Microsoft Yahei Case Introduction: Microsoft Yahei Project Background Microsoft Yahei Civil Air Defense is referred to as Civil Defense (called Civil Defense in foreign countries). It is an important part of national defense, an important part of modern urban construction, and a social welfare undertaking that ensures social stability and people's safety. Huizhou Civil Air Defense is responsible for organizing publicity and education on civil air defense knowledge, guiding and supervising the popularization education and training of atomic, chemical and biological weapons prevention (referred to as the three defenses) in universities, middle schools and primary schools, and popularizing civil air defense knowledge and skills. and other responsibilities, as an important social welfare undertaking to ensure social stability and people's security. With the development and progress in recent years, Huizhou Civil Air Defense has built a new education and training center for daily organized training activities, civil air defense education and publicity. After the preliminary site information provided by the customer, Party A's use needs, and the initial investigation, research and plan design of Party A by the audio engineer, German Audio finally won the audio system of Huizhou Civil Air Defense Education and Training Center with its professional plan design and excellent product performance. Supply rights. Microsoft Yahei Microsoft Yahei project requirements Microsoft Yahei needs to meet the needs of human voice reinforcement for training, speeches, reports and other activities. It requires clear voice playback from slightly, clear details, and simple and stable system. Microsoft Yahei Microsoft Yahei Solution Microsoft Yahei slightly: As a new generation product of point sound source technology, it provides complete sound reinforcement technology, which can meet the high requirements of professional audio users. slightly also has the best ultimate sound quality performance in terms of compact and versatile use. The main advantage of coaxial technology is that the radiation of a single point sound source has excellent phase response characteristics. The speaker has complete wavefront coherence and axisymmetric directivity at all frequencies, producing exactly the same horizontal and vertical coverage angles, forming a true point sound source; Moreover, the coaxial design allows the low and high frequencies to have completely overlapping diffusion characteristics, avoiding the weakness of the typical polar lobe effect of the traditional combination of horn tweeters and low frequency speaker units. The final result is naturally to bring studio-level monitoring sound quality, ideal for near-field monitoring and fully suitable for semi-reverberation environment applications. Microsoft Yahei Microsoft Yahei Power Amplifier: The new power amplifier adopts a topology-like circuit and has high-efficiency power conversion. Green environmental protection is to convert the analog signal of audio into a digital signal and then amplify it, and put the amplification element of the amplifier like in a switching working state. When there is no signal input, the amplifier is in a cut-off state and does not consume electricity; When working, the transistor is put into a saturated state by the input signal. The transistor is equivalent to a turned on switch, which directly connects the power supply and the load and converts it into an output driving unit. This conversion efficiency is very high. We call this kind of amplification circuit called a class amplifier. Microsoft Yahei Microsoft Yahei Pre-processor: In order to avoid erroneous operation, the front panel of the device adopts a unique no-knob design, which uses dual-digit large numbers to display music, effects, and microphone volume. Microsoft Yahei For convenient operation, the front panel of the device includes: The,,,,,, and other tuning panels can directly refine the parameters through the buttons on the panel. Microsoft Yahei's unique two sets of effects meet different singing effect needs. Microsoft Yahei's unique single and double echo ping-pong effects. Microsoft Yahei level anti-howling and frequency shift can be adjusted, making singing more confident and easy. Microsoft Yahei drive-free communication method, plug-and-play, built-in software, and it is convenient to adjust parameters through the computer's tuning software; Microsoft Yahei fourth generation processor, sampling rate, conversion, bit chip processing; Microsoft Yahei input has dual-segment parameter equalization adjustable; music input has segment parameter equalization adjustable, reverb and echo effects have segment parameter adjustable; Microsoft Yahei music tone change, automatic ultra-low control, main output left and right delay, surround left and right delay, rear ultra-low delay, center ultra-low delay, music microphone noise gate and other functions; Microsoft Yahei has a sound channel sound field positioning function. Software can adjust the area of the room and the layout of the slightly, and can also set the output level of each channel; Microsoft Yahei personalized setting function limits the maximum volume, boot volume, and password protection functions; Microsoft Yahei Microsoft Yahei Conference System: Pure discussion conference system Microsoft Yahei's main control computer has passed national mandatory safety certification Microsoft Yahei uses all-digital high-fidelity circuit development and design Microsoft Yahei's conference system host and the conference unit uses eight-core dedicated signal line Microsoft Yahei system host uses LCD display, intuitive menu operation, user-friendly Microsoft Yahei stand-alone can realize conference functions: Free speech mode, rotation mode, restricted mode, chairman mode, Microsoft Yahei uses hand-in-hand connection. The connection method is simple and the line is simple. Microsoft Yahei has high-fidelity sound quality and automatic suppression of howling function. Microsoft Yahei can select the number of microphones that speak at the same time. Microsoft Yahei has function keys and knobs for equipment debugging. Microsoft Yahei's feedback and evaluation. Microsoft Yahei's entire audio system is simple and easy to operate, with good stability and low failure rate, which is deeply popular with Party A; The wiring design of the Microsoft Yahei conference system is reasonable, which avoids the waste of excess wires and saves wiring costs; the Microsoft Yahei slightly has excellent playback effect and is used for voice playback without pressure; the Microsoft Yahei after-sales service and technical support response is rapid and improved.