An audio signal is a representation of sound. Audio signals have frequency range 20 to 20 kHz. Audio signals may be synthesized directly. A mixture refers to the physical combination of two or more substances on which the identities and are mixed in the form to separate out. An audio signal classification system should be able to categorize different audio input formats (speech, background nois...

In this paper, we try to improve the security of image transmission over IEEE 802.15.1 Bluetooth networks. We propose a new approach for audio watermarking using the singular value decomposition (SVD) mathematical technique. This approach is based on embedding the encrypted image in the singular values of the audio signal after transforming it into a 2D format. After watermark embedding, the au...

Audio coding is widely used in application such as digital broadcasting, Internet audio or music database to reduce the bit rate of high quality audio signal without comprising the perceptual quality. In this paper work high quality audio codec at low bit rate using wavelet transform and improvement in reconstructed wave using post filtering has been proposed. The major issues concerning the de...

There are plenty of audio information in ocean, whose audio feature often brings disturbance on the detection of ocean object, and some new methods are required to realize the object classification on audio frequency. Stochastic resonance (SR) can realize the detection of weak signal. However the most researches concentrate on single weak periodic signal, and less research on aperiodic audio si...

The aim is to get large Capacity embedding watermark in Audio & to improve strength of audio watermarking technique to intelligent attacks and simple signal exploitation attacks in existing digital Audio watermarking, this paper presented a large capacity digital audio watermarking using 24 bit true colour image used as watermark. The image is decomposed into R, G, B Components & Arnold transfo...