【 Weak current College 】 for the stage, singing the role of major equipment and---Power By 【 China power house network 】

For the stage, singing the role of major equipment and
1 mixer: enter with more than one channel, each channel voice can make a separate processing and have left and right channel, hybrid, listening, and so the output of a sound mixing equipment. Is a sound engineer, recording engineer and composers for the creation of music, sound, critical equipment. 2, power amplifier: connect the audio signal voltage is converted into fixed power signal used to drive speaker device. Amplifier power matching criterion is 1, the amplifier output impedance equal to load impedance loudspeakers. 2, power amplifier output power and speakers to match the nominal power. 3, divider: implement frequency circuit or device called a divider. Divider type vary, depending on its frequency signal waveform, a sinusoidal frequency and pulse frequency. Its basic function is, according to the requirements of the combo box will be full-band audio signal into different frequency band, enabling proper band loudspeaker unit stimulus signals that work optimally. 4, reverb: in the House sound system, a very important part is the voice of reverberation processing. One of the songs after the reverberation processing to produce an electronic sound aesthetic, the song with a charm. It can be some amateur singer voice in certain defects, such as Husky, guttural and sharp noise vocal noise through reverberation processing to hide sounds not so bad. In addition, the mixed sound can also compensate for the amateur singers because without specialized voice training and produce sound structure overtone phenomena are not rich. 5, diminutive: because people voice conditions vary, in singing while accompanying music tones requirements the inconsistencies, some people want lower, while others need to be higher. This will require accompaniment music tones should be adapted to the singer's requirements, or will find songs and accompaniment are very harmonious. If you use the accompaniment with the requirements for using tone sandhi. 6, effects: provides sound field effects, including reverb, delay, ECHO, and special handling to the sound device. 7 and limiter: is the compressor and limiter merged together. Its main role 1, protection, power amplifier and speaker (speaker) 2, the creation of special sound effects. 8. Equalizer: is on a different frequency for promotion, attenuation, adjusting bass, baritone, treble the proportion of the device. Its meaning is twofold. ①, on the audio device or carrier frequency response curve for the necessary compensation so that the output of the sound is distorted. ② and to the creation of the need for sound signals are processed to meet the listening requirements. 9, speakers and speaker: speaker is the electric signal into acoustic signal devices. According to the principle of distinction have electric, electromagnetic, piezoelectric ceramics electrostatic-and pneumatic. Speakers also called speaker box, is the speaker unit load device of the box, it is not a voice part, but the display and rich bass sound part of help. Generally can be divided into three types: closed-end speakers, phase-speaker, labyrinth speakers. 10. microphone: the microphone is the sound into an electrical signal by an electro-acoustic transducer devices. Is the audio system types up to a cell, press the directional to distinguish can be divided into non-directivity (circular), nature (heart, heart-shaped) and strong directional, non-directivity is specifically designed for the use of the band pick-up; directivity is used for voice, singing and other audio sources pickup; strong directivity is specialized in order to pick a certain orientation of the sound sources and to set the left and right sides and the rear of the microphone picks up sound in space, and designed to take advantage of Sonic's mutual interference principle, using Sonic interference tube produced a slender tube microphone, the microphone was known as the gun for the art scene and press interview; as to the structure and scope of application of the distinction between a moving coil microphone, aluminum with microphone, capacitive microphone, pressure zone microphone-PZM, electret microphone, microphone, MS stereo reverb MICS, diminutive microphone etc. CD1-3 type moving coil microphone is Beijing 797 factory production with distortion, crystal-clear voice clear, is one of the domestic excellent microphone. Now our people Town Hall, the Hall of the National Committee, and other important voice halls are using CD1-3 type microphone. There are home-made fine Mike CR1-3 type capacitor microphone, CR1-4 short gun type capacitor microphone, CR-701 type and CR-702-Lance capacitor microphone, CR1-5 is a two-way selection type of capacitor microphone, and so on.