Sam rap hat tai gia
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Mot phong khach tuom tat, hien dai khong the thieu mot "rap hat gia dinh" (home theatre). Mot phan de dap ung nhung nhu cau giai tri tai gia nhu xem phim, nghe nhac, hat karaoke... nhung phan khac, quan trong hon, hinh thuc cua chung gop phan trang tri de lam cho phong khach tro nen sang trong, tien nghi.
Dung ve goc do trang tri, nhung rap hat gia dinh hien tai khong con su dung nhung bo loa cong kenh, nhung chiec ti vi man hinh CRT day com va nhung bo khuech am, tron am nang ne tho kech. Voi ti vi, uu tien lua chon la nhung loai ti vi man hinh mong nhu plasma, LCD hoac DLP. Cac bo loa duoc su dung pho bien van la he thong loa 5.1, bao gom mot loa sieu tram (subwoofer), mot loa giua, hai loa truoc va hai loa surround (loa phu cho am thanh vom phia sau). Thi truong hien cung khong hiem nhung he thong loa 7.1, 9.1. Hien tai, cac loai loa nay duoc thiet ke thanh manh hon, mot so loa nhu loa trung tam, loa surround duoc thiet ke uu tien cho chieu cao de phu hop khi dung chung voi cac man hinh ti vi mong, kich thuoc lon. Cac loai loa go duong nhu chi con hop voi dan choi am thanh chuyen nghiep, cac loai loa hien tai co vo va chan duoc lam bang hoac ket hop nhieu chat lieu khac nhau nhu go, kim loai va ca bang thuy tinh. Trong phan lon cac he thong rap hat gia dinh hien nay, bo phan ampli cung thuong da duoc tich hop vao trong loa sieu tram.
Mot so he thong rap hat gia dinh hien dai con co the giao tiep truc tiep voi cac thiet bi giai tri ky thuat so ca nhan nhu may nghe nhac MP3, MP4 de phat am thanh hinh anh tu cac thiet bi nay ra he thong loa, man hinh tivi... Ky thuat ket noi khong day giua he thong loa voi cac thiet bi dau doc, ti vi... cung da duoc mot so hang nhu LG, Sony dua vao ung dung de giup cho nguoi su dung co duoc nhung tien nghi, de dang nhat dinh trong viec bo tri he thong von kha ruom ra va phuc tap nay. Doi voi viec luoc bo nhung day nho ruom ra, dac biet la nhung day dan am thanh co the lam mat cong suat neu khong biet chon loai phu hop.
(Theo Sai Gon Tiep Thi) |
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Viet Bao (Theo-Ngoisao)
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Hau het nhung hang dien tu lon tren thi truong nhu Panasonic, Sony, Samsung, LG, Pioneer, Sanyo... deu lien tuc tung ra thi truong nhung he thong rap hat gia dinh voi hang loat nhung thay doi ve thiet ke, tinh nang.
Tinh nang, ky thuat cua he thong rap hat gia dinh hien da co nhieu thay doi so voi mot vai nam truoc. Truoc het la kha nang gia lap am thanh. Nhung bo vi xu ly, mach ky thuat so da co the giup cho nguoi nghe co the nghe duoc am thanh 5.1 voi cac loai dia thu am thanh stereo, surround the he cu. Ke do la kha nang tuong thich voi moi loai dia cua dau doc, ngoai kha nang co the doc duoc cac loai dia pho bien, chung con phai doc duoc cac dinh dang moi nhat hien nay nhu DVD-RW/-R, DVD+RW/+R , DVD text va ca nhung dia nhac MP3, MP4, DivX... Mot so dau doc, nhu cua Samsung, Ascen con co kha nang giao tiep truc tiep voi cac o cung di dong, voi the nho cua cac thiet bi ky thuat so khac nhu may quay phim, chup hinh ky thuat so...