A speaker is a transducer device that converts electrical signals into sound signals. The performance of the speaker has a great impact on the sound quality. The speaker is a weak device in audio equipment, but it is an important component for sound effects. There are many types of speakers, and the prices vary greatly. Audio power vibrates the cone or Membran genom elektromagnetiska, piezoelektriska eller elektrostatiska effekter och resonerar (resonerar) med den omgivande luften för att producera ljud . låga plasthögtalare har ingen ljudkvalitet på grund av sina tunna skåp och kan inte övervinna resonans; Trähögtalare minskar ljudfärgningen orsakad av skåpresonans, och ljudkvaliteten är i allmänhet bättre än plasthögtalare .
Funktioner hos väggmonterade högtalare
Usually, multimedia speakers are dual-unit two-way design, with a smaller speaker responsible for the output of mid-high frequencies and a larger speaker responsible for the output of mid-bass frequencies. When selecting speakers, the materials of the two speakers should be considered: the tweeter of multimedia active speakers is now mainly soft dome (in addition, there are titanium domes for analog sound sources, etc.), which can reduce the coldness of high-frequency signals when combined with digital sound sources. Multimedia speakers are now mostly made of soft domes such as silk membranes with better quality and PV membranes with lower cost. The bass unit determines the characteristics of the sound of the speaker, and it is relatively important to choose. The common ones are as follows: paper cones, glue-coated paper cones, paper-based wool cones, and compacted cones. The paper cone has a natural tone, is cheap, has good rigidity, is light in material, and has high sensitivity. The disadvantages are poor moisture resistance and difficulty in controlling consistency during manufacturing, but paper cones finns överallt i de ledande HIFI -systemen eftersom ljudutgången är mycket jämnt och har god reproducerbarhet .
Generally speaking, as long as the frequency response curve of the mid-range speaker is flat, the effective frequency response range is greater than the width of the sound band it bears in the system, and the impedance and sensitivity are consistent with the low-frequency unit, it can be used. Sometimes the power capacity of the mid-range is not enough, and you can also choose a mid-range with higher sensitivity and higher impedance than the bass unit, thereby reducing the actual input power of the mid-range unit. The mid-range unit generally has two types: cone and dome. It's just that its size and power handling are larger than the tweeter and it is suitable for playing mid-frequency sounds. The diaphragm of the midrange unit is mainly made of soft materials such as paper cone and silk membrane, and occasionally there are a small number of alloy dome diaphragms. As the name suggests, the tweeter is a speaker unit for reproducing high-frequency sounds. Its structural forms mainly include the trumpet type, cone type, dome type and aluminum ribbon type.
For various different speakers, the requirements for the quality factor of the low-frequency speaker, the Q0 value, are different. For closed boxes and reflex boxes, the Q0 value is generally better between 0.3 and 0.6. Generally speaking, the larger the caliber, magnet and voice coil diameter of the low-frequency Högtalare, desto bättre är den lågfrekventa uppspelningsprestanda och övergående egenskaper, och desto högre är känsligheten . Den strukturella formen av basenheten är mestadels kone-typ, och ett litet antal platt-typer är också tillgängliga . Det finns många typer av diafragmer för basenheter, inkluderande aluminuminum, diagram, aluminum, cerumm-magamor för basenheter, inkluderande aluminuminum, diakonum, aluminum, cerumm-magmor för basenheter, inkluderande aluminuminum, diakonum, aluminum, ceram-magmor, cerammam. diaphragms, carbon fiber diaphragms, bulletproof cloth diaphragms, glass fiber diaphragms, acrylic diaphragms, paper diaphragms, and so on. The bass unit with aluminum alloy diaphragm and glass fiber diaphragm generally has a smaller caliber and bears a larger power, while the bass unit with reinforced paper cone and glass fiber diaphragm has a Mer exakt ton när man spelar upp musik och har en bra total balans . olika faktorer som gör högtalarpriset bra.
Piezoelektrisk högtalare: En högtalare som fungerar genom att använda den omvända piezoelektriska effekten av piezoelektriska material kallas en piezoelektrisk högtalare . fenomenet som den dielektriska polariserar under tryck, som orsakar en potentiell skillnad mellan de två ändarna kallas den "piezoelektriska effekten" field will undergo elastic deformation, is called the "inverse piezoelectric effect" or "electrostriction". Compared with electric speakers, piezoelectric speakers do not require a magnetic circuit, and compared with electrostatic speakers, they do not require a bias voltage. They have a simple structure and are cheap. The disadvantage is that the distortion is Stora och operationen är instabil . jonhögtalare: Under normala förhållanden är molekylvikten för luft neutral och oladdad . Men efter högspänningsutsläpp blir det en laddad partikel . Detta fenomen kallas jonisering .} den air . Detta fenomen kallas jonisering .} den air . Detta fenomen kallas jonisering .} den air . Detta fenomen kallas jonisering .} den air är vibrerad med en volting till generation att generera löga loudate loudate loudate loudate loud essheat Waves . Detta är principen för jonhögtalare .