Pinnacle Systems, Inc.

Christopher J Zamara

Ivan J Maltz

Guy W W McNally

Charmine S Tung

Methods and systems for detecting a fundamental beat frequency in a predetermined time interval of a music signal are disclosed. The frequency may be detected by processing a music signal with the discrete wavelet transform to obtain a set of coefficients. A subset of the coefficients may be processed to obtain a plurality of candidate beat frequencies contained in the corresponding portion of the music signal. Harmonic relationships between the candidate beat frequencies may be determined, and the fundamental beat frequency may then be determined based upon the determined harmonic relationships.

Method and apparatus for synchronizing audio and video components of multimedia presentations by identifying beats in a music signal

A process that allows precise control of the tape position in consumer videotape devices, such as camcorders, for the purpose of video editing. The process involves the use of a software algorithm within the central processing unit of a computer to locate a specific video frame with digitized video. The process first involves storing an initial set of calculated scene detection data, including luminance and change of luminance values for each video frame. Then, at the time of the video editing, a second set of scene detection data from the videotape is taken at a reference point, near the location of the desired frame. The second set of scene detection data is compared to the first set of scene detection data to determine whether there is any offset between the expected location of the frame, as shown in the first set of scene detection data, and the actual location of the desired frame, as shown in the second set of scene detection data. If there is any offset, the videotape can then be adjusted by the determined amount of offset to locate the desired frame.

Growing community of inventors

Gilroy, CA, United States of America

Christopher J Zamara