PATENT CLAIM ANALYSIS

Application Number: 15745307
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["704", "258000"]

Abstract:
This invention discloses a speech analysis/synthesis method and a simplified form of such a method. Based on a harmonic model, the present method decomposes the parameters of the harmonic model into glottal source characteristics and vocal tract characteristics in its analysis stage and recombines the glottal source and vocal tract characteristics into harmonic model parameters in its synthesis stage.

Claim (Index 3):
A speech synthesis method based on a harmonic model, the synthesis method comprising:\n a) recombining decomposed glottal source and vocal tract characteristics, converting the glottal source and vocal tract characteristics into parameters of the harmonic model, the glottal source characteristics comprising parameters of a glottal flow model and phase difference corresponding to each harmonic, computing a vocal tract phase response from a vocal tract magnitude response using homomorphic filtering based on minimum-phase assumption; b) from the glottal flow model parameters, computing a frequency response of the glottal flow model comprising a magnitude response and a model-derived phase response of the glottal flow model; c) computing a sum of the model-derived phase response of the glottal flow model and a harmonic phase difference vector, obtaining a phase vector of the glottal source harmonics; d) computing a product of the vocal tract magnitude response and the vocal tract magnitude response at the frequency of each harmonic, obtaining the amplitude vector of speech harmonics, computing a sum of the phase vector of glottal source harmonics and the vocal tract phase response, obtaining the phase vector of speech harmonics; and e) generating a speech signal from a fundamental frequency and the amplitude and phase vectors of the speech harmonics.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 1.82353
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12061645', '13603226', '09475390', '12447519', '13017458']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2503243094751684
- 35 USC 102 Novelty (BERT): 0.4998398670152105
- Combined Prediction Score: 0.2752758652291726
- Mean Citation Score: 244.04972400000003
- Max Citation Score: 262.1518
- Similarity Product: 209.66014442622657

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test