A hands-free communications unit employs a downlink peak power memory element ( , FIG. ), a downlink voice activity detector ( ), and an uplink voice activity detector ( ). The downlink voice activity detector ( ) evaluates the incoming signal to determine if the signal includes voice. In a similar manner, the uplink voice activity detector ( ) determines if an outgoing signal includes voice. In the event that the incoming signal includes voice and the energy of the outgoing signal exceeds a threshold calculated from the peak power of the incoming signal, the uplink voice activity detector ( ) indicates that a double-talk condition exists ( , FIG. ). In the event that the incoming signal does not include voice, the uplink voice activity detector ( ) compares the uplink signal to a voice threshold above a noise floor to determine if the outgoing signal includes voice.
Voice Decoder And Method For Detecting Channel Errors Using Spectral Energy Evolution
A voice decoder detects channel errors and loss of cryptographic synchronization using the change in spectral energy between sequential frames. The change in energy between frames is determined between corresponding LSPs of said successive frames and summed together. A running average of the change in energy for a predetermined number of frames is maintained. Current voice frames are eliminated based on the difference between the change in energy associated with the current frame and the running average. Accordingly, offensive audio associated with such channel errors or cryptographic synchronization loss is eliminated.
Method And Apparatus For Setting A Step Size For An Adaptive Filter Coefficient Of An Echo Canceller
The step sizes for tap positions of an adaptive filter ( ) in an echo canceller ( ) for canceling an echo signal are individually selected based upon a profile of the echo environment. A training signal ( ) is injected into the echo canceller and to the echo path during a training interval, or period. The adaptive filter profiles the echo path during the training interval. Respective step sizes [k] for the tap positions are generated as a function of the echo profile so generated.
Full-Duplex Hands-Free Transparency Circuit And Method Therefor
A bi-directional hands-free communication device includes a microphone for transmitting a signal along a transmit path and a speaker receiving a signal transmitted along a receive path and outputting a corresponding output signal. An echo canceller, positioned in the transmit path and the receive path, cancels echo signals induced by the microphone from the speaker and outputs a corresponding cancelled signal along the transmit path, and a transparency circuit distributes state-dependent additional loss derived from the noise floor margin to the transmit path and the receive path to reduce residual echo signals output from the echo canceller. The transparency circuit measures a noise floor and inserts an artificial noise signal to the transmit path, and optionally to the receive path, at a predetermined level in relation to the measured noise floor, and dynamically adjusts the speaker to compensate for changing environmental conditions by dividing a range of an expected ambient noise power into adjacent consecutive bins, and controlling a volume of the speaker responsive to ambient noise changes only when measured noise power moves into an adjacent bin.
Speech Recognition Using Polynomial Expansion And Hidden Markov Models
David L. Barron - Scottsdale AZ, US William Chunhung Yip - Phoenix AZ, US
Assignee:
Freescale Semiconductor, Inc. - Austin TX
International Classification:
G10L015/14
US Classification:
704256, 704243, 704242, 704254, 704231
Abstract:
A speech recognition system () having a sampler block () and a feature extractor block () for extracting time domain and spectral domain parameters from a spoken input speech into a feature vector. A polynomial expansion block () generates polynomial coefficients from the feature vector. A correlator block (), a sequence vector block (), an HMM table () and a Viterbi block () perform the actual speech recognition based on the speech units stored in a speech unit table () and the HMM word models stored in the HMM table (). The HMM word model that produces the highest probability is determined to be the word that was spoken.
David L. Barron - Scottsdale AZ, US William C. Yip - Phoenix AZ, US Sean S. You - Tempe AZ, US
Assignee:
Freescale Semiconductor, Inc. - Austin TX
International Classification:
H04B 3/23
US Classification:
37940607, 37940608
Abstract:
An echo canceling system receives and transmits audio signals between a far end and a near end. During single talk, which is when only one end is originating audio, the path back to the originator is impeded by echo cancellation and attenuation. When there is double talk, which is when both ends are originating audio, the attenuation is removed, or at least significantly reduced. This is achieved by using ERLE, which itself is a known signal used for other purposes in an echo cancellation system, to provide information as to when double talking is occurring. This allows for stopping the attenuation for the double talk situation, which is the desired result.
Automatic Gain Control For An Adaptive Finite Impulse Response And Method Therefore
David L. Barron - Scottsdale AZ, US William C. Yip - Phoenix AZ, US Sean S. You - Tempe AZ, US
Assignee:
Freescale Semiconductor, Inc. - Austin TX
International Classification:
H04B 3/23
US Classification:
37940608, 37939003
Abstract:
Methods and apparatus are provided for an echo cancellation system. The echo cancellation system comprises an automatic gain control (AGC), a first scalar, a second scalar, a signal summing stage, and an adaptive filter. The AGC is responsive to a first signal in a reference path and a second signal in a near end path. The signal summing stage is between the first and second scalar in the near end path and the first and second scalars are responsive to the AGC. The adaptive filter is responsive to the first signal and provides a third signal to the signal summing stage that corresponds to an echo signal and is subtracted from a signal in the near end path. The second scalar has a scale rate that is the inverse of the scale rate of the first scalar such that unity scaling occurs on the near end path.
Multi-Channel Echo Canceler And Method Using Convolution Of Two Training Signals
William Chunhung Yip - Scottsdale AZ Thomas Nall - Crystal Lake IL Thomas Gerard Callaghan - Phoenix AZ
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04M 100
US Classification:
379410
Abstract:
A two-wire line and a four-wire line telephone system interface with each other through a hybrid (12). After a connection between the two and four-wire line systems is made, an echo canceler (10) provides training signals to the hybrid on the transmit path an generates echo cancellation signals on the receive path. An adaptive filter (16) is employed to provide the proper echo cancellation signals, while a controller (22) provides filter coefficients based on an error signal. The training signals include the convolution of an impulse function with a sin(x)/x function. Once the filter coefficients are determined for the particular call, the transmit path of the four-wire line system is switched in and voice data between the two systems my commence.
Name / Title
Company / Classification
Phones & Addresses
Mr. William Y. Yip Partner
Reliable Auto Repair LLC Auto Repair - Mobile
882 Kawaiahao Street, #B, Honolulu, HI 96813 8085938757
William Yip Owner
Eastern Group USA Inc Local Passenger Transportation
3860 13Th St, Long Island City, NY 11101 Website: citicar.com
William Yip President
Iswapuswap.com Title Abstract Offices
20 Confucius Plaza Apt# 20-A, New York, NY 10002 Website: iswapuswap.com
William Yip
MISS NEW YORK CHINESE BEAUTY PAGEANT INC
PO Box 130408, New York, NY 10013 132-61 41 Rd STE 001, Flushing, NY 11355 3143 Morgan Dr, Wantagh, NY 11793
William C Yip Vice President
PSI PARTNERS INC
New York, NY 10292
William Yip
REGENT TRANSPORTATION CORP
35-15 37 Ave, Long Island City, NY 11101 Att: William Yip 35-15 37 Ave, Long Island City, NY 11101
William Yip
NEW WORLD ENTERPRISES INC
104 Harrison Ave, Jersey City, NJ 07304 Leung Sing Yip 3143 Morgan Dr, Wantagh, NY 11793
Honeywell Jun 2005 - Jul 2015
Software Engineer
J.crew Jun 2005 - Jul 2015
Retail Technology Applications Development
Education:
Stevens Institute of Technology 2006 - 2007
Masters, Master of Engineering, Management, Engineering
Stony Brook University 2000 - 2005
Bachelor of Engineering, Bachelors, Computer Engineering
Citi 2014 - 2018
Business Controls
Deloitte Sep 2015 - Jan 2017
Audit Associate
Education:
Alliance Manchester Business School 2012 - 2015
Bachelors, Bachelor of Science, Accounting
Bellerbys College 2011 - 2012
Indiana University, Bloomington May 1995
Master of Business Administration, Masters
Indiana University 1995
Indiana University Bloomington 1993 - 1995
University of Washington Jun 1988
Bachelors, Bachelor of Arts
University of Washington 1988
University of Washington 1980 - 1984
Bachelors, Marketing, Finance
Cleveland High School
Skills:
Administrative Assistance Sales Performance Supplies Financial Data Units Expenses Leases Vendors Sales Software Updates Trend Analysis Cost Market Research Seattle Competitive Analysis Adjustments Finance Main Street Business Administration Savings Monthly Close Process Real Estate Legal Cantonese Travel Trend Management Revenue Design Insurance Planning Airlines Tempe Myob Maintenance and Repair Statistics Metrics Allocations Data Mining Routing Leadership Powerpoint Accounting Paperless Methodology Eviews Financials Justification Year End Guidance Forecasting Strategic Initiatives Telecommunications Overtime Engineering Reports Asset Allocation Flat Patterning Defect Hyperion Microsoft Office Budgeting Microsoft Excel Deloitte Policy Scheduling Annual Planning Research Service Providers Reporting Shares Capital Microsoft Controller Analysis Indiana Financial Systems Sap Economics Yahoo Corporate Finance Space Data Analysis Chinese Schedules Communication Lease Negotiations Modeling Advertising Erp Strategic Planning Westlake Operations Macro Oracle Erp Repository Cost Transparency Checks Time Management Critical Thinking Mining Essbase Project Planning Gaap Contractual Agreements Cost Control Month End Close Dashboard Interpreting Standardization Presentations Spss Pricing Cost Reduction Strategies Internal Audit Trusted Business Advisor Code Efficiencies Software Contracts Google Groups Executive Management Portfolio Decks Headcount New York Spreadsheets Alternate Process Improvement Software Oracle India Internal Controls Interest Rates Financial Analysis Invoicing Budgets Financial Transactions Airplane Cost Benefit Conceptual Modeling Meetings Templates Mandarin Financial Metrics Financial Results
T. Rowe Price
Software Engineering Manager and Lead
Aqr Capital Management
Team Lead - Trading Development
Aqr Capital Management Sep 2012 - Jul 2015
Associate
Goldman Sachs May 2010 - Sep 2012
Senior Developer
Ubs Jul 2007 - May 2010
Software Developer
Skills:
Java Fixed Income Software Development Multithreading Computer Science Electronic Trading Sql Eclipse Unix Fixed Income Electronic Trading Derivatives Trading Systems Equities Sdlc Trading
Interests:
Exercise Sweepstakes Home Improvement Reading Gourmet Cooking Sports Home Decoration Photograph Cooking Electronics Outdoors Crafts Music Family Values Movies Christianity Kids Automobiles Travel Investing
S&P Global
People Analytics
S&P Global Market Intelligence Mar 2016 - May 2017
Data and Quantitative Analytics
Jpmorgan Chase & Co. Aug 2013 - Mar 2016
Data Analytics
Safe Horizon Mar 2011 - Mar 2012
Grant Accountant
Janney Montgomery Scott Llc Aug 1, 2009 - Feb 1, 2010
Financial Consultant's Assistant
Education:
Baruch College May 2014
Master of Science, Masters
Baruch College 2012 - 2014
Masters, Statistics
Stony Brook University 2006 - 2010
Bachelors, Bachelor of Science, Business Management, Accounting, Finance
Skills:
Microsoft Excel Finance Microsoft Office Financial Analysis Account Reconciliation Data Analysis Sas Analysis Risk Management Budgets Accounting Fundraising Accounts Receivable Customer Service Mandarin Financial Reporting Spss Powerpoint Microsoft Word Alm Business Objects Business Analysis Sql Databases Program Management Non Profits Outlook Vba Anova Regression Analysis Vlookup Access R Internal Controls Operational Risk
Interests:
Economic Empowerment Civil Rights and Social Action Politics Education Human Rights
Languages:
Mandarin English
Certifications:
License E9Qp47Zu9W License 5Y6Aujsgd2 License Wrjz3Mkyva License 5Qe3Fnnwy4 License Zzuyvq6Ddh License 9Nspwx8Veg License Rzfdl3Nks3 The Data Scientist’s Toolbox R Programming Exploratory Data Analysis Getting and Cleaning Data Reproducible Research Statistical Inference Regression Models Coursera Verified Certificates, License E9Qp47Zu9W Coursera Verified Certificates, License 5Y6Aujsgd2 Coursera Verified Certificates, License Wrjz3Mkyva Coursera Verified Certificates, License 5Qe3Fnnwy4 Coursera Verified Certificates, License Zzuyvq6Ddh Coursera Verified Certificates, License 9Nspwx8Veg Coursera Verified Certificates, License Rzfdl3Nks3
AQR Capital Management since Oct 2012
Associate
Goldman Sachs May 2010 - Oct 2012
Senior Developer
UBS Investment Bank Jul 2007 - May 2010
Software Developer
IBM Global Services Jul 2005 - Jul 2007
IT Consultant/Developer
Skills:
Java Software Development Computer Science Electronic Trading SQL Fixed-Income Electronic Trading Passed CFA level 2 exam Eclipse
Googleplus
William Yip
Work:
Hewlett-Packard
Tagline:
Homeboy
William Yip
Education:
State University of New York at Stony Brook - Computer engineering
William Yip
William Yip
William Yip
William Yip
William Yip
William Yip
Youtube
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2011 MNYCP Galaxy Macau.
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