tailieunhanh - Graphic Equaliser

Tài liệu tham khảo về Mạch lọc trong âm ly bằng tiếng Anh. Equalizer (EQ) là một thiết bị âm thanh chính, chuyên dùng để điều chỉnh âm sắc. Phần tone trên các thiết bị pre-amp khác cũng là một dạng equalizer đơn giản. Thông dụng và pro hiện nay là EQ 2031 gồm có 2 x 31 bands cho mọi giải tần nghe được từ 20 đến 18 KHz. Thông thường là Graphic EQ, cao cấp hơn là loại Digital EQ (có thể giao tiếp với PC qua cổng COM) | EH PROJECT-- GRAPHIC GRAPHIC EQUALIZERS are popular with both the professional and domestic user alike. However until the presentation of our earlier equalizer ETI 427 the cost of such a device was very high and this limited its wide use. We have now redesigned the equalizer to simplify the construction and it now has no coils and one additional filter has also been added. available cannot give correct reproduction in an inadequate room. It is a sad fact that very few rooms are ideal and most of us put up with resonances and dips convinced that this is something we have to live with. Whilst the octave equalizer will not completely overcome such problems it is possible to minimize some non- particular system. One adjusts the equalizer to provide a uniform response the settings of the potentiometer knobs then graphically display the areas where the speaker etc is deficient. There is a snag however one must have an educated ear in order to properly equalize a system to a flat response. It is not much use equalizing to your own preference of peaky bass Itvti LEFT CHM -----BOOST- ffléHTC ------ OOS1 tim w w L---- Ị 1 ----r ---------------- . 10 - . - ------------ 7- I . -. I r . . . - . . . . . _ - .-. . .. -. . . .1 . . w iUpiii Mi in I I. 1111 111 1 I - - . . . Í .---- ----- . -------- . ÍQ u . i --- ---------- It - ft I w I OtKUK i w S fan lEÒtl h ift SÍ3 Ỉ4-S CUT t W- CiỊỊỊRÍ FREQUEHCr ijp------c UT ---------------4 ctom . CUT tim