Pa Sound System Includes A Broad Two Categories - Audio, Black, Electrical Knowledge - Hc Network

1. PA system:

1. PA system:

Speaker

Soon as the venue with the microphone in the same, there is room resonance caused by acoustic feedback and whistle, distortion and oscillation. To ensure system stability and normal operation, the maximum available system gain than the occurrence of acoustic feedback from the shock of the critical gain of the low 6dB.

2. Burst system: the system only tape drive, CD-ROM machine sound source, there is no microphone, no sound feedback possible, acoustic feedback coefficient is 0, is a special case of sound reinforcement system.

PA

Sound

System-use can be divided into the following categories:

1) outdoor sound reinforcement system

Outdoor sound reinforcement system is mainly used for the stadium, railway stations, parks, art squares, fountains and other music. Its service area is characterized by large area, space is broad, background noise; voice communication to direct sound-based; required high sound pressure level, if high-rise buildings around the reflective object such as sound, speaker layout it is not quite reasonable, sound waves through multiple reflections over the formation of more than 50ms delay will cause double or multiple acoustic sound, in severe cases echo problem, affecting the clarity of sound and image location. Outdoor sound system is also affected by weather conditions, wind direction and impact of environmental interference.

2) indoor sound reinforcement system

Indoor sound reinforcement system is the most widely used system, including various types of theaters, stadiums, dance halls and so on. It is very specialized, both non-verbal reinforcement, but also for the use of various types of theatrical performances, on the high quality requirements. System designed not only to consider the issue of electro-acoustic technology, but also issues related to architectural acoustics. Room shape on the sound quality and other factors have greater impact.

3) Touring System

In addition to the fixed installation sound reinforcement systems are mobile systems outside the system. Commonly used in various large venues [such as the stadium (Hall), art radio and large banquet hall] non-theatrical performance with the temporary installation of the system, said mobile performance systems. Mobile performance stereo equipment must be compact, easy to carry, transport and installation, high reliability and can adapt to the use of harsh environments. Large-scale flow system of the large investment, usually used to the professional audio rental company.

4) Public Broadcasting System

Public address system for the hotels, commercial buildings, ports, airports, subways, schools, background music and radio programs. In recent years, public broadcasting system also cater to emergency radio, fire alarm system with linkage. Public broadcasting system control functions more like electoral broadcast radio and full function call, forced switching function and the priority right to broadcast function. And scattered over the load speaker, transmission line length. To reduce transmission line loss, generally with 70V or 100V constant voltage high-impedance transmission. Sound pressure level required is not high quality to the sounds and alt-based.

5) Conference System

With domestic and international exchanges increase, in recent years, conference calls, video conference and digital conference system (DCN) has developed rapidly. Conferencing systems are widely used in conference centers, hotels, groups and government agencies.

Conference system including conference discussion system, voting system, simultaneous interpretation system and video conference system. Requested audio and video (image) system simultaneously, all using computer control and storage of session data.

by: gaga

POST COMMENT

Chic Clothing-affordable Sweaters For All Ages 100 Cases Of National Mandatory Product Certification Q & A - Bus Truck Wash Machine Why not purchase a car DVD player as a Christmas gift? Company Secretarial Audit What Your Company Needs To Know Cheap Mobile Phones: Advance handsets at affordable price Affordable Moving Boxes: Rent Alphard Car In Jakarta , Find Limousine Rental Car Turn Your Garage Into A Thing Of Beauty With Floor Paint Looking for the Appropriate Van Rental Services The recipe for the perfect broadband How line bonding could make your broadband faster Choose A Good And Affordable Hotel With Four Helpful Tips Cancun Vacation: A Very Well Deserved Getaway