Record the correct sound method for audio applications

1, the hardware equipment is good or bad, most people's home equipment is mostly only three major parts: microphone, sound card, earphones, a few people will buy independent words, then these good or bad are you can control, as long as your economic conditions allow, Buying the highest quality equipment will directly affect the quality of the sound you record.
Then, in this part of the recording, which one is more important for the microphone, the microphone and the sound card? I personally think that the order of importance is: microphone > voice > sound card, because the microphone is the device that directly records your voice, the quality of the microphone directly affects the quality of the recorded sound, and the role of the voice is just the microphone The intensity and dynamic range of the output signal are amplified. Although the sounds of different models are different, the difference is not so big, and don't expect to buy a good one to make your broken microphone sound better. This is unrealistic. As the saying goes, it is also embarrassing to go out. You feel that the sound of your microphone is boring, so you bought one of the most powerful words in the world. Now, will the voice you enter be brighter? No, it will only become more boring, so when your budget is limited, put the main investment on the microphone, I believe that most of the people use USB sound card now, now USB sound card comes with their own words, As long as your microphone is good enough, the sound that is recorded with the sound card will not be bad.
Also mentioned is the directionality of the microphone. The directionality of the microphone may not be noticed by many people. In fact, this is a good solution to the environmental noise. Of course, the premise is that your environmental noise is emitted from a certain direction. For example, outside the window, you can let the back of your microphone face the source of noise. Most of the entry-level microphones are now heart-shaped, so it is difficult to receive the sound microphone from the back of the microphone. So you can record low-noise dry sound without any cost. In addition, it is a capacitor or a moving coil. Many people say that if your environment is not good, it is better to use a dynamic microphone. This is not unreasonable. But I think most people are recording in a small room like their bedroom or dormitory. Generally, this kind of environment will not produce obvious reflections. You can do a simple test and stand loudly in the place where you record. If you can hear a very obvious buzzing sound (this phenomenon is called a vibrating echo), then you'd better use the dynamic circle if you can hear it. Beep, but if it is not obvious, you can still use capacitors. After all, the sound quality of the capacitor is better, so choose the right microphone according to your own environment. I said that the microphone should be the most invested part, for example, you plan to use five thousand. Yuan changed a set of equipment, my suggestion is 2500 yuan microphone, 2000 sound card and 500 headphones. The above is the part of the microphone. I will list some microphones, sound cards and headphones with good quality and reasonable price.
Next, let's talk about the sound card. As I said above, most people use USB sound cards. Before buying a sound card, you must know what functions you need. Is it necessary to set up a rack to sing the scene? Still only recording? Need to have a DSP effect? Wait, if you want to sing the scene or need to record it, the sound card must be at least 4 in 4, such as Roland UA-55 is a very good choice, if you only record, then 2 in 2 out can meet you Needs, such as Steinberg UR22, hope that the sound card comes with EQ, compression, reverb and other effects, then Motu Microbook II may be able to satisfy you, in fact, the sound quality of the sound card below 2,000 yuan is almost no difference in the recording, more is the function The difference, so buy a sound card to see if the function can meet your needs, and then if your sound card comes with compression and restrictions, you must remember to turn off the recording, the other thing you need to pay attention to is the size of the sound card input level, This is the most important thing. I have received a lot of dry sounds. It is not too small or too big. It takes a minute to record. I will try to record the highest place of this song and ensure that the waveform of this highest place is not. Explosion is fine, don't hold it: the waveform is smaller, the noise is also small, if you have a small waveform, I have to enlarge when mixing, the result is the same, and the signal noise of the device
Next is the part of the headset. In fact, if it is a recording earphone, the first thing to ensure is that it does not leak, and it is comfortable to wear. I don’t recommend using earbuds. The sound of earphones is usually very inaccurate. Maybe some of your recordings. The problem can not be heard with earplugs, so it is recommended to buy a head-mounted monitor, other things like frequency response, as long as you don't be too outrageous, there are many headphones that can meet this requirement, and the price is cheap.
2, the posture of the recording each person has their own habits, some people are used to sitting and recording, some people are used to standing, I do not ask you to stand, say what the breath will be smoother, if you are not used to If you are standing still, you may not be able to accept the recording process in the most comfortable state, so you can stand still or sit down. You can follow your habits.
However, there is a problem that must be strictly required. The distance between the mouth and the microphone is less than 10 cm, which will cause the near-talk effect to increase the low-frequency response of the microphone. The recorded sound will be very stuffy, and another problem brought about by too close. That is, as long as you move your head a little back and forth, the sound changes will be obvious. This is difficult to repair in the later stage, so don't leave too close to the recording. As far as I personally record the experience, the mouth must be at least a fist from the microphone. This also depends on the style of the song you recorded. If you record a song like "Autumn", you need an ethereal sound, you can be a little farther away. If it is a song like Eason Chan, "Long time no see", You can get closer, but don't be less than the distance of a fist. If you are afraid that you can't control the distance, use a spray-proof cover to keep the spray-proof cover away from the front of the microphone. This will guarantee you. No, very boring sounds will be recorded.
Another point I haven't seen in other tutorials is the position of the microphone, because people are resonating when singing. If your microphone is in a high position, it will be recorded even above the mouth. More nasal and head cavity resonance, if the lower part, will record more chest resonance sound, this I personally experimented, I used to use two microphones to record vocals, a main microphone in the mouth is positive In front, another sub-microphone is placed on the chest to collect the sound of the chest resonance, and then adjust the level of the sound recorded by the sub-microphone to adjust the thickness of the sound. It is found that the sound recorded by this method is very thick and very Naturally, there is almost no need to add EQ, so the position of the microphone is high and low depending on what kind of sound you want to record. 3. Before the attitude problem, I saw a singer recording thousands of clips on Weibo. First of all, I admire his persistence and patience, but on the other hand, I personally think that if a song records so many clips, it should It’s not enough for this song. Generally speaking, it’s better not to record more than 2 hours for a song. If you can’t guarantee the song within 2 hours, it’s better to practice this song. And then record again, because the human voice belt also has its physical strength, you will fatigue it if you let it work for a long time, the problem is that you finally recorded in the state of vocal cord fatigue, it naturally can not record good sound. And another problem that may be brought about is that the tone of the first half and the second half is inconsistent. This is also difficult to correct later. The best solution is to start recording when you are familiar with the song you want to record. This way, your recording process will be smoother, the consistency of the recorded sounds will be better, and it will be convenient for post-processing, and you will be happy if you are happy.
4, format problems I believe that basically no one now does not know that the recording should be saved in wav format, but there are still many people do not know to save as mono, in fact, for vocals, mono and stereo in the later period There is no difference, but the volume of the stereo file is twice as large as the mono, and the increase in the size of this file is meaningless. Many people don’t know how to save it as mono, or sometimes it’s obvious in the software. Mono but the export becomes stereo. This mono or stereo setting will have a format setting when you export, there are options to choose from inside, another problem is that many people have recorded the dry sound now. The sampling rate is 44100, this sampling rate itself is no problem, but the industry's regular recording format is 24/48, which is 24bit, 48000 sampling rate, if you want to engrave the CD, then export to 16/441 (16bit, 44100) The relationship between sampling rate and frequency is: the sampling rate is twice the highest frequency that can be recorded, which means that if your project's sampling rate is set to 32000, then you only have the highest Recorded 16KHz sound, the sound beyond this frequency can not be recorded, so the higher the sampling rate, the more frequencies that can be recorded, the better the sound quality, if your sound card does not support, record 441, But it can't be lower than 441.

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