1. Why can the original song be deleted?

Suppose there is an audio file in our computer, whether it is MP3, WMA or WAV. Usually an audio file is a song. , when we listen with our ears, there are usually original singers and accompaniments in a song. The characteristics of the original singer can be roughly divided into two types: 1. The sound image position of the human voice is in the center of the entire sound field (balanced distribution of left and right channels

); 2. The sound frequency is concentrated in the mid-frequency and high-frequency parts. . After we understand this, we only need to tell the computer to "eliminate the equal sounds of the left and right channels and the frequencies concentrated in the mid-frequency and high-frequency parts." Therefore, the computer will always be dead. , completely different from the human brain, it only listens to commands and executes them

. So once again I warn everyone that computers or software are dead. They are always tools, things that operate according to your thinking. If you want to use it to make something decent, you still have to* your brain.

2. Which software can eliminate original songs?

There are many software that can eliminate original songs. I personally know of Cool Edit Pro, T-RackS, Vogone, Dart Karaoke, WinRIP, etc. I won’t introduce them one by one here.

Generally speaking, although the effects produced by each software are different, they all fall short of the ideal results. Cool Edit Pro is not an automated software. The most important thing is to listen to it yourself and then give it commands so that it can help you achieve what your brain needs. thing. If you

are interested, you can also search for the following and try them one by one, depending on your needs. Here I will only introduce to you the noise reduction production of Cool Edit Pro and T-

RackS.

3. The basic method of using Cool Edit Pro to eliminate the original song

The method of using Cool Edit Pro to eliminate the original song is actually very simple, but if you want to make it very Perfection still requires some effort.

The "Eliminate Original Singer" I am talking about here is just an independent function in the Cool Edit Pro menu. Select and use it and the results will be available immediately. But if you want to get the best

effect, just using Cool Edit Pro’s “Eliminate Original Singer” menu function is not enough! ! You also have to do a lot of detailed audio processing and settings.

In any case, let us try the simplest method of "eliminating the original song" first.

First enter the "Single Track Editing Mode" interface. Use "File" → "Open" to load an audio file. I have taken "Destined" by Yu Chengqing as an example, and the file name is "Destined.MP3". After tuning in, select "Effects" → "Amplitude" → "Channel Mixer...." (the Chinese version is "Effects" → "Waveform Amplitude" → "Channel Mixer"), Select "Vocal Cut" in "Presets" (see Figure 1), keep the default settings on the dialog box

, and click the "OK" button. After processing, the accompaniment music of the song "Destined" was obtained. The principle of the "Vocal Cut" function is to eliminate the sound image

All sounds (including vocals and part of the accompaniment) located in the center of the sound field. Therefore, the main thing to use this function is to check the source of the accompaniment. Whether there are musical instruments and vocals placed in the center of the sound field before mixing. If there are, this function will eliminate them. Caused sound quality degradation. For example, generally the sound field is placed in the center, including "main voice", BASS... and so on. If the audio source you need to mute is the source of the principles I mentioned, I still recommend not to use this function.

This function will not eliminate the human voice to the extent that the accompaniment music is eliminated, which is really depressing. Haha

Okay, let’s try out your results! Listen very carefully and you will notice that the accompaniment sounds different from the original soundtrack.

The sound of the original singer in the accompaniment tape has become very "virtual", but the sound of the original singer can still be vaguely heard. In fact, this is the so-called silencing effect (absolutely eliminating the original singer is Impossible)

. This kind of accompaniment effect can basically be used as the background music of karaoke. When you sing, your cow-like roar is enough to cover up the original singer's voice. If you are not a friend who requires very original accompaniment, this should still work, hehe. (I'm not finished here yet!)

In addition, the audio quality throughout the accompaniment tape has declined, and what we hear is a lack of three-dimensional accompaniment sound (similar to mono audio ), there may also be some "sizzling" sounds, and the low frequency part has also been weakened a lot. All in all, it sounds very unpleasant.

Perhaps you are very dissatisfied with this effect now, aren't you? Don’t worry, let’s learn some advanced processing techniques. Please pay attention here

The idea of ????the “silencing principle” I mentioned earlier.

4. Advanced Cool Edit Pro elimination

First, let’s summarize the results that we are not satisfied with. First, the sound of the original singer seems not clean enough; second, there is a "sizzling" noise;

Third, the stereo effect is reduced; fourth, the low-frequency effect is weakened .

The above four problems will be corrected one by one below. Start by opening the "Destined.MP3" soundtrack in Cool Edit Pro.

1. Eliminate the original vocal sound more cleanly

Select "Effects" → "Amplitude" → "Channel Mixer...." (the Chinese version is "Effects" → "Waveform Amplitude" → "Channel Mixer..."

"), select "Vocal Cut" in "Preferences". Previously we dealt with the default values, now let's try to adjust the parameters on the left (Figure

2). During the adjustment process, you can click the "Bypassa" checkbox at any time to compare the original sound.

There are two "Invert" checkboxes on the left. By default, one of them has a "√" in front of it. Now we cancel the "√" and the sound becomes smoother

< p> "Dry", but the sound field becomes wider and the three-dimensional effect is enhanced, but the low frequency is reduced more. Maybe this effect is more suitable for some songs, but for some songs it is not very effective. When processing, you still have to debug it slowly and carefully. If this method is not suitable for the songs you want to process, If not, naturally keep the default settings.

Under the default settings, this dialog box is already in a state of eliminating the original sound to the greatest extent. Therefore, if you want to eliminate the original sound more cleanly, there is basically no way here

of. I personally found that songs sung by different people have different effects on the original singer. Some are better, some are far from ideal. But we

can optimize this processing through the four sliders on the left side of the "Channel Remixing" dialog box (see Figure 2). Since the final effect is greatly affected by the original soundtrack, there is no fixed "set" for the adjustment here. You can only move the slider slightly to the center point. The stereo effect will be more obvious, but the vocal

It will also become more obvious. When it comes to stereo and vocal cancellation effects, you have to compromise on one side. Here, the processed result is first saved as "Destined (accompaniment

Instrument).MP3".

2. Eliminate the "sizzling" sound

Noise comes from two places, here I am referring to the noise in the accompaniment. First, your original soundtrack has undergone lossy compression (such as MP3 or WMA encoding), which will naturally appear after the "channel remixing" process; second, it will not Eliminates clean breath and sibilance. Therefore, if conditions permit, the CD audio track should be directly saved to the hard disk in WAVE format for processing.

To eliminate the "sizzling" sound, you generally need to use the "equalizer" function of Cool Edit Pro.

First, load the accompaniment "Fated (Accompaniment

).MP3" that has just been eliminated, and select "Effects" → "Filters" → "parametric Epualizer" (Chinese is "Effects" → "Filter" → "Parameter

Equalizer"). This "parametric equalizer" is not very intuitive for beginners. Friends who don't know much about equalizers can also choose to use the "graphic equalizer" to adjust it. Its operation interface is better than the "parametric equalizer". Equalizer" is much easier to use intuitively. Here I use the "parametric equalizer" to eliminate the "sibilant" sound in the accompaniment.

The function of "equalizer" is to enhance or attenuate the sound intensity of a certain frequency range or several frequency ranges. The "sizzle" sound is usually around 8000Hz. We

we attenuate the sound intensity in this area (see Figure 3).

This processing also helps to further eliminate human voices. For example, the frequency response of the general human voice is dominated by the intermediate frequency, and we can appropriately attenuate the intermediate frequency part. Breathing sounds and sibilance are mainly above 6000Hz - 18000Hz. They can also be attenuated according to the actual situation, but the clarity of the accompaniment will be lost. Equalizers are generally used for repair and optimization. To eliminate vocals, you have to go to "Effects" → "Waveform Amplitude" → "Channel Remixing". Don’t forget to save when you’re done here!

3． Stereo effect enhancement

Stereo effect enhancement is a relatively professional processing method. Since I cannot write it out completely at the moment, I will only briefly talk about the stereo enhancement method. You can use stereo effect

Effect enhancement plug-ins (such as WAVES plug-in effect equipment is a good processing plug-in, I will not introduce them one by one here) or use professional stereo enhancement software to make appropriate adjustments, or you can Add some reverb.

4. Low frequency compensation

"Destined (accompaniment).MP3" is the result after we eliminated the original vocals and the "hiss" sound, but its audio was attenuated a lot. To compensate for

low frequencies, you can use Cool Edit Pro's "Equalizer", but do not use this file that has been "muffled" because of its low-frequency effect

It has been attenuated. If gain processing is performed, the effect will not be as good as the original soundtrack, so we use the original soundtrack for processing. Take out the low-frequency part of the original soundtrack as a compensation for the accompaniment.

Now first tune in the "Destined.MP3" soundtrack, select "Effects" → "Filters" → "parametric Epualizer" (Chinese is "Effects" → "Filter" → "Parametric Equalizer") , after entering the "Parametric Equalizer", adjust the parameters to look like Figure 4. Click "OK" to process immediately, so that you can get the low-frequency part of the "Destined" soundtrack. Here, save the file as "Destined (BASS).MP3" for now. (Remind everyone again, it is best to save in lossless WAV format from the beginning, so that the final effect will be better.)

5. Multi-track synthesis

I don’t need to say more about multi-track synthesis. You must be familiar with it. Here, first insert the silenced "Destined (accompaniment).MP3" into the first track; "Destined (BASS).MP3" is inserted into the second track, and the mixing is done. If you feel that the volume of the two audio tracks is not very balanced, you can adjust the volume of the next two audio tracks in multi-track mode until you hear the accompaniment is full and suitable, then mix and save it.

The focus of human voice elimination is actually to strike a balance between the degree of human voice cancellation and the playback effect. If the playback effect is not considered, the human voice can be eliminated more cleanly, but

This way It’s not necessary, as long as your voice can cover the original song when you sing. In this way, the effect in the accompaniment tape can be guaranteed, and the original singing sound will not be too obvious.

I would like to warn everyone here that I personally recommend this method only for reference and study, and do not expect it to bring you any good results.

Also, the use of this method

mainly depends on the source of the songs you want to silence. Not all songs can be eliminated. It must first meet the principle conditions I mentioned earlier.

Don’t blame yourself or others for poor results. Don’t blame your pretentiousness or the sound card of your device or anything like that. Because the production of these methods has nothing to do with the equipment

The quality of the effect is by no means caused by your equipment. The most important role of the sound card in producing the effects here is to output sound so that you can get the effect. Good

Bad results. In the end, you have to experience it carefully