Method, system and software for teaching pronunciation
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Abstract
The present invention relates to a method for teaching pronunciation. More particularly, but not exclusively, the present invention relates to a method for teaching pronunciation using formant trajectories and for teaching pronunciation by splitting speech into phonemes. (A) A speech signal is received from a user; (B) word(s) is/are detected within the signal; (C) voice/unvoiced segments are detected within the word(s); (D) formants of the voiced segments are calculated; (E) vowel phonemes are detected with the voiced segments; the vowel phonemes may be detected using a weighted sum of a Fourier transform measure of frequency energy and a measure based on the formants; and (F) a formant trajectory may be calculated for the vowel phonemes using the detected formants.
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Citations
119 Claims
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1-77. -77. (canceled)
- 78. A method of teaching pronunciation using a display derived from formant trajectories of vowel phonemes.
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88. A method of teaching pronunciation, including the steps of:
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i) receiving a speech signal from a user;
ii) detecting a word from the signal;
iii) detecting voice/unvoiced segments within the word;
iv) detecting formants in the voiced segments;
v) detecting vowel phonemes within the voiced segments; and
vi) calculating a formant trajectory for the vowel phonemes using the detected formants. - View Dependent Claims (89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 112, 115, 118)
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103. A method for teaching pronunciation, including the steps of:
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i) receiving a speech signal from a user;
ii) detecting a word from the signal;
iii) detecting voice/unvoiced segments within the word;
iv) detecting formants in the voiced segments; and
v) detecting vowel phonemes within the voiced segments by a weighted sum of a Fourier transform measure of frequency energy and a measure based on the formants. - View Dependent Claims (104, 105, 106, 107, 113, 116, 119)
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108. A system for teaching pronunciation, including a display device which displays one or more graphical characteristics derived from formant trajectories of vowel phonemes.
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109. A system for teaching pronunciation, including:
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i) a audio input device which receives a speech signal from a user;
ii) a processor adapted to detect a word from the signal;
iii) a processor adapted to detect voice/unvoiced segments within the word;
iv) a processor adapted to detect formants in the voiced segments;
v) a processor adapted to detect vowel phonemes within the voiced segments; and
vi) a processor adapted to calculate a formant trajectory for the vowel phonemes using the detected formants.
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110. A system for teaching pronunciation, including:
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vii) a audio input device which receives a speech signal from a user;
viii) a processor adapted to detect a word from the signal;
ix) a processor adapted to detect voice/unvoiced segments within the word;
x) a processor adapted to detect formants in the voiced segments; and
xi) a processor adapted to detect vowel phonemes within the voiced segments by calculating a weighted sum of a Fourier transform measure of frequency energy of the voiced segments and a Linear Predicative Coding (LPC) analysis of the formants.
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Specification