Searched for: department%3A%22Telecommunications%22
(1 - 3 of 3)
document
Van Kester, S. (author), Xiao, T. (author), Kooij, R.E. (author), Brunnstrom, K. (author), Ahmed, O.K. (author)
This paper studies the impact of freezing of video on quality as experienced by users. Two types of freezes are investigated. First a freeze where the image pauses, so no frames were lost (frame halt). In the second type of freeze, the image freezes and skips that part of the video (frame drop). Measuring Mean Opinion Score (MOS) was done by...
journal article 2011
document
Kooij, R.E. (author), Klos, V.B. (author), Godana, B.E. (author), Nicolai, F.P. (author), Ahmed, O.K. (author)
Nowadays various digital television services are available. However, the user of these services experiences longer delays than the traditional analog TV while switching from channel to channel. The digital TV operator usually displays a black screen with the channel number during zapping. However, it could be interesting for the TV viewer, if...
journal article 2009
document
De Hoop, A.T. (author), Lam, C.H. (author), Kooij, B.J. (author)
Closed-form analytic time-domain expressions are obtained for the acoustic pressure associated with the reflection of a monopole point-source excited impulsive acoustic wave by a planar boundary with absorptive and dispersive properties. The acoustic properties of the boundary are modeled as a local admittance transfer function between the...
journal article 2005