PATENT CLAIM ANALYSIS

Application Number: 15972295
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["381", "017000"]

Abstract:
The present technology relates to an acoustic signal processing device, an acoustic signal processing method, and a program capable of improving a feeling of localization of a sound image at a position deviated leftward or rightward from a median plane of a listener. A transaural processing unit performs a predetermined transaural process for an input signal by using a sound source opposite side HRTF and a sound source side HRTF to generate a first acoustic signal, and a second acoustic signal containing attenuated components in a first band which is the lowest band, and a second band which is the second lowest band in a range of a predetermined first frequency or higher frequencies, in bands of appearance of notches in the sound source opposite side HRTF. A subsidiary signal synthesis unit adds a first subsidiary signal constituted by a component in a predetermined band of the second acoustic signal to the first acoustic signal to generate a third acoustic signal. The present technology is applicable to an AV amplifier, for example.

Claim (Index 19):
An acoustic signal processing method including:\n a subsidiary signal synthesis step that adds a first subsidiary signal to a first input signal to generate a first synthesis signal, and adds a second subsidiary signal to a second input signal to generate a second synthesis signal, the first input signal corresponding to an acoustic signal for a first virtual sound source deviated leftward or rightward from a median plane of a predetermined listening position, the second input signal corresponding to an acoustic signal for a second virtual sound source deviated leftward or rightward from the median plane, the first subsidiary signal constituted by a component in a predetermined band of the second input signal, and the second subsidiary signal constituted by a component in the first input signal in the same band as the band of the first subsidiary signal; a first transaural processing step that performs a predetermined transaural process for the first synthesis signal by using a first head acoustic transmission function between the first virtual sound source and one of both ears of a listener located at the listening position, which ear is located on a side away from the first virtual sound source, and by using a second head acoustic transmission function between the first virtual sound source and the other of the both ears of the listener, which ear is located on a side close to the first virtual sound source, to generate a first acoustic signal, and a second acoustic signal containing attenuated components in a first band which is the lowest band, and a second band which is the second lowest band in a range of a predetermined first frequency or higher frequencies, in bands of appearance of notches each of which corresponds to a negative peak of an amplitude having a predetermined depth or larger in the first head acoustic transmission function; and a second transaural processing step that performs a predetermined transaural process for the second synthesis signal by using a third head acoustic transmission function between the second virtual sound source and one of the both ears of the listener, which ear is located away from the second virtual sound source, and by using a fourth head acoustic transmission function between the second virtual sound source and the other ear of the both ears of the listener, which ear is located close to the second virtual sound source, to generate a third acoustic signal, and a fourth acoustic signal containing attenuated components in a third band which is the lowest band, and a fourth band which is the second lowest band in a range of a predetermined second frequency or higher frequencies, in bands of appearance of the notches in the third head acoustic transmission function.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 93.0
- Lexical Diversity: 2.39474
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15305694', '16323893', '14351184', '11798478', '13500955']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7410882762662447
- 35 USC 102 Novelty (BERT): 0.6578958830305448
- Combined Prediction Score: 0.7327690369426748
- Mean Citation Score: 453.13957
- Max Citation Score: 648.01135
- Similarity Product: 599.5605626042783

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