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 2):
A speech analysis method based on a harmonic model, the analysis method comprising:\n a) decomposing parameters of the harmonic model into a glottal source component and a vocal tract component, the glottal source component comprising an amplitude vector and a phase vector, performing harmonic analysis on an input speech signal, obtaining fundamental frequency, amplitude and phase vectors of the harmonics at each analysis instant; b) obtaining a vocal tract magnitude response, in the case where the glottal source magnitude response is unknown, defining the vocal tract magnitude response to be the same as the harmonic amplitude vector; in the case where the glottal source magnitude response is known, deviding the harmonic amplitude vector by the glottal source magnitude response to obtain the vocal tract magnitude response; c) computing the vocal tract phase response from the vocal tract magnitude response using homomorphic filtering based on the minimum-phase assumption; and d) computing a glottal source frequency response comprising the phase vectors of the glottal source, obtaining the phase vector of the glottal source by subtracting the vocal tract phase response from the harmonic phase vector.

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): 0.2503963559743047
- 35 USC 102 Novelty (BERT): 0.4993814175741095
- Combined Prediction Score: 0.2752948621342852
- Mean Citation Score: 244.04972400000003
- Max Citation Score: 262.1518
- Similarity Product: 211.06951448527568

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