New answers tagged audio-processing
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Everything is possible with advanced technology, due diligence and perseverance. To discuss the means to reach your goals requires even more detailed description of target scenarios.
If you have a pure tone -- I mean, a musically pure single note performed by a good musician with a quality instrument or an opera singer -- you can analyze this sound by ...
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The fact that your source is 30m away means that your ratio of direct to reverberant sound is likely quite low. I think this makes your task much more difficult if not impossible. Do you detect any directionality in the original recording, or just a sense of ambience ?
Bob
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As most of the answers already provided state, this is quite tricky and rather difficult to achieve faithful decomposition of the sound field.
Since you are considering a pair of microphones you could consider two different methods to decompose the impinging sound field into idealized plane waves.
Coincidence microphones: Here you have to use the magnitude ...
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You're trying to do the time warp dance. If you were copying the samples point by point, your playback time (destination) and your look up time (source) would be the same. If you wanted to speed it up by a factor of two(one octave), your lookup time (source location in the array) would be moving twice as fast as your sample time (location in your output ...
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Can we assume this is a dry two-channel recording, i.e. there is no "production" after effect to add more reverb, or tweak the phases etc...?
Do you have access to the original set-up?
The theoretical approach would be to
determine the impulse response for the first recording, for each channel (L & R). If you don't have it, try to estimate it ...
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That's tricky
Basically you need to first recover the original left/right content and then re-render through the new microphone geometry. In this case you could do a time-frequency analysis and look for content that's correlated (similar phase) but has significant inter-channel level differences. You would re-render it by reducing the level difference (based ...
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Which algorithms can be used to "re-spatialize" this recording, i.e. try to virtually "move the microphones", and recreate a new stereo signal, for example with an AB mic positioning?
In general, this is a beamforming "problem", but it cannot be done in exactly the way it is described here.
With a setup like this, you can ...
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