We have observed the zero-crossing steps in a surface junction of a mesa structure micro-fabricated on the surface of a Bi2Sr2CaCu2O8+δ single crystal. With the application of microwave of frequencies 76 and 94 GHz, the currentvoltage characteristics show clear voltage steps satisfying the ac Josephson relation. Increasing the microwave power, the heights of the steps show the Bessel-function b...

An audio descriptor describes the information of an audio signal in a compact and precise representation. There are various standards available to extract the audio information in various ways to be used for particular applications such as, speaker recognition, musical instrument identification, singer identification, multimedia database indexing, genre detection and so on. There are various au...

The problem of unsupervised audio classification continuous to be a challenging research problem which significantly impacts ASR and Spoken Document Retrieval (SDR) performance. This paper addresses novel advances in audio classification for speech recognition. A new algorithm is proposed for audio classification, which is based on Weighted GMM Network (WGN). Two new high-level features: VSF (V...

Gender identification application of Music Information Retrieval (MIR) research requires that the audio features that are extracted from the sound files should be sufficiently strong to be able to correctly classify the singer into male or a female. In literature, a lot of such applications are developed for speaker’s gender identification. Unfortunately, these applications cannot be applied fo...