PATENT CLAIM ANALYSIS

Application Number: 15954813
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["381", "066000"]

Abstract:
A device for acoustic echo cancellation includes a modulator, a speaker, a microphone, a demodulator, and an adaptive filter. The modulator duplicates a far-end signal to a frequency range that is higher than the far-end signal to be a first frequency-shifted signal and generates a modulated signal according to the far-end signal and the first frequency-shifted signal. The speaker generates a sound signal according to the modulated signal. The microphone generates a microphone signal according to a near-end signal and an echo signal. The echo signal is a convolution of the sound signal with a room impulse response. The demodulator extracts a demodulated signal and an echo-reference signal from the microphone signal. The adaptive filter generates a recovered signal to recover the near-end signal according to the demodulated signal and the echo-reference signal.

Claim (Index 14):
The method of  claim 12 , wherein the step of generating the modulated signal according to the far-end signal and the first frequency-shifted signal comprises:\n combining the up-sampled signal and the first frequency-shifted signal to generate the modulated signal.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 91.0
- Lexical Diversity: 2.88
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['12837658', '11262007', '14579416', '14797419', '11576915']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6661830788944282
- 35 USC 102 Novelty (BERT): 0.49898902503654
- Combined Prediction Score: 0.6494636735086394
- Mean Citation Score: 178.303034
- Max Citation Score: 186.56789
- Similarity Product: 123.298914749074

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