Patents by Inventor Xiaojie Wu
Xiaojie Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11727816Abstract: A method of providing an indication identifying a flight as including or not including a flight path deviation, the method includes receiving flight data associated with a flight, the flight data comprising a plurality of coordinates indicating a location of an aircraft at a plurality of times during the flight. The method also includes classifying a plurality of time intervals of the flight by applying a convolutional neural network algorithm to subsets of the plurality coordinates to determine that the time interval includes or does not include at least one flight path deviation. The method also includes identifying the flight as including at least one flight path deviation if at least one of the time intervals is classified as including the at least one flight path deviation and providing an indication identifying the flight as including at least one flight path deviation to a second computing system in response to identifying the flight as including at least one flight path deviation.Type: GrantFiled: September 4, 2020Date of Patent: August 15, 2023Assignee: GE Aviation Systems LLCInventors: Xiang Gu, Xiaojie Wu, Shangyun Lv
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Patent number: 11715446Abstract: A music beat point detection method includes: performing a frame processing on a music signal to obtain a frame signal; obtaining a power spectrum of the frame signal; performing sub-band decomposition on the power spectrum, and decomposing the power spectrum into at least two sub-bands; performing a time-frequency domain joint filtering on a signal of each sub-band according to a beat type corresponding to each sub-band; obtaining a to-be-confirmed beat point from the frame signal of the music signal according to a result of the time-frequency domain joint filtering; and obtaining a beat point of the music signal according to a power value of the to-be-confirmed beat point.Type: GrantFiled: December 4, 2018Date of Patent: August 1, 2023Assignee: BIGO TECHNOLOGY PTE, LTD.Inventor: Xiaojie Wu
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Publication number: 20220165239Abstract: A method for detecting a melody of an audio signal, including: dividing the audio signal into a plurality of audio segments based on a beat, detecting a pitch frequency of each frame of audio sub-signal in each of the audio segments, and estimating a pitch value of each of the audio segments based on the pitch frequency; determining a pitch name corresponding to each of the audio segments based on a frequency range of the pitch value; acquiring a musical scale of the audio signal by estimating a tonality of the audio signal based on the pitch name of each of the audio segments; and determining a melody of the audio signal based on a frequency interval of the pitch value of each of the audio segments in the musical scale.Type: ApplicationFiled: June 27, 2019Publication date: May 26, 2022Inventor: Xiaojie WU
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Publication number: 20220076583Abstract: A method of providing an indication identifying a flight as including or not including a flight path deviation, the method includes receiving flight data associated with a flight, the flight data comprising a plurality of coordinates indicating a location of an aircraft at a plurality of times during the flight. The method also includes classifying a plurality of time intervals of the flight by applying a convolutional neural network algorithm to subsets of the plurality coordinates to determine that the time interval includes or does not include at least one flight path deviation. The method also includes identifying the flight as including at least one flight path deviation if at least one of the time intervals is classified as including the at least one flight path deviation and providing an indication identifying the flight as including at least one flight path deviation to a second computing system in response to identifying the flight as including at least one flight path deviation.Type: ApplicationFiled: September 4, 2020Publication date: March 10, 2022Applicant: GE Aviation Systems LLCInventors: Xiang Gu, Xiaojie Wu, Shangyun Lv
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Publication number: 20220051685Abstract: A method for transforming an audio signal comprises obtaining a plurality of segmental original frequency-domain signal segments and a plurality of segmental target frequency-domain signal segments by segmenting and performing a Fourier transform on an original audio signal and an initial target audio signal obtained by pitch shifting on the original audio signal; obtaining a plurality of original formant envelopes by respectively filtering the plurality of segmental original frequency-domain signal segments according to a plurality of original segment window functions, and obtaining a plurality of target formant envelopes by respectively filtering the plurality of segmental target frequency-domain signal segments according to a plurality of target segment window functions; and determining a pitch-shifted audio signal based on the plurality of segmental target frequency-domain signal segments, the plurality of original formant envelopes, and the plurality of target formant envelopes.Type: ApplicationFiled: November 29, 2019Publication date: February 17, 2022Inventor: Xiaojie WU
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Publication number: 20200357369Abstract: A music beat point detection method includes: performing a frame processing on a music signal to obtain a frame signal; obtaining a power spectrum of the frame signal; performing sub-band decomposition on the power spectrum, and decomposing the power spectrum into at least two sub-bands; performing a time-frequency domain joint filtering on a signal of each sub-band according to a beat type corresponding to each sub-band; obtaining a to-be-confirmed beat point from the frame signal of the music signal according to a result of the time-frequency domain joint filtering; and obtaining a beat point of the music signal according to a power value of the to-be-confirmed beat point.Type: ApplicationFiled: December 4, 2018Publication date: November 12, 2020Inventor: Xiaojie WU
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Patent number: 10794731Abstract: A method for measuring a position of a device which is connected to a position sensor is provided. The method includes the steps of controlling an excitation unit to generate an excitation signal which excites the position sensor to provide a first feedback signal proportioned to the displacement of the device, controlling a sampling unit to sample the first feedback signal and obtain a plurality of first feedback samples, and calculating the position of the device based at least in part on the first feedback samples.Type: GrantFiled: March 23, 2015Date of Patent: October 6, 2020Assignee: Baker Hughes, a GE Company, LLCInventors: Xiaojie Wu, Liu Wei, Jiang Yemin
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Patent number: 9935796Abstract: The present disclosure relates to a superposed signal sampling apparatus, including: a signal receiving module, a signal extracting module, and a signal output module. The signal receiving module is used to receive a superposed signal. The signal extracting module is used to determine whether the received superposed signal is within a preset threshold range of a direct current signal; if the received superposed signal is within the threshold range, extract a previously received signal as a direct current signal to be output; and if the received superposed signal is beyond the threshold range, extract a currently received signal as a direct current signal to be output. The signal output module is used to integrate the direct current signal extracted by the signal extracting module, and then output the direct current signal. The present disclosure further relates to a superposed signal sampling method.Type: GrantFiled: February 13, 2015Date of Patent: April 3, 2018Assignee: General Electric CompanyInventors: Lifeng Wang, Xiaojie Wu, Xianhong Yang
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Patent number: 9787219Abstract: A modulation policy for a modular multi-level convertor, determining a switching state of each submodule by combining the current direction of each bridge arm and the capacitor voltage order of the submodules based on a carrier stacking method. The beneficial effects of the modulation policy are that: each phase only needs a modulation wave and N carriers, given N submodules of each upper bridge arm or lower bridge arm of the modular multi-level convertor; the modular multi-level convertor can output N+1 levels without carrier phase shift; N devoted submodules of each phase are guaranteed at any time; and the submodules' capacitor voltage balancing can be controlled without a closed-loop control policy. The modulation policy facilitates adjustment of the modular multi-level convertor voltage and power class, has unlimited number of levels, has a high precision control algorithm, is easy to realize in engineering and saves software and hardware resources.Type: GrantFiled: February 19, 2014Date of Patent: October 10, 2017Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Xiaojie Wu, Zheng Gong, Peng Dai, Gaige Liang, Yiwen Geng, Quanjun Guo, Juan Zhou, En Fang, Xia Zhao, Huaxia Dai, Xiao Zong, Guangsheng Liu
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Publication number: 20170153126Abstract: A method for measuring a position of a device which is connected to a position sensor is provided. The method includes the steps of controlling an excitation unit to generate an excitation signal which excites the position sensor to provide a first feedback signal proportioned to the displacement of the device, controlling a sampling unit to sample the first feedback signal and obtain a plurality of first feedback samples, and calculating the position of the device based at least in part on the first feedback samples.Type: ApplicationFiled: March 23, 2015Publication date: June 1, 2017Applicant: General Electric CompanyInventors: Xiaojie WU, Liu WEI, Jiang YEMIN
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Publication number: 20170078121Abstract: The present disclosure relates to a superposed signal sampling apparatus, including: a signal receiving module, a signal extracting module, and a signal output module. The signal receiving module is used to receive a superposed signal. The signal extracting module is used to determine whether the received superposed signal is within a preset threshold range of a direct current signal; if the received superposed signal is within the threshold range, extract a previously received signal as a direct current signal to be output; and if the received superposed signal is beyond the threshold range, extract a currently received signal as a direct current signal to be output. The signal output module is used to integrate the direct current signal extracted by the signal extracting module, and then output the direct current signal. The present disclosure further relates to a superposed signal sampling method.Type: ApplicationFiled: February 13, 2015Publication date: March 16, 2017Inventors: Lifeng Wang, Xiaojie Wu, Xianhong Yang
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Patent number: 9269369Abstract: The present invention relates to a method and device for dereverberation of single-channel speech.Type: GrantFiled: April 1, 2013Date of Patent: February 23, 2016Assignee: Goertek, Inc.Inventors: Shasha Lou, Xiaojie Wu, Bo Li
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Patent number: 9065896Abstract: Disclosed in the invention is a method and system for sampling rate mismatch correction of transmitting and receiving terminals, which can obtain a high-precision sampling rate mismatch in real time, carry out sampling rate correction on transmitting and receiving terminal signals, and send the transmitting terminal signal and the receiving terminal signal that have the same sampling rate after corrected to an echo cancellation system to carry out echo cancellation. The present invention can improve the quality of echo cancellation, simplify the computation and reduce the cost.Type: GrantFiled: May 30, 2013Date of Patent: June 23, 2015Assignee: Goertek, Inc.Inventors: Shasha Lou, Bo Li, Xiaojie Wu
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Publication number: 20150171771Abstract: A modulation policy for a modular multi-level convertor, determining a switching state of each submodule by combining the current direction of each bridge arm and the capacitor voltage order of the submodules based on a carrier stacking method.Type: ApplicationFiled: February 19, 2014Publication date: June 18, 2015Inventors: Xiaojie Wu, Zheng Gong, Peng Dai, Gaige Liang, Yiwen Geng, Quanjun Guo, Juan Zhou, En Fang, Xia Zhao, Huaxia Dai, Xiao Zong, Guangsheng Liu
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Publication number: 20150149160Abstract: The present invention relates to a method and device for dereverberation of single-channel speech.Type: ApplicationFiled: April 1, 2013Publication date: May 28, 2015Inventors: Shasha Lou, Xiaojie Wu, Bo Li
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Publication number: 20140233723Abstract: Disclosed in the invention is a method and system for sampling rate mismatch correction of transmitting and receiving terminals, which can obtain a high-precision sampling rate mismatch in real time, carry out sampling rate correction on transmitting and receiving terminal signals, and send the transmitting terminal signal and the receiving terminal signal that have the same sampling rate after corrected to an echo cancellation system to carry out echo cancellation. The present invention can improve the quality of echo cancellation, simplify the computation and reduce the cost.Type: ApplicationFiled: May 30, 2013Publication date: August 21, 2014Applicant: Goertek, IncInventors: Shasha Lou, Bo Li, Xiaojie Wu