Time-frequency representations are important for the analysis of time series. We have developed an online timeseries analysis system and equipped it to reliably handle re-alignment in the time-frequency plane. The system can deal with issues like invalid regions in time-frequency representations and discontinuities in data transmissions, making it suitable for on-line processing in real-world s...

TAMPERE UNIVERSITY OF TECHNOLOGY Department of Information Technology Signal Processing Laboratory Peltonen, Vesa: Computational Auditory Scene Recognition Master of Science Thesis, 64 pages. Examiners: Prof. Jaakko Astola, M.Sc. Anssi Klapuri, Dr.Tech. Jyri Huopaniemi Financier: Nokia Research Center August 2001

This paper proposes that sound ontology should be used both as a common vocabulary for sound representation and as a common terminology for integrating various sound stream segregation systems. Since research on computational auditory scene analysis (CASA) focuses on recognizing and understanding various kinds of sounds, sound stream segregation which extracts each sound stream from a mixture o...

Traditionally, applications are developed with an implicit reliance on the stability of their execution environment and available resources, while little or no support is provided for the runtime adaptation of application behavior in case of any instability encountered. But such an approach proves futile for more dynamic environments, such as those encountered in self-organized mobile networks,...

[1] Observations of the column-averaged dry molar mixing ratio of CO2 above both Park Falls, Wisconsin and Kitt Peak, Arizona, together with partial columns derived from aircraft profiles over Eurasia and North America are used to estimate the seasonal integral of net ecosystem exchange (NEE) between the atmosphere and the terrestrial biosphere in the Northern Hemisphere. We find that NEE is 25...

This paper proposes a hybrid approach for cochannel speech segregation. HMM (hidden Markov model) is used to track the pitches of 2 talkers. The resulting pitch tracks are then enriched with the prominent pitch. The enriched tracks are correctly grouped using pitch continuity. Medium frame harmonics are used to extract the second pitch for frames with only one pitch deduced using the previous s...

In 2010 the Australian Civil Aviation Safety Authority (CASA) published a paper titled ‘Biomathematical Fatigue Modelling in Civil Aviation Fatigue Risk Management: Application Guidance’. In March 2014 an updated version of this document titled ‘Biomathematical Fatigue Models Guidance Document’ was released. The intent of the documents is to provide the aviation industry with updated guidance o...

In today’s world of highly dynamic computing environments, autonomic applications are the need of the hour. By an autonomic application, we mean an application that is able to adapt to changes in its execution environment dynamically and transparently. CASA (Contract-based Adaptive Software Architecture) provides a framework for enabling the development and operation of autonomic applications. ...

Conventional meteorological radars provide coverage for long ranges (often hundreds of kilometers) and support weather surveillance and hydrological monitoring applications by using high power transmitters and mechanically scanned antennas. These systems operate at wavelengths in 5–10 cm range in order to minimize attenuation due to precipitation, and this necessitates the use of physically lar...

Understanding the timbre and pitch of musical instruments is an important issue for automatic music transcription, music information retrieval and computational auditory scene analysis. In particular, recent worldwide popularization of online music distribution services and portable digital music players makes musical instrument recognition even more important. Musical instruments are one of th...