Mots clés
2004 |
Fober, Dominique; Letz, Stephane; Orlarey, Yann MidiShare : une architecture logicielle pour la musique (Book Chapter) Hermes, (Ed.): Informatique musicale : du signal au signe musical, pp. 175–194, 2004. (Abstract | Links | BibTeX | Étiquettes: communication, network, real-time, wireless) @inbook{ Fober:04a ,
title = {MidiShare : une architecture logicielle pour la musique}, author = {Dominique Fober and Stephane Letz and Yann Orlarey}, editor = {Hermes}, url = {MSHermes04.pdf}, year = {2004}, date = {2004-01-01}, booktitle = {Informatique musicale : du signal au signe musical}, pages = {175–194}, abstract = {Le développeur d’une application musicale est souvent confronté à des problèmes difficiles à résoudre, notamment parce qu’ils sont relatifs à la maîtrise du temps. Le manque de support des systèmes d’exploitations courants, l’absence de standard, les problèmes de portabilité qui en résultent ne facilitent pas la tâche du programmeur. Nous présentons MidiShare, une architecture logicielle qui a été conçue dans le but de couvrir les besoins des applications musicales de manière homogène, durable et portable. Nous montrons également à travers plusieurs exemples, comment cette architecture facilite le développement, notamment grâce à des mécanismes simples et efficaces de gestion du temps et de communication en temps réel.}, keywords = {communication, network, real-time, wireless}, pubstate = {published}, tppubtype = {inbook} } Le développeur d’une application musicale est souvent confronté à des problèmes difficiles à résoudre, notamment parce qu’ils sont relatifs à la maîtrise du temps. Le manque de support des systèmes d’exploitations courants, l’absence de standard, les problèmes de portabilité qui en résultent ne facilitent pas la tâche du programmeur. Nous présentons MidiShare, une architecture logicielle qui a été conçue dans le but de couvrir les besoins des applications musicales de manière homogène, durable et portable. Nous montrons également à travers plusieurs exemples, comment cette architecture facilite le développement, notamment grâce à des mécanismes simples et efficaces de gestion du temps et de communication en temps réel.
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2003 |
Fober, Dominique; S.Trebuchon, Evaluation des performances de 802.11b (Technical Report) 2003. (Abstract | Links | BibTeX | Étiquettes: communication, network, real-time, wireless) @techreport{ Fober:03a ,
title = {Evaluation des performances de 802.11b}, author = {Dominique Fober and S.Trebuchon}, editor = {Grame}, url = {TR-030613.pdf}, year = {2003}, date = {2003-01-01}, booktitle = {Technical Report – 03-06-13}, abstract = {L’utilisation de réseaux sans fil dans le domaine musical ouvre des perspectives prometteuses, tant d’un point de vue artistique que technique. Ce domaine d’application impose cependant des contraintes de fiabilité et de temps réel spécifiques. Nous avons donc mesuré les performances de 802.11b en fonction de ces contraintes et nous présentons les résultats correspondants ainsi que leur analyse.}, keywords = {communication, network, real-time, wireless}, pubstate = {published}, tppubtype = {techreport} } L’utilisation de réseaux sans fil dans le domaine musical ouvre des perspectives prometteuses, tant d’un point de vue artistique que technique. Ce domaine d’application impose cependant des contraintes de fiabilité et de temps réel spécifiques. Nous avons donc mesuré les performances de 802.11b en fonction de ces contraintes et nous présentons les résultats correspondants ainsi que leur analyse.
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2002 |
Fober, Dominique Audio Cards Clock Skew Compensation over a Local Network (Technical Report) 2002. (Abstract | Links | BibTeX | Étiquettes: audio, clock, network, real-time, skew) @techreport{ Fober:02a ,
title = {Audio Cards Clock Skew Compensation over a Local Network}, author = {Dominique Fober}, editor = {Grame}, url = {AudioClockSkew.pdf}, year = {2002}, date = {2002-01-01}, booktitle = {Technical Report – 02-04-01}, abstract = {This paper is the continuation of a previous work done on clock skew compensation over a high latency network. It evaluates the efficiency of the EPTMA clock skew detection algorithm applied to real-time audio streaming over a local network. The presented results include real world apparent deviations of audio card clocks and acuracy of the skew detection. It appears that EPMTA is very suitable to measure clocks deviation in the context of audio transport. Finally, a simple method to compensate for the clock skew is presented, mainly to evaluate a complete solution for audio streaming.}, keywords = {audio, clock, network, real-time, skew}, pubstate = {published}, tppubtype = {techreport} } This paper is the continuation of a previous work done on clock skew compensation over a high latency network. It evaluates the efficiency of the EPTMA clock skew detection algorithm applied to real-time audio streaming over a local network. The presented results include real world apparent deviations of audio card clocks and acuracy of the skew detection. It appears that EPMTA is very suitable to measure clocks deviation in the context of audio transport. Finally, a simple method to compensate for the clock skew is presented, mainly to evaluate a complete solution for audio streaming.
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Fober, Dominique; Orlarey, Yann; Letz, Stephane Clock Skew Compensation over a High Latency Network (Inproceeding) ICMA, (Ed.): Proceedings of the International Computer Music Conference, pp. 548–552, 2002. (Abstract | Links | BibTeX | Étiquettes: clock, communication, music, network, real-time, synchronization) @inproceedings{ Fober:02c ,
title = {Clock Skew Compensation over a High Latency Network}, author = {Dominique Fober and Yann Orlarey and Stephane Letz}, editor = {ICMA}, url = {ICMC02-ClockSkew.pdf}, year = {2002}, date = {2002-01-01}, booktitle = {Proceedings of the International Computer Music Conference}, pages = {548–552}, abstract = {Exchange of time stamped events between different stations raises the problem of the clock frequencies difference as soon as one station try to compensate for the transmission delay and to render the events with a minimum time distortion. We propose a simple, efficient and low cost method to compensate for the clock frequencies difference. This method rely only on regular time stamped packets transmissions and may be used in many cases. It provides good performances to the receiver station in regard of the sender reference time even on a heavily loaded communication channel. It operates also very efficiently on a low latency local network}, keywords = {clock, communication, music, network, real-time, synchronization}, pubstate = {published}, tppubtype = {inproceedings} } Exchange of time stamped events between different stations raises the problem of the clock frequencies difference as soon as one station try to compensate for the transmission delay and to render the events with a minimum time distortion. We propose a simple, efficient and low cost method to compensate for the clock frequencies difference. This method rely only on regular time stamped packets transmissions and may be used in many cases. It provides good performances to the receiver station in regard of the sender reference time even on a heavily loaded communication channel. It operates also very efficiently on a low latency local network
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