Headphones with feedback Active Noise Control (ANC) have some advantages over feedforward applications [1], but suffer from the risk of instabilities. A block diagram of a typical digital feedback ANC headphone (compare [1], [2]) is shown in Fig. 1. The performance and stability of this system depends on the modelling accuracy of the secondary path (i.e. the transfer function from the loudspeak...

Several approaches have been introduced in literature for active noise control (ANC) systems. Since Filtered-x-Least Mean Square (FxLMS) algorithm appears to be the best choice as a controller filter. Researchers tend to improve performance of ANC systems by enhancing and modifying this algorithm. This paper proposes a new version of FxLMS algorithm. In many ANC applications an online secondary...

Mobile ad-hoc network is an infrastructure less network that is consisting of mobile nodes which communicate with each other via wireless links. This network is self-configuring, decentralized. In MANET’s all participating nodes act as router and these nodes are free to move randomly. In MANET, transmission failure occurs due to several reasons, such as node mobility, energy deficiency. In mult...

We propose an adaptive flow-level multipath routing-based traffic engineering solution for an IP backbone network carrying TCP/IP traffic. Incoming TCP flows are switched between two explicitly routed paths, namely the primary and secondary paths, for resilience and potential goodput improvement at the TCP layer. In the proposed architecture, primary paths receive a preferential treatment over ...

This paper presents the development and DSP implementation of a stable ANC feedback system with online secondary path modelling, using the Normalized Filtered-X Least Mean Square with Noise Addition algorithm (NFXLMS-NA), for acoustic noise cancellation. In this paper, the feedforward and the feedback ANC systems are described briefly; the basic of the FXLMS algorithm and its structure is discu...

We consider weighted path lengths to the extremal leaves in a random binary search tree. When linearly scaled, the weighted path length to the minimal label has Dickman’s infinitely divisible distribution as a limit. By contrast, the weighted path length to the maximal label needs to be centered and scaled to converge to a standard normal variate in distribution. The exercise shows that path le...

We investigated the organizational implications of the relationship between the pro-social behavior of generativity and an aging workforce under assumptions of increasing mortality awareness. The study involved secondary analysis of data from an existing nationally representative random-digit-dial sample of non-institutionalized English-speaking adults, aged 25 to 74. The results provided empir...