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The paper introduces two improvements in the feedforward active noise control system with online secondary path modeling developed by Akhtar, Abe, and Kawamata: (1) optimal variable step-size parameters are derived for the adaptation algorithms of the secondary path modeling filter and of the control filter and (2) a self-tuning power scheduling for the… (More)
The paper introduces a self-tuning power scheduling for the auxiliary noise of feedforward active noise control systems with online secondary path modeling. The proposed power scheduling is chosen so that in every operating condition a specific ratio between the powers at the error microphone of the auxiliary noise and of the residual noise is achieved.
The paper improves the feedforward active noise control system with online secondary path modeling developed by Akhtar, Abe, and Kawamata by deriving optimal variable step-size parameters for the adaptation algorithms of the secondary path modeling filter and of the control filter. It is shown that the adaptation algorithms equipped with the optimal… (More)
Usability evaluation of mobile application interfaces is continuously gaining importance, due to the spread of mobile devices in everyday life and to the varied nature of mobile applications. Unfortunately, usability is always a secondary aspect when developing interfaces, because of the effort it requires in terms of money and time. Introducing… (More)
This work documents the recent rise in popularity of messaging bots: chatterbot-like agents with simple, textual interfaces that allow users to access information, make use of services, or provide entertainment through online messaging platforms. Conversational interfaces have been often studied in their many facets, including natural language processing,… (More)