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Does cable length cause latency
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Old 14th October 2012   #1
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Does cable length cause latency

Hi all

I have a Roland HD1 digital drum kit, connected to my DAW (Logic Pro 9) via a Profire 2626 through a 10m audio cable. When i record into Logic, i can't seem to play in time. Does the cable length cause this latency, and if so what is the maximum cable length that is acceptable to not cause latency? Or is this something to do with the settings in Logic?

Many thanks for any help you can give me
Best regards
Rob
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Old 14th October 2012   #2
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It's not audio cable that is causing latency. It's interface plus DAW. Electronic drums also have some latency. It sums up. But first - try to reduce latency of your DAW system as low as possible.
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Old 15th October 2012   #3
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I have a Profire2626. The built in Profire control panel could be causing a delay-type sound from hearing the drums from two places: First the Profire monitoring app and then slightly later from Logics monitoring output. Causes a phasey delay sound.

Decrease Logics input buffer as low as it will go and see if it fixes things. If not, check how your monitoring
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Old 15th October 2012   #4
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Hi
Latency on audio cabling is only an issue when you are considering hundreds of miles of cable, at which point that will be the least of the problems.
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Old 15th October 2012   #5
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On an unrelated note: DEFINITELY use the HD1s MIDI OUT to play virtual drum kits like Battery, BFD or even the GarageBand samples. They're MUCH better than the stock HD1 ones and you can mess with the MIDI after recording.
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Old 15th October 2012   #6
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latency and monitoring

The delay you are experiencing is, as others have stated, caused by all the processing.

My suggestion would be to develop a monitor path "outside the box". Listen directly while you're cutting tracks, then monitor thru your software to hear what you did.

While recording, monitor the output of your drums before it goes into the DAW and mute the "thru" of your drum sound so drums are not playing out of the D-A output.

Mix the output of DAW with the drums outside the box and you should be in sync so you can record. After you cut some killer tracks, switch on and monitor thru your D-A to hear your work.

Good Luck and good music to all.
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Old 15th October 2012   #7
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Quote:
Originally Posted by dergit View Post
On an unrelated note: DEFINITELY use the HD1s MIDI OUT to play virtual drum kits like Battery, BFD or even the GarageBand samples. They're MUCH better than the stock HD1 ones and you can mess with the MIDI after recording.
Right (you forgot Superior2) - those VSTi drums even beat the most expensive top-modules by far in overall quality.
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Old 15th October 2012   #8
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Well there IS a latency in the speed electricity goes through a cable.
It's about a millionth of a second for every 2 feet.
So unless your mic cables are 20 or 30 MILES long you dont have to worry....

;-))
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Old 16th October 2012   #9
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Well I can get london to reply to me in 13ms, I live around 250 miles away. So I don't really think having a long cable has too much of an impact
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Old 16th October 2012   #10
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Quote:
Originally Posted by Matt Syson View Post
Hi
Latency on audio cabling is only an issue when you are considering hundreds of miles of cable, at which point that will be the least of the problems.
Matt S
My calculation is that 100 miles of cable will introduce a propagation delay of half a millisecond. So even 100 miles is not really enough to introduce significant latency!
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Old 16th October 2012   #11
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Quote:
Originally Posted by TimOBrienFlorida View Post
Well there IS a latency in the speed electricity goes through a cable.
It's about a millionth of a second for every 2 feet.
So unless your mic cables are 20 or 30 MILES long you dont have to worry....
That's overestimated by three orders of magnitude! 2 feet will delay a signal by 2 BILLIONTHS of a second. (2x10-9 s) LOL!
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Old 16th October 2012   #12
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That's overestimated by three orders of magnitude! 2 feet will delay a signal by 2 BILLIONTHS of a second. (2x10-9 s) LOL!
Well if we are using a computer standard ping as a reference, every 1000KM is roughly around 6.7ms obviously dependant on cabling structure.

Speed of light in a vacum is faster than something like a fibre optic distribution.

Still it doesn't really matter if you have a 30 foot cable LOL!..
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Old 16th October 2012   #13
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Hi
All bets are off if there is a computer involved with anything!
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Old 17th October 2012   #14
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Analog doesn't have latency issues. Digital always does.
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Old 17th October 2012   #15
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Analog doesn't have latency issues. Digital always does.
That's true, but I can slap an interface with a laptop in a bag and go anywhere with digital.. I can't do that with analogue
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Old 17th October 2012   #16
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Thanks for all your help. I will see how i can adjust the monitoring setup to reduce the latency

Best regards
Rob
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Old 17th October 2012   #17
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Quote:
Originally Posted by ShadowAMD View Post
That's true, but I can slap an interface with a laptop in a bag and go anywhere with digital.. I can't do that with analogue
Ha! Somehow we always find a way to bring up an analog vs digital war!
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Old 17th October 2012   #18
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That's true, but I can slap an interface with a laptop in a bag and go anywhere with digital.. I can't do that with analogue
Wait..you can't carry a 4-track with you?
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Old 17th October 2012   #19
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Wait..you can't carry a 4-track with you?
You mean several multitrack tape manchines, an effect rack plus a fully featured console with 100 channels and multiple EQs- and compressors on every strip
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Old 17th October 2012   #20
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Quote:
Originally Posted by mattjew24 View Post
Analog doesn't have latency issues. Digital always does.
Before sync-record/monitoring became commonplace on multi-track tape recorders there was some serious latency between the play and record heads ;-)

For me, one of the best arguments for an analog mixing and monitoring path is the complete elimination of latency.

I can't stand latency, I can't perform if I'm hearing any and even on systems that are supposed to be very low latency I still feel it.

Things always sound right on my consoles.

Good music to all!
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