Mots clés
audio communication compiler composition dataflow Domain Specific Language DSP ecosystem Elody FAUST functional graphic inscore interaction language lock-free MIDI MidiShare music music score musicale musique operating processing programming real-time score signal synchronization systems
2005 |
|
Fober, Dominique; Letz, Stephane; Orlarey, Yann Real Time Clock Skew Estimation over Network Delays (Technical Report) 2005. (Abstract | Links | BibTeX | Étiquettes: clock, networking, real, skew, time) @techreport{ Fober:05b ,
title = {Real Time Clock Skew Estimation over Network Delays}, author = {Dominique Fober and Stephane Letz and Yann Orlarey}, editor = {Grame}, url = {TR-050601.pdf}, year = {2005}, date = {2005-01-01}, booktitle = {Technical Report – 05-06-01}, abstract = {Clock skew is one of the significant issues of real-time networking. We have previously proposed a new algorithm for clock skew detection that operates one a one-way measurement, simply based on time stamped packets. This algorithm was initially targeted to Internet transport context. It has been showed that it is also suitable to low latency transport conditions using an adequate parameters set. This report presents improvements to the algorithm as well as as well as parameters characterization, along with the corresponding performance measurements.}, keywords = {clock, networking, real, skew, time}, pubstate = {published}, tppubtype = {techreport} } Clock skew is one of the significant issues of real-time networking. We have previously proposed a new algorithm for clock skew detection that operates one a one-way measurement, simply based on time stamped packets. This algorithm was initially targeted to Internet transport context. It has been showed that it is also suitable to low latency transport conditions using an adequate parameters set. This report presents improvements to the algorithm as well as as well as parameters characterization, along with the corresponding performance measurements.
|
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.
|
|
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
|