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The Latency Misnomer, explained... well, sort of... Posted by Steve...R (from: 194.117.133.196) on July 31, 2001 at 08:53:57: All, I have read a lot of information on latency and have found that a lot of people consider the soundcard to be the only consideration to make when considering latency. Although this is a good sound way of thinking as the main problem with in/out audio latency is heavily affected by the audio card and drivers. I have read that the operating system and system hardware are much to blame as well and felt that it would be of benefit to quote this information from an editorial I read. QUOTE: The research examined the audio latency of major operating systems running on modern equipment. It was authored by Karl MacMillan, Michael Droettboom and Ichiro Fujinaga of the Peabody Institute – part of John Hopkins University in the US. Audio latency is defined in the report as the minimum time required for a computer to store a sample from an audio interface into application memory, and to copy that sample from application memory to the audio interface output. The authors also took the time spent converting analogue to digital and back to analogue sound into account. Long latency speeds when working with audio mean that musicians experience delays in listening to what they play when trying to create music tracks. This also makes it challenging to record live performances - as the latency speed can affect the sounds heard through the monitors. END QUOTE All though this doesn't state much, you can see that the operation is affected by the speed of the given OS and system buss so, when you consider your audio card, consider what operating system is best for it and make sure you buy a computer that is made with audio processing in mind. Take this advice and the people complaining about latency when using this that or another hardware/software will hopefully reduce... I thought it was interesting anyway... ;0) Regards Steve...R Follow Ups: Re: kozida 10:32:52 7/31/01 (2) Re: kozida 14:46:30 8/01/01 (0) Re: jack 05:56:27 8/01/01 (1) Post a Followup Name: E-Mail: Subject: Comments: : All, : I have read a lot of information on latency and have found that a lot of people consider the soundcard to be the only consideration to make when considering latency. Although this is a good sound way of thinking as the main problem with in/out audio latency is heavily affected by the audio card and drivers. I have read that the operating system and system hardware are much to blame as well and felt that it would be of benefit to quote this information from an editorial I read. : QUOTE: : The research examined the audio latency of major operating systems running on modern equipment. : It was authored by Karl MacMillan, Michael Droettboom and Ichiro Fujinaga of the Peabody : Institute – part of John Hopkins University in the US. : Audio latency is defined in the report as the minimum time required for a computer to store a : sample from an audio interface into application memory, and to copy that sample from application : memory to the audio interface output. The authors also took the time spent converting : analogue to digital and back to analogue sound into account. Long latency speeds when working with audio mean that musicians experience delays in listening to what they play when trying to create music tracks. This also makes it challenging to record live performances - as the latency speed can affect the sounds heard through the monitors. : END QUOTE : All though this doesn't state much, you can see that the operation is affected by the speed of the given OS and system buss so, when you consider your audio card, consider what operating system is best for it and make sure you buy a computer that is made with audio processing in mind. Take this advice and the people complaining about latency when using this that or another hardware/software will hopefully reduce... : I thought it was interesting anyway... ;0) : Regards : Steve...R Optional Link URL: Link Title: Optional Image URL: [ Follow Ups ] [ Post Followup ] [ Music Software Discussion & Help Page ] [ FAQ ]

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