Um alto-falante \u00e9 um dispositivo que restaura um sinal el\u00e9trico em um sinal sonoro, e a autenticidade da restaura\u00e7\u00e3o ser\u00e1 um crit\u00e9rio importante para avaliar o desempenho do alto-falante.<\/p>\n
De acordo com diferentes princ\u00edpios sonoros e estruturas internas, os alto-falantes podem ser divididos em v\u00e1rios tipos: invertidos, fechados, planos, de corneta, labirinto, etc. Os formatos mais importantes s\u00e3o fechados e invertidos.
\nO alto-falante fechado \u00e9 para instalar o alto-falante na caixa fechada e a efici\u00eancia \u00e9 relativamente baixa;
\nA diferen\u00e7a entre o alto-falante ventilado e o alto-falante com ventila\u00e7\u00e3o \u00e9 que ele possui um orif\u00edcio de ventila\u00e7\u00e3o circular no painel frontal ou traseiro. Ele funciona de acordo com o princ\u00edpio do ressonador de Helmholtz e possui as vantagens de alta sensibilidade, alta toler\u00e2ncia \u00e0 pot\u00eancia e ampla faixa din\u00e2mica. Como a onda sonora na parte traseira do alto-falante tamb\u00e9m \u00e9 liberada pelo orif\u00edcio guia de fase, sua efici\u00eancia tamb\u00e9m \u00e9 maior do que a de uma caixa herm\u00e9tica. Al\u00e9m disso, o mesmo alto-falante instalado em uma caixa inversora adequada ter\u00e1 uma press\u00e3o sonora 3 dB maior do que a press\u00e3o sonora de baixa frequ\u00eancia obtida em uma caixa fechada com o mesmo volume, o que \u00e9 ben\u00e9fico para o desempenho da parte de baixa frequ\u00eancia.<\/p>\n
Portanto, esta tamb\u00e9m \u00e9 uma raz\u00e3o importante pela qual a caixa inversora \u00e9 t\u00e3o popular.<\/p>","protected":false},"excerpt":{"rendered":"
A speaker is a device that restores an electrical signal to a sound signal, and the authenticity of the restoration 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