Patent ID: 7912565
Filing Date: 2011-03-22
Classification: G11B

Abstract:
1. A method for creating or accessing a menu for audio content stored in a storage means within a portable audio playback device without a display, the content consisting of audio tracks, and the menu containing representations of said audio tracks, wherein the portable audio playback device comprises a storage with stored audio tracks being clustered in a plurality of clusters and a navigation system having not more than three buttons, or one button with three button functions, wherein one button is for ‘Switch to a Near Cluster’, one button is for ‘Switch to a Distant Cluster’, and one button is for ‘Switch to another track from the Current Cluster’, the method comprising classifying the audio tracks into groups or clusters, wherein said classification is performed according to characteristic parameters of said audio tracks, wherein said characteristic parameters comprise physical features, perceptual features, and psychological features, wherein physical features comprise one or more of spectral centroid, short-time energy, or short-time average zero-crossing, and wherein perceptual features comprise one or more of rhythm and tonality; detecting addition of a new audio track; determining characteristic parameters of the new audio track; determining that dissimilarity between the newly added track and existing clusters, according to said characteristic parameters used for classification, reaches at least a defined minimum level; upon said determining, automatically creating a new, second cluster; assigning the new audio track to said new, second cluster; upon said creating the second cluster, classifying one or more further audio tracks of said audio tracks into the second cluster; selecting automatically a first audio track as being a representative for the second cluster, wherein the medoid of the second cluster is selected; automatically generating a reproducible audio extract from said first audio track; and associating said audio extract as representative of the second cluster to a menu list.