PATENT CLAIM ANALYSIS

Application Number: 15884945
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-08
Patent Classification: ["381", "098000"]

Abstract:
A virtual bass generating circuit used in a speaker is used to filter out a high frequency part of an audio signal to generate a low passed audio signal, generates an even and odd audio signals respectively having even and odd harmonics of the low passed audio signal according to the low passed audio signal, subtracts an amplified low passed audio signal from an addition of an amplified even audio signal and an amplified odd audio signal to generate a first calculated audio signal, filters out a low frequency part and a high frequency part of the first calculated audio signal to generate a band passed audio signal, and adds the band passed audio signal and the audio signal to generate a second calculated audio signal with enhanced even and odd harmonics of the audio signal.

Claim (Index 4):
The virtual bass generating circuit according to  claim 1 , wherein the harmonic generating circuit comprises:\n a full wave rectifier, electrically connected to the low pass filter, receiving the low passed audio signal to generate the even audio signal; a clipping circuit, electrically connected to the low pass filter, receiving the low passed audio signal to generate the odd audio signal a first amplifier, electrically connected to the low pass filter, amplifying the low passed audio signal to generate the amplified low passed audio signal; a second amplifier, electrically connected to the clipping circuit, amplifying the odd audio signal to generate the amplified odd audio signal; a third amplifier, electrically connected to the full wave rectifier, amplifying the even audio signal to generate the amplified even audio signal; a subtractor, electrically connected to the first and second amplifiers, subtracting the amplified low passed audio signal from the amplified odd audio signal; and a second adder, electrically connected to the subtractor and the third amplifier, adding the amplified even audio signal and a subtraction result of the amplified low passed audio signal and the amplified odd audio signal, so as to generate the first calculated audio signal.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 86.0
- Lexical Diversity: 3.0
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13652023', '14433983', '10030521', '13720725', '14359416']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7298787500772599
- 35 USC 102 Novelty (BERT): 0.4831486638346206
- Combined Prediction Score: 0.705205741452996
- Mean Citation Score: 224.863356
- Max Citation Score: 236.35855
- Similarity Product: 201.13132334728544

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