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Tempo Dependant Delays ?

Discussion in 'Recording' started by Trenchcoatangel, Aug 3, 2003.

  1. K, I know there's the whole trail and error method(which sucks). I also know there is a formula for tempo dependant delays. I've used it once before, but someone else just rambled me the formula, I punched it in and didn't really have all that much time to take note of it. I was just wondering if anyone here would happen to know it, cuz I got a spot in a piece that is just begging for that effect, but I'm just tiered of the trail and error method.

    Thank you muchly everone,

    Catcha later
    Rob
     
  2. Hey Trenchcoat Angel,
    Forgive me if I am giving you the wrong info, but I am guessing at what you specifically mean by tempo dependent delay...
    A formula for figuring out delay times based on tempo and subdivisions:
    60 divided by tempo equals value of quarter note in milliseconds, then divide milliseconds for value of desired subdivision.

    So if you were trying to figure out the setting for an eighth note delay on a song that had a BPM of 120 (assuming BPM is quarter notes per minute):

    60/120/2= milliseconds of delay per eighth note

    60 is the number of seconds per minute.

    120 is the number of quarter notes per minute.

    2 is the number of eighth notes per quarter notes.

    Good to see you here, Trenchcoat Angel, hope my edited post is more helpful (thanks to Falkon2 and RecorderMan). David
     
  3. falkon2

    falkon2 Well-Known Member

    Actually, that formula looks wrong... BPM are usually measured in quarter notes, not bars - so a quarter note delay on 120BPM would be 0.5 seconds, rather than the 0.125 seconds suggested by the formula (overlooking the milliseconds part ;) )
    The correct formula has an extra multiplication by 4, and is in seconds, thus:
    (60 X 4) / (BPM X subdivisions) in seconds.

    What I like to do if I'm feeling lazy is to get a stopwatch, time ten consecutive bars, then divide by 10, and further divide by subdivisions.
     
  4. Kewl, thanks for the help guysm either way it gives me somewhere to bounce off of, and yeah, that formula does sound quite familiar.
     
  5. RecorderMan

    RecorderMan Distinguished Member

    simplest version of above:
    60(sec)/BPM= 1/4 note(in milliseconds)

    So if the tempo is 120 bpm;
    60/120=500 milliseconds
    Therefore the quaternote delay for a tempo of 120 bpm is 500ms. an 1/8 note would be 250ms, a 1/16 @ 125ms. A dotted 1/8 @ 375, a 1/4 note triplet would be 166.6 ms, etc.

    I've all but forgot this stuff...what with pro tools.
     
  6. I hear ya there with the pro-tools comment man. Me being fairly new to this in all yet, I wanna learn it all, because the way I figure, I know my system, I know the pro-tools stuff(and most DAW's) I got(as well as most everyone else. I'd just rather know the process behind it, that way when it comes to finding a job I can relate my knowlage to live stuff.

    Or for instance, me living in Minneapolis, most the bigger studio's are still runing analog or ADAT. Non of which I'm fond to compared to the veritility of Daw's, but none the less, still should probably get to know.
     
  7. Oops. It was 2 am. I'm going to edit the post incase someone reads no further. David
     
  8. Ron.G

    Ron.G Active Member

    there is a great little(free) program called the delay calculator that does this for you.
    just type in the tempo of your tune and it shows you all the different times for whole note/eight note/sixteenth and so on.
    I keep it on my task bar so I can pull it up when ever I need it.
    Very cool tool.

    You can get it at anologx.com

    hope this helps.
     
  9. sosayu2

    sosayu2 Guest

    you can always get a stop watch....count eleven beats as you start the watch. that'll be your quarter note delay time.
     
  10. sosayu2

    sosayu2 Guest

    might be your eigth note delay....not sure. it's been awhile since i've used this method.
     
  11. sosayu2

    sosayu2 Guest

    or even easier.....print this link and always carry with you....
    http://www.barryrudolph.com/greg/delay1.html
     
  12. 960054

    960054 Guest

    I've always taked 60000 and divided it by my BPM, then use that number or half that number.

    Extreme

    :s:
     
  13. falkon2

    falkon2 Well-Known Member

    Divide by three's can give some interesting results if used sparingly, and preferably on a loud transient like a snare drum.
     

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