Soundbox category
Disaggregated by field of use: two categories: professional and domestic。
By the frequency of the play: it can be divided into full-band soundboxes, basses and ** soundboxes。
By purpose: it can generally be divided into main soundboxes.*** and echoboxes。
Split by box structure: can be divided into sealed soundboxes, reverse soundboxes, maze soundboxes, acoustic tube soundboxes, multi-vibration soundboxes, etc。
Number of speaker units: 2. 0, 2. 1, 5. 1, etc。
The mass by box: wooden, plastic, metal, etc。
Main performance indicators for the loudspeaker system
1) frequency response (effective frequency range)
2. Qualitative resistance
3) power
4) sensitivity
5) directionality
6) falseness
Sound equipment should be equipped with the primary consideration: balance, together and coordinated at the overall technical functional level between the signal sources, amplifiers and the various parts of the stereo. Sale of stage sound prices
The frequency is used to separate the sound signals from the different bands, to be zoomed in and then replayed in the speaker in the corresponding band. When high-quality sound is replayed, electronic frequency processing is required。
The frequency is the "brain" in the soundbox, which is critical to the sound quality. The output music signal shall be processed through the filtering wave element in the frequency, allowing the unit-specific frequency signal to pass. Scientificly, rationally and carefully designed soundbox frequencies are necessary to effectively modify the different characteristics of the speakers ' units, optimize their combinations, keep them short, make their respective potentials fully operational, and smooth and symmetrically accurate the sound of the bands, so that the music produced by high, medium and low sound is clearly structured, integrated, clear, comfortable, broad and natural. Specialized stage sound in shaanxi, when performing national songs in the art stage, should also choose to pick up the sound with an electric microphone。
3. Select high sensitivity mic, which enhances the sound gain of the mic and allows the audience to gain sufficient noise. Outside performances tend to be far away from both the mic and the channel, so that the appropriate selection of wireless mic can be used to pick up the sound。
Protection of power lines: acoustic systems are sourced from grid circuits, and problems can arise if power circuits fail. So power circuits should be provided by local professional electricians. The entire circuit channel should be protected by specialized security personnel to the interior switch or temporary power vehicle。
V. Protection of speaker lines: the distance between outdoor performer power amplifiers and soundboxes is generally far away, and in order to prevent the breakout and short circuits from causing malfunctions and damage to the device, there is a need for a dedicated person to protect speaker circuits. The output resistance of the amplifier is very small, with only a few oms, but with very high acoustic power, so the current is larger, the line is not too long and the cut-off area is not too small to cause unnecessary acoustic power loss, which, if available, can be reduced by placing the power amplifier closer to the soundbox。
Vi. Sounders are required to maintain contact with the acoustic assistants through the walkie-talkies, so that they can have more accurate and timely access to the sound effects of the acoustics so that adjustments can be made in a timely manner。
Incentives are a harmonic generator, which uses the psychological acoustic characteristics of a human being to modify and glorify sound signals. A variety of methods, such as adding high frequency (hf) to sound, can improve sound quality, sound colour, sound penetration, and the spatial sense of sound. Modern stimulators not only create high frequency (hf) waves, but also have low frequency extension and music style features, making the bass more perfect and the music more performing。
Incentives
Increase the volume of sound: significantly increase the hearing of the sound, the stereotic sense of the sound image, and the isolation of the sound。
Increased sound penetration: the use of motivations increases the sound's clarity, understanding and performance, increases the penetration of the sound and makes it more instantaneous. Based on increased sound intensity, the use of incentives can also effectively reduce hearing fatigue。
Increase the spatial and stereo sense of sound: the use of a stimulator increases the transistor of sound, and a stimulator with a low frequency extension improves sound quality. Incentives have led to significant improvements in the frequency range, dynamic range and sound level of the sound, improved positioning and hierarchy of the sound, increased spatial and stereo sense of the sound, and thus improved the sound quality of the replaying of the sound. In the multi-function hall sound amplification system, it can be divided into two parts: the conference system and the loudspeaker system。
Balancer adjustment method
** sound balancer 2231 20hz-40hz, with a strong voice when appropriate. It controls the sound of thunder, the bass drum, the organ and the bass. Over-upgrading can confuse music。
The bass 40hz-150hz is the foundation of the sound, with an energy of 70 per cent of the total audio energy and an important component of the musical style. When appropriate, the bass is smooth, the sound is soft, the sound is thin when it is short, 150 hz is too high to smother the sound, the brightness falls and the nose is enhanced。
Medium bass 150 hz-500 hz, which is part of the structure of the sound, is where the voice is located, and when it is insufficient, the sound will be drowned by music, the sound will be soft and weak, and the sound will feel strong and loud when it is properly raised. Over-upgrading causes the bass to be hardened, and over-uplifting 3-6db at 300 hz, which, when combined with mixing, can seriously affect the clarity of the sound。
Middle 500 hz-2khz, which contains low-intensity waves and transistors for most instruments, is the characteristic sound of small military drums and instruments of strike. When appropriate, the sound is loud and bright, and when it is not, it is loud。
2khz-5khz, medium high, is the character of the string (things of the bows and strings of the string, the fingers of the extraction). The penetration of the sound drops when insufficient, and the recognition of the syllable is shielded when too strong。
Acoustic 7khz-8khz is the frequency that influences the sound hierarchy. Over-upgraded flutes, flute sounds, accents in the language and sound hair。
A very high sound balancer of 8khz-10khz, with high metallic penetration of the triangle when appropriate, and a clear rhythm of the sand clock. There are three factors that affect the sound pressure level: sensitivity of the speaker, input power and distance. Sale of stage sound prices
(c) bassy system equipment connection sequences: the tuning table (1-2 grouping) zero-system-system-system-system-system-system. Sale of stage sound prices
The question-of-use sound technology sub-frequency is a sound device that can divide sound signals into several bands. We know that the frequency range of sound is between 20 hz-20 khz, and it is difficult to hope that the use of a loudspeaker* will guarantee a wide frequency like 20 hz-20khz because of the technical problems and difficulties. As a result, in general, high-quality loudspeaker systems, in order to ensure the frequency response and bandwidth of the re-emergence of the sound, are used mostly in the professional context in high-low-separation soundboxes, whereas the use of high-low-low-segregated sound-distribution soundboxes necessitates the use of frequency-severals. Sale of stage sound prices
Shanghai city voice technology, inc., with a strong background, credibility, excellence, vision and vision of the future, is a well-organized company that is committed to leading its staff on a bright future, has worked together to draw a blueprint, has accumulated a great number of loyal clients in the construction and construction industries, such as shanghai city, has reaped a good user reputation, has laid a good business foundation for company development, and hopes that the future company will be able to make its own contribution to the development of the industry. **** we believe in a spirit of excellence and continuous improvement of innovation and self-restraint, and that a committed corporate spirit ** of sound science and technology in shanghai and you will work together to achieve excellence and excellence
