Some are free, while others have a subscription plan.įor example, Audacity or Adobe Audition are great apps for people who work professionally with sound, be it in the music industry or film. You’ll also have to consider how much money you can invest in noise-canceling software. A musician will use a different app with studio headphones for their recording sessions than an office worker on Skype or Zoom business calls. You need to first ask yourself what your needs are. There are so many noise-canceling apps out there, it can be challenging to find the one that suits your needs. We can’t make bad audio sound perfect, but we can make it sound better.How to Decide Which Noise Canceling App to Use the thickness of the waveform in the noisy, or non-selected, area. In the waveform, notice the difference in the thinness of the waveform in the selected area, vs. When you are happy with the results, click Apply in the lower right corner. You can’t achieve perfection, simply make the clip sound as good as you can. In almost all cases, you won’t be able to get rid of all the noise and the voice will always degrade a bit. If the voice sounds too “electronic” or degraded, adjust the same two sliders until the voice sounds as rich as possible, while reducing the amount of the noise as much as you can. Then, uncheck Output Noise Only and listen to the results. With the clip playing, adjust Noise Reduction and Reduce by so that the noise is as loud as possible and the voice is as soft as possible. ![]() Then, click Play button immediately next to it and listen to the playback. I’m describing a process, not specific settings.Ĭlick the Toggle Loop button (the hooky arrow thingy) in the lower left corner so that it turns green, This plays the selection over and over. NOTE: Each clip is different, as are the settings. My goal is to make the noise as loud as possible, while including the least amount of voice as possible. This allows me to hear the noise I’m removing. In the lower left corner, check Output Noise Only. However, here’s a technique that works for me. There are a LOT of settings here that can be tweaked. With the noisy portion of the clip selected, choose Effects menu > Noise Reduction/Restoration > Noise Reduction (process). However, since I want to illustrate a “before” and “after,” I’ll only select a portion of this clip. Generally, I remove it from the entire clip. Select the audio from which you want to remove the noise. This dialog warns you that you are copying that audio data into a special clipboard that will use your selection to determine the noise you want to remove. With the noise selected, choose Effects menu > Noise Reduction/Restoration > Capture Noise Print. The best place to look is the short space between sentences however, be careful not to include a breath from your speaker. This needs to be at least 1/4 second to get a decent sample. Select as much “pure noise” as you can find in the clip. Unlike Adaptive Noise Reduction, if you want the noise reduced without a fade, then you should use this technique.Īfter importing the clip into Audition, double-click the clip to load it into the Waveform editor. However, syncing these new recordings with the originals is time-consuming and tricky. This ALWAYS yields the best quality with the greatest control. If you want to remove noise, your best – and sometimes only – option is to re-record your actors in an acoustically-treated room. After all, hearing the sound of the location is why we went to that location in the first place. On the other hand, most of the time we don’t want to remove these sounds, we simply need to reduce them. ![]() Removing voices behind your actors can be very, very difficult. ![]() Worse, the frequencies of the talking you want to remove are, essentially, the same as the frequencies of the talking you want to keep. Machine noise, like fans or air conditioners, are higher frequencies, but, generally, defined by some very specific pitches. (We use “Hz,” or “Hertz,” as the abbreviation for “cycles per second.”) Low frequency hum is around 60 Hz, so it is easy to separate voices from hum based on this frequency difference. Human speech is roughly 200 cycles per second to about 6,000 cycles. Why? Because all sounds exist as a series of rapidly changing frequencies. The hardest noises to get rid of are echoes and people talking in the background. The easiest noises to get rid of are low-pitched hums. Machine noises are interwoven with everyday life unless “everyday” is the Middle Ages. But, in a sad death scene, a cheering crowd is distracting. ![]() Noise is anything you don’t want to hear in your clip.įor example, in a football video, a cheering crowd adds energy to your video. However, it is often best to clean-up audio in a dedicated audio program, such as Adobe Audition. There are some good noise reduction tools in Final Cut Pro X and Premiere Pro CC.
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