals to said audio input/output device, wherein in response to an instruction displayed on said monitor, a user speaks a sound into said audio input/output device and the sound is stored in said memory and the sound corresponds to a first one of;

(a) a word;

(b) a phrase; and

(c) a sentence; and

wherein said pre-recorded sounds in said memory correspond to stored digitized signals representative of the sound spoken by the user into said audio input/output device.

2. The interactive computer system of claim 1, wherein:

in response to a predetermined instruction, a user speaks a sound into said audio input/output device and said sound is stored in the memory as a stored signal and said sound corresponds to a first one of;

(a) a word;

(b) a phrase; and

(c) a sentence; and

said pre-recorded sounds stored correspond to sequenced and stored digitized signals representative of the sound spoken into said audio input/output device,

graphical user interface to Select program options and perform selected lessons;

the processor calculates the percentage of correct and incorrect utterances spoken by the user; and

the processor stores a result corresponding to the percentage of correct and incorrect utterances spoken by the user in a first predetermined memory location dedicated to the user.

3. The interactive computer system of claim 2, wherein:

prior to said user speaking into said audio input/output device, said speech processor provides a signal to said audio input/output device wherein said signal corresponds to a model sound and the sound the user speaks into said audio input/output device corresponds to an imitation of said model sound;

in response to an instruction, said speech processor provides the signal corresponding to the model sound to said audio input/output device; and

in response to an instruction executed by said processor, said speech processor provides via said audio input/output device, an audio signal corresponding to the user'"'"'s imitation of the model sound.

4. The interactive computer system of claim 3 wherein the model sound has a sound pattern having a particular complexity and when said audio input/output device provides the signal corresponding to the model sound, said audio input/output device also provides a presequenced series of sound targets sequenced according to the complexity of the sound pattern.

5. The interactive computer system of claim 1, wherein:

the input interface includes an input terminal and a graphical user interface, and the number of correct and incorrect utterances spoken by the user are recorded by an instructor using the input terminal while the user simultaneously utilizes the

6. A method for teaching pronunciation and accent reduction to a user, said method comprising the steps of:

displaying a first menu on a monitor, said first menu having a first plurality of user selectable options;

selecting, with a user interface device, a first user selectable option from said first plurality of user selectable options wherein said first user selectable option is selected according to a first one of the following criteria;

a first language corresponding to a native language of a user;

a first subject area, wherein said first subject area is selected from the group consisting of an engineering subject area and a physical science subject area; and

a phonetic stress pattern; and

executing in a predetermined order by a processor, a plurality of steps determined by the first user selectable option selected in said selecting step, wherein when said first user selectable option is selected according to a first language, said plurality of steps correspond to a first lesson plan to teach pronunciation and accent reduction to a user, wherein said first lesson plan is organized according to the selected first language and when said first user selectable option is selected according to a second different language, said plurality of steps correspond to a second lesson plan to teach pronunciation and accent reduction to the user, wherein said second lesson plan is organized according to the selected second language and wherein the organization of the first and second lesson plans is different.

7. The method of claim 6 wherein:

said executing step further comprises the steps of;

displaying a second menu on said monitor, said second menu having a second plurality of user selectable options; and

selecting, with a user interface device, a first menu option from said second plurality of user selectable options.

8. The method of claim 7 further comprising the steps of:

executing said first menu option; and

displaying a first one of said first and second menus.

9. A method for teaching accent reduction and speech pronunciation to a user comprising the steps of:

performing a diagnostic test on the user;

computing the results of said diagnostic test; and

executing, in a processor, a plurality of lessons stored in a memory to teach pronunciation and accent reduction to the user wherein the order in which said lessons are executed is determined by the results of said diagnostic test computed in said computing step and wherein said diagnostic test comprises the steps of;

recording, with an audio input/output device, at least one word spoken by the user;

grading, by a second user, said at least one word with a predetermined grading criteria;

calculating, in said processor, a value corresponding to the results of the grading step; and

calculating a suggested lesson plan, in said processor, wherein said suggested lesson plan corresponds to a series of lessons having a predetermined order, said series of lessons corresponding to selected lessons from a plurality of lessons stored in a memory, wherein said predetermined order of lessons is determined in response to the calculating a value step.

10. The method of claim 9, wherein said method of performing the diagnostic test further comprises the steps of:

storing the suggested lesson plan in a first predetermined memory location;

storing the suggested lesson plan in a second predetermined memory location; and

displaying the suggested lesson plan on a monitor.

11. The method of claim 9, wherein the step of recording at least one word spoken by the user includes the step of playing each of said at least one words with the audio input/output device such that the user is able to listen to each of the at least one words.

12. The method of claim 9, wherein said grading step further includes the steps of:

indicating the number of correct and incorrect utterances spoken by the user; and

summing, by said processor, for each of the presequenced lessons the number of incorrect utterances spoken by the user in each particular presequenced lesson.