4 accepted papers
The short-time Fourier transform (STFT) and the inverse short-time Fourier transform are often used in signal analysis, modification, and synthesis. In this work, we focus on the effect of overlapping STFT subbands in relation to signal modification and synthesis. We illustrate that the subband over…
Adaptive filters have been widely used for feedback cancellation in audio systems including hearing aids. However, the ability to cancel feedback in dynamic feedback situations is still a big challenge; the adaptive filters need to ensure a small enough steady-state error to facilitate sufficient am…
Audio applications often suffer from the acoustic feedback problem which leads to significant sound quality degradation and howling in the worst case. Many solutions exist to minimize the effect of feedback. However, it is not trivial to evaluate these solutions. In this work, we focus on intrusive…
Frequency shifting has been used for acoustic feedback control in audio reinforcement systems since the 1950s. It can be used as a stand-alone system and/or it can be combined with an acoustic feedback cancellation system using adaptive filters. A spectral shifting of the loudspeaker signal in an au…