Observing the level signal table passed between devices and checking and adjusting the observed results is more difficult for newcomers. But once you have mastered a few basic techniques, it will be a very useful tool for you. In general, audio workers will encounter three common levels of expression, the scene or recording common, the following figure shows the common signal strength chart. The smallest signal strength is the dynamic microphone, which is listed in the field with sE V3. The dynamic microphone is stronger than the dynamic microphone, but it is far less than the line level signal. It is a condenser microphone. Here is the double-tube condenser microphone sE GEMINI II; obviously in the signal level. Stronger is a lot of line-level signals, civil areas usually use -10 dBv signal level, strong out of a variety of original pickup equipment, but compared to professional audio field commonly used +4 dBu signal, the intensity is too small . 1. Mic level The output voltage of the microphone is small, and can range from 0.001v to 0.1v depending on the type of microphone. Some microphones have very low output voltages (such as moving coils and ribbons, see the Selection Guide for Practical Recording Microphones and Selection Guide for Practical Recording Microphones (bottom)). We need to give large gains at the later stage, such as 6, 70dB, so if your budget can not support Rupert Neve's signal amplifier, you can only buy Apogee sound card, because its mainstream audio interface can provide up to 75dB of gain, while ensuring the reference level of sound quality, which is the vast majority of the market It is impossible to do it with a sound card. Especially if the singer is a small-volume artist, the demand for the magnifier will further increase. On the other hand, if we place the microphone in front of the guitar speaker, we need less amplification. sE V3, V7 is a low-level microphone (dynamic microphone characteristics), but because of advanced technology, so better than some of the same type of microphone, although the RNR1 is aluminum ribbon microphone, but because of carrying the Neve transformer , so it is not difficult to enlarge Avantone's CV12, CK6, and CK7 are typical high-level output condenser microphones that provide more output voltage than conventional moving coils and aluminum ribbon microphones, so the pressure of the pre-stage signal amplifier will be reduced a lot. Sometimes we only need the most 30dB gain is enough. The reason is that due to phantom power, the condenser microphone can perform preliminary signal amplification inside the microphone. It is worth noting that the black lion version of the CV12 and the BLA has improved the sound quality after the hardware upgrades. The above information can tell us that if you want to use low-level microphones, they will be more difficult to pick guitars or mosquitoes when picking up a small volume of work, because most signal amplifiers can only provide 40 to 50 dB. The gain is not enough to achieve a good radio effect. Rupert Neve's rap words such as Shelford Channel or economical use of Apogee sound cards such as Duet and Element 24 are inevitable. In general, this level is relatively low and it is not enough to reach the line level standard to be discussed next. Therefore, the microphone signal must be converted to the line level through the amplifier before entering the audio device for processing. 2. Professional line level (+4dBu) Professional audio equipment typically transmits a +4dBu line-level signal. This is an early standard set by the industry. It allows us to connect any device of any brand through the same standard, +4dBu on the level meter. The value shown above is 0. It's worth noting that Symphony I/O already supports Soundgrid, so Symphony I/O is now available on Windows too. So when your CV12 BLA uses the +4 standard, then it can connect to the +4 standard RND 5017, and then further connect to the Apogee Duet set to the +4 standard, making a sound through the +4 standard Mix Cube. 3. Consumer line level (-10dBv) Consumption levels are common with civilian products and semi-professional products, using the -10dBv standard. Previously used CDs, MOGAMI cables that everyone sees with Lotus plugs and Sophora core plugs are the standard. Then the question is, what is the difference between -10 and +4? 14dB? Actually not. The difference between +4dBu and -10dBv is 11.78dB, which is caused by different level standards. So if you plug a -10dBv CD player into the +4dBu standard Symphony I/O, the signal will be about 12dB lower. Conversely, if the +4 signal is inserted in the -10 device, the signal will increase. Avantone Pro CV-12 If the +4 device output is connected to the -10 input, you can consider the attenuation of the front-end device, many devices such as microphones have a Pad button, in particular, Avantone's CV95 with Pad attenuation is exactly 10dB, very suitable for the next level Use if the device does not match. Of course, the difference in the voltage range between the +4 dBu professional signal and the -10 dBv civilian signal directly leads to the professional line signal level to provide a greater dynamic range, which is also an important reason for professional audio processing using such a high-level intensity signal. one. Connectors, cables and signals It doesn't matter... Types of connection terminals such as cassettes, juniors, lotuses, and small three-cores do not represent the final transmitted signal. Lines of XLR card headers can transmit Mic signals and can also transmit line signals. The same 1/4'' plug (second year, three-core) will also be used for guitar output and speaker input. The signal difference between the two is very large. Lotus plugs are commonly used to transmit video, and audio is more often used for digital signals or vinyl records. It must be remembered that even if two devices use a plug or a cable, it does not mean that they can be connected to each other. Is it very interesting? Understanding individual signal strengths is very helpful for professional audio work. Especially for today's devices, there are usually different signal level designs. We need to pay attention to the device description during installation and use! Zinc selenide/ZnSe window is an optical material with a wide spectral range and low absorptivity for infrared wavelengths and visible light transmission. Zinc Selenide ZnSe-CVD has a transmission range of 0.5 – 20 microns and is used for 10.6 microns high-power CO2 laser optics. It can be used as a protective optical window in FLIR (front looking infrared) thermal imaging equipment for medical and industrial applications. Znse Windows and Lens,Ir Znse Windows,Cvd Znse Lens,Laser Focus Lens Zoolied Inc. , https://www.zoolied.com
