A watermarking system based on amplitude modulation is proposed. Sinusoidal amplitude
modulations at relatively low modulation frequencies applied to neighboring subband …

Recently, a technique that uses quantization index modulation and amplitude expansion
has been proposed for reversible and robust audio watermarking. However, when applied to …

We propose a watermarking algorithm for stereo audio signals which embeds data using
delay values of the high-frequency channel signals. Since the stereo image perception of …

This paper proposes an audio watermarking method based on the singular-spectrum
analysis (SSA) incorporating with a convolutional neural network (CNN) for parameter …

Existing techniques for reversible hiding of data in audio signals are so fragile that no data
can be extracted from a modified stego audio signal. The present study proposes a …

A data hiding algorithm for stereo audio signals is proposed, which embeds data using the
polarity of the reverberations added to the high-frequency channels. The high-frequency …

2. Digital watermarking of stereo audio signals The spatial localization of sound sources in
HAS is known to depend on both amplitude and phase characteristics for low frequency, but …

This chapter proposes two data-hiding algorithms for stereo audio signals. The first
algorithm embeds data into a stereo audio signal by adding data-dependent mutual delays …

In this paper, the non-uniform discrete Fourier transform (NDFT) is utilized to randomly select
sampling points in frequency domain, which could make the embedding points private …

Esipuhe Tähän julkaisuluetteloon on koottu tiedot Oulun yliopistossa tehdyistä
opinnäytteistä ja henkilökunnan julkaisuista vuodelta 2005. Yhteisjulkaisut on mainittu vain …