Currently, the software still cannot completely separate it. One way is to remove the vocals, then no one will sing, and the effect is not very good. The second method:

Three. 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 can actually be said to be very simple, but you still need to put in some effort to make it perfect.

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 results, just using the "Eliminate Original Singer" menu function of Cool Edit Pro 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"), and select "Presets" Vocal Cut" 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 all sounds (including vocals and part of the accompaniment) whose sound image is in the center of the sound field. Therefore, the main thing to use this function is to look at the source of the accompaniment and whether there are musical instruments and vocals placed in the center of the sound field before mixing. If there are, using this function will eliminate them, resulting in attenuation of the sound quality. For example, generally the sound field placed in the center includes "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. In this way, the human voice will not be eliminated and the accompaniment music will be eliminated, which is really depressing

Okay, let’s try out your results! Listen very carefully and you will notice that the accompaniment sounds different from the original soundtrack. The original singer's voice in the accompaniment tape has become very "virtual", but the original singer's voice can still be vaguely heard. In fact, this is the so-called silencing effect (it is absolutely impossible to eliminate the original singer)

. 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 haha. 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 to 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..." "Shrink"), select "Vocal Cut" in "Presets". Previously we dealt with the default values, now we try to adjust the various 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 "dry", but The sound field becomes wider and the three-dimensional effect is enhanced, but the low frequencies are reduced more. Maybe this effect is more suitable for some songs, but it is not very effective for some songs. You still have to debug it slowly and carefully when processing. If this method is not good for the songs you want to process, naturally keep the default. set up.

Under the default settings, this dialog box is already in a state to eliminate the original sound to the greatest extent, so if you want to eliminate the original sound more cleanly, there is basically no way here. I personally find 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 Remix" 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 vocals 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).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, the clean breath and sibilance have not been eliminated. . 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" → "Parametric 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 much more intuitive and easier than the "parametric equalizer" . Here I use the "parametric equalizer" to eliminate the "sizzling" 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 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 sibilant sounds are mainly above 6000Hz - 18000Hz. They can also be attenuated according to the actual situation, but the clarity of the accompaniment will be lost. The equalizer is generally used for repair and optimization. To eliminate the human voice, you have to go to "Effect" → "Waveform Amplitude" → "Channel Remix". Don’t forget to save when you’re done here!

3． Stereo effect enhancement

Stereo effect enhancement is a relatively professional processing method. Since it cannot be fully written out at the moment, I will only briefly talk about the stereo enhancement method. You can use stereo effect enhancement plug-ins (such as: WAVES Plug-in effect equipment is a good processing plug-in, I will not introduce it one by one here) or use professional stereo enhancement software to make appropriate adjustments, and you can also add some reverberation effects appropriately.

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 the low frequency, you can use Cool Edit Pro's "Equalizer" here, but do not use this file that has been "eliminated" because its low-frequency effect has been attenuated. If you perform gain processing, the effect will definitely not have the original soundtrack. Okay, so we're working with the soundtrack. Take out the low-frequency part of the original soundtrack as 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 is not necessary. As long as your voice covers the original song when you sing, it's fine. In this way, the effect of the accompaniment tape can be guaranteed, and the sound of the original singer will not be too obvious.