Public-address system has been widely used in many applications to amplify speech and music signals. In such environments, an acoustic feedback from a loudspeaker to a microphone usually exists and it may causes howling which explosively increases a certain frequency amplitude. The howling is a persistent and an annoying problem in many acoustic enviroments. To solve this problem, we have previ...

Double-talk (DT)-robust acoustic echo cancellation (AEC) and acoustic feedback cancellation (AFC) are needed in speech communication systems, e.g., in hands-free communication systems and hearing aids. In this paper, we derive a practical and computationally efficient algorithm based on the frequency-domain adaptive filter prediction error method using row operations (FDAF-PEM-AFROW) for DT-rob...

Digital communications through underwater acoustic (UWA) channels differ from those in other media, such as radio channels, due to the high temporal and spatial variability of the acoustic channel which make the available bandwidth of the channel limited and dependent on both range and frequency. In order to overcome disadvantage factors and maximize performance to conduct real-time information...

BioSonics is an interactive art installation that explores the transformation of human interaction into spatial and temporal patterns by a dynamical and self-organized system. It both looks at aesthetic qualities of pattern formation processes and explores means of intuitive interaction with complex systems. In BioSonics, users interact with the growth processes of an organism. These processes ...

Bibliography 184 viii Contents 1 1 Introduction Linear adaptive filtering plays an important role in statistical signal processing and respective theoretical and practical results are well established [23]. In practice, however, nonlinear adaptive filtering often becomes desirable if the considered systems exhibit non-linear behaviour. Acoustic echo cancellation represents an important example ...

Light emission from CaZnOS:Nd3+ by high-intensity ultrasound excitation is demonstrated. Acoustic power and duty ratio enable simultaneous control of the degree (local) thermo-acoustic heating in isothermal or nonisothermal conditions. The Nd-related photoemission provides direct thermometric feedback at an absolute sensitivity on order 10−4 K−1, within physiological temperature range. From ind...

Abstract A haptic device provides users with physical feedback to enhance their experience in virtual reality (VR). We developed a multimodal suit, called as Pneumatic and Acoustic (PA) which exhibits high-resolution feedback, applies high pressure realistic vibration user. The PA suit artificially simulates the sensation of brief strong collisions such impact an explosion, ball, or fist. pneum...

This paper deals with the effects of integrated vibrotactile feedback on the“feel”of a digital musical instrument. Building on previous work developing a DMI with integrated vibrotactile feedback actuators, we discuss how to produce instrument-like vibrations, compare these simulated vibrations with those produced by an acoustic instrument and examine how the integration of this feedback effect...

Robots interacting with humans need to understand actions and make use of language in social interactions. Research on infant development has shown that language helps the learner to structure visual observations of action. This acoustic information typically in the form of narration overlaps with action sequences and provides infants with a bottom-up guide to find structure within them. This c...

In this paper a hearing aid concept working in subbands is presented. Consideration is given to the compensator for recruitment of loudness and the acoustic feedback cancellation. In addition, a step-size control for fast tracking and a constant error level with non-stationary input signals is presented. The feedback canceler is adapted to the feedback path in the transform domain using a power...