PATENT CLAIM ANALYSIS

Application Number: 16309512
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-08
Patent Classification: ["381", "056000"]

Abstract:
A signal processing device includes a prior distribution storage that stores a prior distribution group that is a set of prior distributions representing representative spectral shapes of spectral bases of an acoustic event specified as a detection target, and a basis generation unit that, using as input a spectrogram for basis generation, generates an acoustic event basis group that is a set of the spectral bases of the acoustic event specified as a detection target. The basis generation unit performs sound source separation on the spectrogram for basis generation and thereby generates an acoustic event basis group, using respective prior distributions included in a prior distribution group as a constraint for spectral bases of a corresponding acoustic event.

Claim (Index 15):
The signal processing device according to  claim 14 , wherein\n the acoustic event basis group is a set of subsets each of which is a group into which two or more spectral bases are grouped with respect to each representative spectral shape of a sound constituting an acoustic event, the basis generation unit, using each prior distribution included in a prior distribution group as a constraint for spectral bases included in a group with respect to a corresponding representative spectral shape and, with respect to each group, using a sparse constraint for an activation group representing a set of activation levels of spectral bases included in the group, the sparse constraint, when updating a value of an activation, causing the value after update to be large if the value before update is large and causing the value after update to be small if the value before update is small, performs sound source separation on the spectrogram for basis generation and thereby generates the acoustic event basis group, and the sound source separation unit, in processing of factorizing the spectrogram of the acoustic signal for sound source separation into the first basis matrix representing the acoustic event basis group and a first activation matrix representing activation levels of respective spectral bases in the first basis matrix, factorizes the spectrogram of the acoustic signal for sound source separation by, with respect to each group, imposing a sparse constraint on an activation group representing a set of activation levels of spectral bases included in the group, the sparse constraint, when updating a value of an activation, causing the value after update to be large if the value before update is large and causing the value after update to be small if the value before update is small.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 98.0
- Lexical Diversity: 2.38462
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15759571', '14716289', '10799293', '14746262', '16323763']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.672505314772335
- 35 USC 102 Novelty (BERT): 0.5259575710933035
- Combined Prediction Score: 0.6578505404044319
- Mean Citation Score: 221.35049
- Max Citation Score: 320.35367
- Similarity Product: 251.9301614879

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test