Topic: Latency compensation questions

Viewing 5 posts - 1 through 5 (of 5 total)
  • August 8, 2010 at 07:41 #2333
    Mike G
    Participant

    Hi,
    Quick question I feel I should have found the answer to ages ago about what latencies are “compensated for”….

    Ignoring latency from plug-ins at the moment and the short time it takes for sound to travel to my ears form speakers…(!) (to make my post easier to write!)

    My audio card has a latancy (short time between sound data leaving podium and it arriving at my speakers).

    Also let’s say that the latency is 10ms (for the sake opf agument)

    Let’s say I’m recording some accoustic guitar, (recording audio using a mic, not wearing headphones)
    I’m hearing the stuff I’m playing on guitar straight away and I’m playing along to some tracks coming from podium.

    When I play back after recording including the guitar has the acc guitar now moved forward (compensated) 10ms so it is at the same position it was when I was playing along?

    I realise that if, when I was recoding, I was using headphones, both the guitar and the existing tracks both already had the 10 ms delay.

    hope that’s enough details.

    is there a section in guide about compensation… could’t see any details…

    thanks,
    mike g

    August 8, 2010 at 19:39 #19135
    Zynewave
    Keymaster

    Tricky thing, this latency compensation.

    @Mike G wrote:

    When I play back after recording including the guitar has the acc guitar now moved forward (compensated) 10ms so it is at the same position it was when I was playing along?

    Yes. Recordings made from audio inputs assigned on a track will be compensated assuming that what you record is performed in sync with something that you play back in Podium, even if it’s just the metronome.

    August 9, 2010 at 07:43 #19137
    Mike G
    Participant

    Tricky indeed!
    (I knew it was going to be difficult.)
    Sorry I don’t think I worded the original question very well at all.

    I suppose the idea of this is that when you playback, all the original tracks (or mertonome!) are in sync the sound of the guitar that you could hear as you were playing along.

    BUT… there are 2 possible slightly different guitar sounds the rest of the mix could be in sync with … and I’m trying to figure out which one.

    1 – I can hear the accoustic instrument with my ears before it goes through the system at all. (i.e. I wasn’t weraring headphones when I recorded the guitar, or alternatively I was weraing headphones but had a headphone mix in my audio interface with the mic input going directly (zero latency) back to the headphones)

    2 – I can hear the guitar in my headphones (this will be a delayed by 10ms as the input is going into podium but then out through the main audio outs with everything else)

    Hope that’s clearer.
    Thanks.

    August 10, 2010 at 01:14 #19143
    Zynewave
    Keymaster

    Yes, I understood your description of the two types of latencies from your first post. What was the question again?

    I think recorded material should be compensated so that when played back, it is reproduced as it was performed, and not as it was (or if it was) monitored through Podium. The only case where it would make sense to compensate the recording to the monitored signal, was if the performer actually sang/performed ahead of time, to make his/her own monitored signal sound in sync. That surely is not the best way to go about recording.

    August 10, 2010 at 08:05 #19146
    Mike G
    Participant

    Thanks Frits, That’s clearer now.

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