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brianh19081677
Participant
January 28, 2019
Question

Audio 'Echo' issue

  • January 28, 2019
  • 1 reply
  • 242 views

I have synced two mic sources from a two camera shoot, one mic on each camera.  When synced they sound like an echo, but separate they sound just fine.

One clip has 48000Hz - 16 bit - 4 channels

Second clip has 48000Hz - 24bit - 8 channels

Can this be fixed in Audition somehow?

Thanks!

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    1 reply

    SteveG_AudioMasters_
    Community Expert
    Community Expert
    January 28, 2019

    brianh19081677  wrote

    I have synced two mic sources from a two camera shoot, one mic on each camera.  When synced they sound like an echo, but separate they sound just fine.

    That, I'm afraid, is a classic definition of not synced!

    If the clocks in the cameras weren't locked together then any audio recorded on them won't be locked either. It takes surprisingly little drift between two supposedly identical clock sources for this to happen. Also, if the mics were any distance apart, and a different distance from the sound source, you have an additional issue to deal with; sound travels about a foot per millisecond, so if there's a difference of 10 feet between each mic and the source, that will introduce a 10ms additional error.

    If you put the clips you've got on two tracks in multitrack, aligned as best you can, and select both of them you could try right-clicking with the mouse hovered over them, and selecting Automatic Speech Alignment. Sometimes this can work rather well, and not just with speech either - I've had good results out of it with a singer.