Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A method for generating the voiced portion of a speech signal of the type generated by synthesis from voiced harmonics, the method comprising the steps of: receiving a signal containing information on a plurality of voiced harmonics, including information on first and second groups of said voiced harmonics; generating said first group of voiced harmonics using a time domain synthesis method; generating said second group of voiced harmonics using a frequency domain synthesis method; and combining said generated first and second groups of voiced harmonics to produce said voiced portion of a speech signal.
Claim 2
Independent Claim
94 words
A method for generating the voiced portion of a speech signal of the type generated by synthesis from voiced harmonics, the method comprising the steps of: receiving a signal containing information on a plurality of voiced harmonics, including information on first and second groups of said voiced harmonics; generating said first group of voiced harmonics using a time domain synthesis method; generating said second group of voiced harmonics using a frequency domain synthesis method; and combining said generated first and second groups of voiced harmonics to produce said voiced portion of a speech signal.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said first group comprises low-frequency harmonics.
Claim 4
Dependent Claim
14 words
The method of claim 1 or 2 wherein said second group comprises high-frequency harmonics.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein said time domain synthesis is performed by generating a low-order piecewise phase polynomial.
Claim 6
Dependent Claim
78 words
The method of claim 3 wherein said frequency domain synthesis is performed using the method comprising the steps of: linearly frequency scaling said information on said voiced harmonics according to the mapping ω 0 →2π/L, where L is some small integer, to generate frequency-scaled harmonics; performing an L-point Inverse Discrete Fourier Transform (DFT) to simultaneously transform said frequency scaled harmonics into the time domain; and performing interpolation and time scaling to generate said second group of voiced harmonics.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein said time domain synthesis is performed by generating a low-order piecewise phase polynomial.
Claim 8
Independent Claim
108 words
A method for generating the voiced portion of a speech signal of the type generated by synthesis from voiced harmonics, the method comprising the steps of: receiving a signal containing information on a plurality of voiced harmonics; linearly frequency scaling said information on said voiced harmonics according to the mapping ω 0 →2π/L, where L is some small integer, to generate frequency-scaled harmonics; performing an L-point Inverse Discrete Fourier Transform (DFT) to simultaneously transform said frequency scaled harmonics into the time domain; performing interpolation and time scaling to generate said plurality of voiced harmonics; and combining said voiced harmonics to produce said voiced portion of a speech signal.
Claim 9
Independent Claim
108 words
A method for generating the voiced portion of a speech signal of the type generated by synthesis from voiced harmonics, the method comprising the steps of: receiving a signal containing information on a plurality of voiced harmonics; linearly frequency scaling said information on said voiced harmonics according to the mapping ω 0 →2π/L, where L is some small integer, to generate frequency-scaled harmonics; performing an L-point Inverse Discrete Fourier Transform (DFT) to simultaneously transform said frequency scaled harmonics into the time domain; performing interpolation and time scaling to generate said plurality of voiced harmonics; and combining said voiced harmonics to produce said voiced portion of a speech signal.
Claim 10
Dependent Claim
24 words
The method of claim 5 or 7 wherein said DFT is computed with a Fast Fourier Transform, and L is a highly composite number.
Claim 11
Dependent Claim
15 words
The method of claim 5 or 7 wherein said interpolation is performed with linear interpolation.