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Does anyone know how to reduce the echo or reverberation in a dialogue sound track. I have to men talking in a room and there is some bounce off the walls. Is there any way to reduce or flatten that? I know there are some filters that can add room reverberation but is there a way to reduce it?
PowerMac, Mac OS X (10.5.1), Final Cut Pro studio 5
It is very difficult to remove reverb as it is exactly in the same frequency range as the original voice (duh!).
What this means is - as you cut the frequencies of the echo, you are also cutting the frequencies of the main dialog.
You can try a threashold filter and see if it can cut off the less strong bits of the echo but, in all likelyhood, as you raise the db cutoff limit, the sound will either start to pump or start cutting your dialog as well.
If the reverb tends to come back in a specific frequency range, you may be able to use a notch filter to specifically knock down those so that you reduce the bouncy room sound some. In reality though, there is no magic "get out of jail free" card for this.
fwiw - this is why it is so valuable to have someone on set with earphones whose only job is to monitor the audio levels and quality. They would have caught this as it was happening and given you a chance to adjust the recording set up at the time. In any case, if you can't get it within reason using audio tools, it's time for ADR or a more creative use of the material.
Good luck.
x
It is very difficult to remove reverb as it is exactly in the same frequency range as the original voice (duh!).
What this means is - as you cut the frequencies of the echo, you are also cutting the frequencies of the main dialog.
You can try a threashold filter and see if it can cut off the less strong bits of the echo but, in all likelyhood, as you raise the db cutoff limit, the sound will either start to pump or start cutting your dialog as well.
If the reverb tends to come back in a specific frequency range, you may be able to use a notch filter to specifically knock down those so that you reduce the bouncy room sound some. In reality though, there is no magic "get out of jail free" card for this.
fwiw - this is why it is so valuable to have someone on set with earphones whose only job is to monitor the audio levels and quality. They would have caught this as it was happening and given you a chance to adjust the recording set up at the time. In any case, if you can't get it within reason using audio tools, it's time for ADR or a more creative use of the material.
Good luck.
x
Thanks for the thoughtful response. I think I will also run some additional Room Tone under the dialogue track to mask a little of the reverb and add consistency to the scene. Thanks.
Hope you are able to get it workable.
x
too much echo and reverberation
