초록 ▼

A system that performs analysis and comparison of audio data files based upon the content of the data files is presented. The analysis of the audio data produces a set of numeric values (a feature vector) that can be used to classify and rank the similarity between individual audio files typically s

A system that performs analysis and comparison of audio data files based upon the content of the data files is presented. The analysis of the audio data produces a set of numeric values (a feature vector) that can be used to classify and rank the similarity between individual audio files typically stored in a multimedia database or on the World Wide Web. The analysis also facilitates the description of user-defined classes of audio files, based on an analysis of a set of audio files that are members of a user-defined class. The system can find sounds within a longer sound, allowing an audio recording to be automatically segmented into a series of shorter audio segments.

대표청구항 ▼

[ Having thus described our invention, what we claim as new, and desire to secure by Letters Patent is:] [1.] A method for analyzing sound files for one or more of storing, comparing, and retrieving audio data, comprising the steps of:(a) measuring a plurality of acoustical features of a sound file

[ Having thus described our invention, what we claim as new, and desire to secure by Letters Patent is:] [1.] A method for analyzing sound files for one or more of storing, comparing, and retrieving audio data, comprising the steps of:(a) measuring a plurality of acoustical features of a sound file chosen from the group consisting of at least one of loudness, pitch, brightness, bandwidth, and MFCC coefficients thereof;(b) computing measurements chosen from the group consisting of mean, standard deviation, autocorrelation and first derivative thereof, of the acoustical features of the audio files, forming a vector of the feature and measurements data, and storing the computed measurements and vector in a feature file with a linkage to the sound file; and(c) grouping the feature files based on at least one of (i) similar measurements for the feature files, and (ii) distance between the vector for a sound file and a vector for a reference, to facilitate rapid classification, storage, and/or retrieval of sound files based on a predefined search criteria.