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4

In a way everything other than the signal you're interested in is noise. Silence is the 'weird' thing, not noise. There are many types of noise produced in different ways. But the most common (the one you're most probably talking about) is the noise caused by the equipment itself. As a current flows through a conductor (even more a resistor), some ...


3

Wavelength is the inverse of frequency (1/f) so all you need is to perform an FFT (Fast Fourier Transform) on your signal to get its spectrum (harmonic content). This can be done in many ways but from the way the question is formed ("Is there any way to extract wavelength ranges out of it? I only need to know the numbers."), I suspect Matlab or Scilab might ...


3

The first thing is, don't make it totally gone at any point. Listen to the audio of medical dramas like Grey's Anatomy; the sound never really leaves the soundtrack completely. Fade it down and up, but not completely out. Second, use viewpoint changes in the camera editing to adjust the level of the sound; take the opportunities when the camera moves ...


2

For quiet birdsong, etc. a dish would be the real solution (telinga, etc.). The pcmd50 does very great job, especially for the price, but don't wait sennheiser of schoeps performance from it. With all that said, I think many-many pcm-d50 recordings went into big productions, because it is a very decent recorder, even with the built in mics. One thing you ...


2

Unfortunately, this is the cost/quality dichotomy we all face, particularly when starting out (as I am also). It just can't be expected of a piece of kit costing less than a grand to perform the same as kit that will cost five times that. I'm sure you're aware of this, but I'm just stating the point. All the same, hiss isn't going to ruin the recording (...


2

I'd be more inclined to remove the white noise from the speech than try add it back in the silence. There are some very good paid plugins that can do it - personally I use a lot of the Waves plugs, X-Noise etc - but there are freeware alternatives. Noise Reduction is one that Google turned up. Untested but for free you can try it & see if it's any good ...


2

Ingmar Bergman is probably one of the best one's who intensively used silence in hie films.


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What is best to do if you record something specific is also record the room 'silent', so than you get the environment sound of the subject your recording. Add these layers together and you'll get your 'white noise' in a less artificial way.


1

Surprised nobody here has mentioned actual denoising algorithms. If you can't remove the source of the noise or can't re-record what you already have, look into effects such as izotope rx and edison. Even Audacity, which is free, has a noise reduction algorithm. You've highlighted a section of the pure noise, which is what is fed to the algorithm as an ...


1

Look for a 'noise gate'. I don't use Audacity myself and it looks as though my initial assumption that you'd have one built in is wrong: search for 'audacity noise gate' on google and you'll see results which suggest you need to get a separate plugin.


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A script would have to be able to distinguish between dialogue you want to keep, and "noise", as thresholds and other means wouldn't work in this scenario. It would be easier (IMO) to simply place markers (M-key) where you wish to silence the track, prior to/post your fade-in/out points. Then select the space between the markers, click 'Process' and reduce ...


1

Just an idea (which needs further research): do you actually need the silence to be a file or could you just play dynamically created data? If the latter is the case, you could probably find a solution to call a program that creates a silent audio file in realtime and put that in your playlist. That way you would entirely get around the file size issues for ...


1

The whole idea with noise is that it is random sound. You can't really easily produce a noise that replicates what was there, so your best bet is to actually use the noise that was present or apply noise reduction to reduce the noise level (if you can get satisfactory results). As Yadli mentioned, if you have a quiet part, you can sample the noise from ...


1

I really liked how nerve wrecking the silence was in the film Insidious you know somethings coming but you don't know when, it works well with the really weird and creepy soundtrack.


1

If the original track contains a section of just the noise, you can make a loop with that and keep it playing in your new track when you mute the original one. If not, you'll have to do some filtering to extract a noise loop. Personally I don't think it's a good idea to generate white noise from scratch to mimic the original. It sounds different.


1

I think these guys have provided some great answers, but one answer I'm not seeing is to morph the sound. The idea being, the beeping monitor sound changes to something else over a period of time. Slowly morph the sound using filters, distortion, oscillators or other sound fx. You could also morph the sound into another sound, and since a heartbeat is ...


1

Try adding a Low-Pass filter to the beeping sound and automating it. The more high frequency is cut out, it will sound as if it's fading out.


1

Keith gave you some great tips already. In particular, the idea of change is a key psychoacoustic cue to pay attention to something. The more regular and static a particular sound is, and the longer it remains that way, the more likely we are to ignore it. Get it to the point where we are ignoring it, and any little change draws your attention back to it. ...


1

2-3 am sunday morning is by far the quietest in Denmark where I live. But it becomes extreme when there's snow. Showing at 2-3 am sunday morning? I've never heard so much nothing.


1

The use of silence in Gravity is outstanding. Some scenes are completely stripped of sound. The sound team came up with excellent concepts to work around the silence in space. The use of sound from vibrating objects and direct contact through the spacesuits is an excellent example.


1

I recently saw the film Gravity, which deals with the "silence" of space excellently. Worth checking out. Unlike most films set in space, they did not steer away from the fact that in space the is no sound due to the lack of atmosphere. Therefore in this film there was little or very muffled sounds that were there beautifully complemented by a very ...


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