HVAC fittings named air conditioner fittings,produced according to the drawing.hvac fittings,hvac Copper Fittings,air conditioner copper fittings,refrigerator fittings,OEM copper fittings,copper tripod bends,copper u bends,evaporator fittings hvac fittings,hvac copper fittings,air conditioner copper fittings,refrigerator fittings,copper tripod bends,copper u bends,evaporator fittings,OEM copper fittings Taizhou Runde Company , https://www.zjcopperfittings.com
The earliest contact with the pickups was the transformation of the postal system in 2003. In many cases, some “current noise†will appear after the pickups are normally connected, which will seriously affect the quality of the sound. What is “current sound�
The noise that we see when we collect sound is usually divided into two categories: one is the environmental noise from the microphone; the other is the noise generated by the equipment.
Many users do not know the noise generated by the device as "current sound." The causes of “current sound†are relatively complex and its performance is not the same, but it is sometimes difficult to solve the problem by using “current sound†to describe the problem. Once you ask what kind of “current soundâ€, it is often the same for many users. There are different descriptions of the sound, such as describing a broken sound as a noise or harsh noise.
Some users mentioned the use of post-processing methods to remove the "current sound", in fact, "current sound" is very difficult to deal with through the software, even if it is processed, it may not be smashed into what kind of vocal!
Next we will remove the trouble for you and will teach you to easily solve the "current sound" of the pickup:
1, communicative sound
It is usually caused by equipment, line filtering, and poor shielding. The device shielding of the metal shell is better than the shielding of the plastic shell device.
Solution: Ground the device through the wire, replace the shielded wire, and use the equalizer to cut off audio below 60Hz.
2, sound
Solution: Usually due to poor audio cable shielding, shielded twisted pairs should be used with good shielding.
3, exchange noise
Usually caused by electromagnetic leakage near the amplifier, such as power adapters, power transformers, mains lines and so on.
Solution: Keep the amplifier away.
4, buzz
Due to the quality of equipment components, performance, circuit design, circuit board wiring, grounding points and other reasons, this problem is difficult for non-electric technicians to solve.
Solution: You can use the software to reduce the noise or eliminate the noise by the end of a certain improvement, or use high-end pickups.
5, line induction
Solution: Due to poor shielding of the above-mentioned more than one kind of noise mixed sound, a good shielded shield wire should be used.
6, cell phone interference
Someone was using a cell phone to talk in the vicinity during recording. The most serious interference occurred when dialing and ringing.
Solution: Remember not to put your phone near the recording equipment when recording.
7, display interference
This is due to the outward radiated noise of the line and field circuits of the display when it is operating.
Solution: Place the microphone and microphone away from the monitor.
8, display line frequency crosstalk
This kind of interference is different from “7â€. It is the line frequency signal of the monitor that goes directly to the graphics card through the display cable, and then to the motherboard and then into the sound card. It can't be solved by the microphone far away from the monitor. This problem is easy to appear in some anti-interference ability. On the poor sound card, it is not easy for this problem to appear on the sound card of the survey board.
Solution: Turn off the monitor power temporarily during recording.
9, host interference
This interference includes electromagnetic radiation noise generated when the host's power supply, motherboard, CPU, expansion slot hardware, etc. work.
Solution: Change the power supply or motherboard and other hardware. The investigation also found that the sound card provided on the motherboard is not prone to such problems. Since the motherboard and the sound card have been designed together, designers have considered the issue of mutual interference.
10, break the sound
Breaking the sound is not a noise, but some friends mistakenly believe that it is noise, so it is necessary to list it again, generally due to high gains in recording amplification, too close to the source of wheat and other reasons.
The solution method must:
1. Pickup audio signal transmission, can not use the video line, because the impedance does not match the reason, will produce noise, if you are short-distance transmission, then you can use pure copper cable or telephone line, transmission signal; if it is Long-distance transmission, it is necessary to use shielded audio cable, the line should be greater than 0.5, in theory, the thicker the line the better, but to consider the project cost.
2. There are a lot of people do not pay attention to, that is, the power supply of the pickup, use a 12V transformer or a power supply dedicated to the pickup, this can reduce the AC signal interference. With an ordinary 12V switching power supply, poor filtering results in large current noise. The best use of shielded wire joints, it will reduce the "current sound". If the project budget allows to use the dedicated power supply of the pickups as much as possible, the ordinary power adapter has no filtering function, and the special power supply for pickups has a very good filtering function, which can eliminate "current sound" to the greatest extent.
3. Use big brand pickups. Why do you need a large brand pickup? Very simple, the current pickup market is very chaotic, many small companies speculators, filling the product with the term "digital pickups." In fact, the effect is very poor. Try to use large brand pickups instead of blindly buying cheap equipment for cheaper.