PATENT CLAIM ANALYSIS

Application Number: 15889775
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["704", "207000"]

Abstract:
An autocorrelation calculating part calculates autocorrelation Ro(i) from an input signal. A predictive coefficient calculating part performs linear predictive analysis using modified autocorrelation R′o(i) obtained by multiplying the autocorrelation Ro(i) by a coefficient wo(i). Here, it is assumed that a case where, for at least part of each order i, the coefficient wo(i) corresponding to each order i monotonically increases as a value having negative correlation with a fundamental frequency of an input signal in a current frame or a past frame increases and a case where the coefficient wo(i) monotonically decreases as a value having positive correlation with a pitch gain in a current frame or a past frame increases, are included.

Claim (Index 3):
A linear predictive analysis apparatus which obtains a coefficient which can be converted into a linear predictive coefficient corresponding to an input time series signal for each frame which is a predetermined time interval, the linear predictive analysis apparatus comprising:\n processing circuitry configured to\n calculate autocorrelation R o (i) between an input time series signal X o (n) of a current frame and an input time series signal X o (n\u2212i) i sample before the input time series signal X 0 (n) or an input time series signal X o (n+i) i sample after the input time series signal X o (n) for each of at least i=0, 1, . . . , P max ; and \n obtain a coefficient which can be converted into linear predictive coefficients from the first-order to the P max -order using modified autocorrelation R\u2032 o (i) obtained by multiplying the autocorrelation R o (i) by a coefficient for each corresponding i, \n wherein the processing circuitry further configured to acquire the coefficient from one coefficient table among coefficient tables t0, t1 and t2 using a period, an estimate value of the period, a quantization value of the period or a value having negative correlation with a fundamental frequency based on an input time series signal in the current frame or a past frame and a value having positive correlation with intensity of periodicity or a pitch gain assuming that a coefficient w t0 (i) is stored in the coefficient table t0, a coefficient w t1 (i) is stored in the coefficient table t1, and a coefficient w t2 (i) is stored in the coefficient table t2, \n for at least part of i other than i=0, w t0 (i)<w t1 (i)\u2264w t2 (i), for at least part of each i among other i other than i=0, w t0 (i)\u2264w t1 (i)<w t2 (i), and for the remaining each i other than i=0, w t0 (i)\u2264w t1 (i)\u2264w t2 (i), \n according to the period, the estimate value of the period, the quantization value of the period or the value having negative correlation with the fundamental frequency and the value having positive correlation with the intensity of periodicity or the pitch gain, (1) when the period is short and the pitch gain is large, a coefficient is acquired from the coefficient table t0 at the coefficient determining part, (9) when the period is long and the pitch gain is small, a coefficient is acquired from the coefficient table t2 at the coefficient determining part, (2) when the period is short and the pitch gain is medium, (3) when the period is short and the pitch gain is small, (4) when the period is medium and the pitch gain is large, (5) when the period is medium and the pitch gain is medium, (6) when the period is medium and the pitch gain is small, (7) when the period is long and the pitch gain is large, and (8) when the period is long and the pitch gain is medium, a coefficient is acquired from any of the coefficient tables t0, t1 and t2 by the processing circuitry, in at least one of (2), (3), (4), (5), (6), (7) and (8), a coefficient is acquired from the coefficient table t1 by the processing circuitry, and assuming that an identification number of a coefficient table tj k  from which a coefficient is acquired by the processing circuitry in the case of (k) where k=1, 2, . . . , 9 is j k , j 1 \u2264j 2 \u2264j 3 , j 4 \u2264j 5 \u2264j 6 , j 7 \u2264j 8 \u2264j 9 , j 1 \u2264j 4 \u2264j 7 , j 2 \u2264j 5 \u2264j 8 , and j 3 \u2264j 6 \u2264j 9 .

Metadata:
- Claim Count in Document: 9.0
- Percentile: 88.0
- Lexical Diversity: 2.0597
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15889748', '15889684', '15112318', '15112534', '14345167']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3241729994494183
- 35 USC 102 Novelty (BERT): 0.6115181642803437
- Combined Prediction Score: 0.3529075159325108
- Mean Citation Score: 402.397962
- Max Citation Score: 540.33484
- Similarity Product: 531.7537491462134

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