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专业音响技能及规范

来源:http://www.axznjj.com/news/245.html发布时间:2018-10-16

专业音响技能及规范
Professional sound skills and specifications
学习专业音响工程技能首先有必要认识了解有关的技能术语和相关的一些国家及行业规范,只要这样专业的规划和施工才干做到有的放矢,工程的质量才干得到充沛的确保。能够进一步讲,一切和工程有关的专业规范和术语是工程作业的根底,是规划施工的根据和参照,是中心。下面就列出一些有必要认真学习了解的术语和规范。
To learn professional audio engineering skills, first of all, it is necessary to understand the relevant technical terms and relevant national and industrial standards. Only in this way can the professional planning and construction be targeted, and the quality of the project can be fully assured. It can be further said that all engineering-related professional norms and terminology is the foundation of Engineering operations, planning and construction of the basis and reference is the center. Here are some terms and specifications that need to be seriously learned.
声压级:指实践声压和基准声压之比的20倍对数值,单位是分贝。这是它的数学表达式。它的重要性就在于:一切的音响体系的发声状况,一切的扩声场所的声学质量,都需求有这项目标,在后面的规划核算中它仍是一个核算基准。

Sound pressure level: 20 times the value of the ratio of the practical sound pressure to the reference sound pressure, and the unit is decibel. This is its mathematical expression. Its importance lies in: all the sound system, all the sound amplification of the acoustic quality of the place, all need to have this goal, in the later planning and accounting it is still a benchmark.

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混响时刻:指在一个稳定的声响信号俄然中断后,厅堂内的声压级下跌60dB所需求的时刻,单位是秒。它的数学表达式如下。能够发现,混响时刻是和修建装修的结构和资料密切相关的参数。在实践的工程中,混响时刻更是厅堂修建声学效果的重要考证目标。
Reverberation time: The time required for a sound pressure level to drop 60 dB in a hall in seconds after a steady sound signal is suddenly interrupted. Its mathematical expression is as follows. It can be found that the reverberation time is closely related to the structure and data of the fitment. In practical engineering, reverberation time is an important research target for the acoustics effect of the hall.
扩声功率:指到达体系规划的额外扩声声压级时,扩声设备所需的额外功率,单位是瓦。这个参数在实践的音响调控中并不十分重要,但是在音响体系的规划和选型时,它却是声学目标在电声参数上的直接表现,并且它将关系到工程的终究造价,所以也特别重要。一般在工程中,它主要靠音箱的额外功率来反映。
Sound reinforcement power: refers to the additional power required by the sound reinforcement equipment, in watts, when reaching the additional sound reinforcement pressure level planned by the system. This parameter is not very important in practical acoustical regulation, but it is the direct representation of acoustical target in acoustical parameters in the planning and selection of acoustical system, and it will be related to the final cost of engineering, so it is particularly important. Generally, in engineering, it is mainly reflected by the additional power of speakers.
国标GB-3947,是专业的声学名词术语的解释:国标GB-4959,是厅堂扩声特性的测量方法;GYJ-25,是厅堂扩声体系的声学特性目标。它们是两个重要的国家规范,简直一切的工程在规划、施工、检验时都需求把它们作为根据;国标GB/T14218-93,是电子调光设备性能参数与测量方法;SJ2112-82,是厅堂扩声体系设备互联的优选电气配接值。这两个规范在设备的选型和工程测验检验中能起到重要的效果。
GB-3947 is a professional interpretation of acoustic terms: GB-4959 is the measurement method of hall sound reinforcement characteristics; GYJ-25 is the acoustic characteristics of hall sound reinforcement system objectives. They are two important national codes, and almost all projects require them as a basis for planning, construction, and inspection; GB / T14218-93 is the performance parameters and measurement method of electronic dimming equipment; SJ2112-82 is the preferred electrical connection value for the interconnection of hall sound reinforcement system equipment. These two specifications can play an important role in equipment selection and engineering test.
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