Philips

About: Philips is a company organization based out in Vantaa, Finland. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 68260 authors who have published 99663 publications receiving 1882329 citations. The organization is also known as: Koninklijke Philips Electronics N.V. & Royal Philips Electronics.

A Review of Audio Fingerprinting

Abstract: An audio fingerprint is a compact content-based signature that summarizes an audio recording. Audio Fingerprinting technologies have attracted attention since they allow the identification of audio independently of its format and without the need of meta-data or watermark embedding. Other uses of fingerprinting include: integrity verification, watermark support and content-based audio retrieval. The different approaches to fingerprinting have been described with different rationales and terminology: Pattern matching, Multimedia (Music) Information Retrieval or Cryptography (Robust Hashing). In this paper, we review different techniques describing its functional blocks as parts of a common, unified framework.

Application infrastructure platform (AIP)

Abstract: Disclosed is an application infrastructure platform (AIP) having an application service provider (ASP) environment including multiple ASP systems providing application services to customers, and a common services environment including hardware and software and management systems providing to the ASP systems applications and integrated application, back-office, and management services used by the ASP systems in delivering their application services to their customers. In another aspect, the AIP is associated with a development and test bed environment which conducts product and service development and testing.

Charge-carrier concentration dependence of the hopping mobility in organic materials with Gaussian disorder

Abstract: It has recently been demonstrated that the hopping mobility in semiconducting organic materials depends on the charge-carrier concentration. We have analyzed this effect within the framework of six existing semianalytical models, for the case of a Gaussian density of states (DOS). These models were either not applied earlier to the case of a Gaussian DOS, or are shown to require a major modification. The mobility is constant below a certain concentration, which decreases with increasing ratio $\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{s}$ of the width of the DOS over the thermal energy ${k}_{B}T$, and it increases for larger concentrations. At very high concentrations final state effects limit this increase or even give rise to a decrease. An analytical expression is given for the mobility, $\ensuremath{\mu}$, in the form of the product of the mobility in the low concentration limit times a concentration $(c)$ and $\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{s}$-dependent enhancement factor. Depending on $c$, $\mathrm{ln}(\ensuremath{\mu})$ varies approximately linearly with $1∕T$ or with $1∕{T}^{2}$. This finding may lead to a solution for the long-standing controversy between polaron-based and disorder-based hopping models.