Scott A Levine

US Patent:

20100071013, Mar 18, 2010

Filed:

Nov 23, 2009

Appl. No.:

12/623647

Inventors:

Harmannus Vandermolen - Sunnyvale CA, US
Anthony Wiegering - Seattle WA, US
Michael Sommers - Leesburg VA, US
Scott J. Levine - Arlington VA, US
Alexander Franco - Herndon VA, US

Assignee:

AOL LLC - Dulles VA

International Classification:

H04N 7/173

US Classification:

725109

Abstract:

Instant messages sent by a viewer of a video while the video is perceivable to the viewer may be monitored. An event of interest occurring in the video may be identified based on the monitored instant messages. Metadata that describes the event of interest may be generated and assigned to the video. A request for video content associated with the video may be received from a user. An indexed collection of videos that includes the video may be searched for the requested video content. Based on the search, it may be determined that the video satisfies the user's request. The event of interest occurring in the video may be identified based on the metadata assigned to the video. User perception of a scene from the video that includes the event of interest may be enabled.

US Patent:

58481648, Dec 8, 1998

Filed:

Apr 30, 1996

Appl. No.:

8/655272

Inventors:

Scott Levine - Stanford CA

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA

International Classification:

H03G 300

US Classification:

381 61

Abstract:

An audio effects processing system and method performs audio effects processing on a subband-by-subband basis using less memory and computational resources than audio effects produced through post processing of a fullband audio signal. The input fullband audio signal is split into subbands and the compressed subbands may be stored in memory of the system as compressed audio subband data or may be generated by real time processing of a fullband audio signal. The system stores in memory a set of prototype subband effects filters, the set including echo, flange, chorus, and reverberation effects filters. A subband filter customization procedure allows a sound system designer to build customized versions of the prototype subband effects filters. One or more of the customized subband effects filters are applied to one or more of the subbands comprising the compressed audio subband data. The compressed audio subband data is then processed through a synthesis filter bank which decompresses and decodes the compressed audio subband data to produce a decompressed decoded audio output signal with the audio effects incorporated in it.

US Patent:

62666444, Jul 24, 2001

Filed:

Sep 26, 1998

Appl. No.:

9/161198

Inventors:

Scott Nathan Levine - Palo Alto CA

Assignee:

Liquid Audio, Inc. - Redwood City CA

International Classification:

G10L 2104

US Classification:

704503

Abstract:

An audio encoding system includes quantization, phase matching, compressed domain processing and other improvements enabling high fidelity, low bit rate encoding systems to be formed. In a preferred embodiment a novel transient detector is used to divide an audio source into transient, low frequency non-transient and high frequency non-transient regions. Low frequency non-transients are sinusoid modeled and the residual is low frequency noise modeled. Transients are transform coded and high frequency non-transients and transform coded residual is high frequency noise modeled. The preferred embodiment also includes novel sinusoid, transform coded and noise quantization, among other methods for providing high fidelity data reduction and for interfacing sinusoid modeling and transform coding. Compressed domain time compression and expansion are further achieved with no detrimental effect on transients.

US Patent:

58862765, Mar 23, 1999

Filed:

Jan 16, 1998

Appl. No.:

/007995

Inventors:

Scott N. Levine - Palo Alto CA
Tony S. Verma - Stanford CA

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA

International Classification:

G10H 112

US Classification:

84603

Abstract:

An audio signal analyzer and encoder is based on a model that considers audio signals to be composed of deterministic or sinusoidal components, transient components representing the onset of notes or other events in an audio signal, and stochastic components. Deterministic components are represented as a series of overlapping sinusoidal waveforms. To generate the deterministic components, the input signal is divided into a set of frequency bands by a multi-complementary filter bank. The frequency band signals are oversampled so as to suppress cross-band aliasing energy in each band. Each frequency band is analyzed and encoded as a set of spectral components using a windowing time frame whose length is inversely proportional to the frequency range in that band. Low frequency bands are encoded using longer time frames than higher frequency bands. Transient components are represented by parameters denoting sinusoidal shaped waveforms produced when the transient components are transformed into a real valued frequency domain waveform.