Thứ Bảy, ngày 04 tháng 6 năm 2011

Sound Card USB - Bo 3 dang cap

Sound Card USB - Bo 3 dang cap
Nho gon, tich hop ca mot dan cong nghe hien dai ben trong, 3 san pham cua ASUS, Creative va Onkyo chinh la giai phap tot cho nhu cau giai tri cao cap cua ban.
Danh tu cac am thanh (Sound card) tu lau da tro nen rat quen thuoc voi nguoi su dung may vi tinh Viet nam cung nhu the gioi ngay nay. Hien tai co 2 hinh thuc sound card duoc su dung pho bien la loai tich hop san tren bo mach chu (onboard) va card am thanh roi su dung giao tiep PCI hay gan ngoai thong qua giao tiep USB. Card am thanh su dung giao tiep USB con kha moi me doi voi thi truong may vi tinh Viet Nam do co gia thanh tuong doi cao va khong co nhieu lua chon cho nguoi tieu dung, duy nhat chi co thuong hieu Creative trong vai nam qua doc chiem vi tri nay.
Bai viet nay se gioi thieu den cac ban 3 mau card am thanh su dung giao tiep USB dang cap cao voi chat luong trinh dien va tinh nang manh me: Creative EMU 0404, ASUS Xonar U1 va Onkyo SE-U33GX.
ASUS Xonar U1:
Sound Card USB

Con kha moi me khi buoc chan vao thi truong cac am thanh cho may vi tinh, ASUS-Viet Nam kha de dat khi gioi thieu series sound card Xonar gom 3 san pham chinh la : Xonar D2, Xonar D2X va Xonar U1 USB voi tieu chi tan huong khong gian giai tri voi am thanh trung thuc, loi cuon den bat ngo.
Thiet ke an tuong:
Xonar U1 USB co tat ca la 6 mau thoi trang rat dep de nguoi tieu dung co the lua chon: vang, xanh lam, do, xam long chuot, anh kim va trang sua. Thiet ke cua san pham nho nhan co hinh dang kha ngo nghinh gom 2 hinh non duoc up vao nhau. Hinh non ben tren co 1 den led dung bao nguon, no se chop tat lien tuc khi ban ket noi vao chiec may chu khi khong co driver. No se chuyen sang xanh va chop tat mot cach cham chap khi enable va chuyen sang do khi ban cho no o che do Mute. Ban co the bat tat che do nay thong qua trinh Audio Center hoac chi don gian la an nhe phan non phia tren xuong. Ben duoi la ket cau nut an bat tat nguon va xoay tang giam volume kha nhay, do khong co gioi han min va max nen doi luc cung gay ra su bat tien cho viec su dung. Tuy nhien, khi chua cai trinh dieu khien cho san pham, chuc nang tang giam am luong bang cach xoay khong co tac dung.
Ben trong hinh non ben duoi, la bo xu ly am thanh cua Xonar U1 co chip xu ly ASUS UA100 voi engine Xear 3D ho tro cong nghe DirectSound 3D, EAX 2.0, Dolby Headphone, Dolby Virtual Speaker, Dolby Pro-Logic IIx, va Dolby Digital Live; voi ngo xuat am thanh analog 48KHz va muc dao dong am thanh 100 dB. Dac biet, card am thanh nay co su dung mach nang tieng (Head Amp) khi su dung Headphone de nghe nhac.
Sound Card USB
Thong so ky thuat:
- Tin hieu phat tang so cuc dai (A-Weighted): 100 dB.
- Do meo tiengTHD+N at 1kHz (A-Weighted): 0.0045% (87 dB) (-60dB, A-Weighted) 96 dB.
- Do dong: 96 dB.
- Tin hieu am thanh duoc xu li: 48 KHz.
- Thu am (10Kohms, 1KHz) -104 dB.
Mach nang tieng:
- THD+N< 0.005% @ 47 mW x2/ 32ohms.
- THD+N< 0.006% @88 mW x2/16ohms.
- 96 dB SNR >1.1Vrms full-scale output voltage for >8 ohms load.
- Frequency response (-3dB/48KHz): 20~20 KHz for 32 ohms (headphones with 8~150 ohm @ >10mWx2 recommended).
Xonar U1 chu yeu phuc vu cho nhu cau di dong (Laptop) nen cac giao tiep chi dung o muc toi thieu la 1 cong xuat tin hieu (line out) 3.5 mm va 1 cong cho Mic (Microphone in). Ngoai ra, phu kien di kem con co dau chuyen sang S/PDIF, 1 Microphone kha thoi trang va tien dung duoc thiet ke cung tong voi Xonar U1.
Creative E-MU 0404 USB:
Sound Card USB

Co tham nien o thi truong Viet Nam cung nhu tren the gioi kha lau, Creative luon gioi thieu nhung san pham chat luong nhat cua minh de tay khach hang. Phan khuc thi truong card am thanh cua hang kha da dang va phu hop cho nhieu nhu cau: nghe nhac, choi game va thu am chuyen nghiep. Trong gioi Audio chuyen nghiep, chan chan ai cung tung duoc nghe den cai ten Creative EMU- card am thanh chuyen xu li am thanh chat luong cao. San pham duoc gioi thieu trong bai viet nay la SE-EMU 0404 USB.
Thiet ke gian di:
San pham E-MU 0404 USB co thiet ke hinh hop vuong, kha to va co mau xanh den rat chuyen nghiep. Ben tren mat meca trong bao ve la nhung num xoay va cac nut an. Do thiet ke lien quan den thu am nen hau het cac nut, num xoay deu phuc vu cho viec nay, ngoai tru volume chinh va Volume cua mach nang tieng cho headphone (Head Amp). Cac den led hien thi cac muc chinh rat chi tiet, ta co the thay duoc viec thu kha phuc tap. Cac giao tiep cua card deu duoc bo tri o mat truoc, dang sau thi co them cong tac nguon.
Sound Card USB
Thong so ky thuat:
- Bo chuyen doi 24-bit/192kHz A/D va D/A toi uu (A/D: 113dB SNR, D/A: 117dB SNR) cho am thanh trung thuc chua tung co.
-  E-MU XTCTM Am li Mic/Line/Hi-Z loai A, do on cuc thap (-127dB EIN) voi cong suat ao 48V, co the cam vao microphone, ban phim va guitar thang vao may tinh cua ban voi ket qua tuyet voi, trong khi mach han che tuong tu tich hop cho phep ban ghi lai nhung tin hieu "nong" ma khong phai ban tam den chat luong am thanh.
- Dau vao/ra so toan dien voi S/PDIF quang hoac dong truc (co the chuyen dang AES/EBU) va dau vao/ra MIDI de dang ket noi toi tat va cac nhac cu so cua ban.
-  Driver USB 2.0 giup ban dinh gio va choi mot cach chinh xac cac nhac cu phan mem va cac audio da ghi.
- Kiem soat truc tiep phan cung (mono/stereo) giup ban ghi lai va long tieng va khong bi tri hoan.
- Hoat dong cam-va-choi (Plug-and-Play), chuc nang dieu khien chuc nang chuyen nghiep, truc tiep kiem, dieu khien am li va nhieu chuc nang khac.
- Tuong thich voi cac ung dung audio - Ho tro ASIO2, WDM, MME, AC3 and DTS Passthru.
Mach su dung trong E-MU 0404 duoc thiet ke theo class A su dung 1 chip Creative CAO188-1BG LF, la bo chuyen doi am thanh 24bit/192kHZ co tan so 113 dB-117 dB SNR hua hen cho am thanh trung thuc. DAC su dung cho xuat am la loai AKM AK4113VF cua AKM Semiconductor-1, hang chuyen san xuat cac loai DAC su dung trong mach Amp chuyen nghiep kha noi tieng co thong so 24 bit - 192 kHZ 6.1 Ngoai ra, san pham con su dung 2 DAC AKM4396 cho mach nang tieng headphone va AKM5385AVF cho duong thu am cung co thong so 24 bit - 192 kHz. Opamp duoc su dung hau het trong mach la loai JRC2068 duoc su dung nhieu trong cac dong Ampli Hi-Fi, dac biet Opamp danh cho Head Amp la loai JRC2114. Tu dien loc nguon chuyen dung cua hang GN va G-lux co do tin cay cao, ngoai ra con co cac ro-le chuyen dung.
Phan mem di kem bao gom trinh dieu khien, cac phan mem chuyen dung cho viec thu am rat nhieu, tai lieu huong dan chit tiet:
• Cakewalk SONAR LE - Tao Audio/MIDI.
• Steinberg Cubase LE - Tao Audio/MIDI.
• Ableton Live Lite 4 cho cac he thong E-MU - Tao Audio/MIDI.
• Steinberg WaveLab Lite - Trinh chinh sua.
• IK Multimedia Amplitube LE - Guitar Amp va FX Modeling Plug-In.
• SFX Machine LT - Audio Multi-effects Plug-in.
• E-MU Proteus VX - Software Sound Module.
Onkyo SE-U33GX USB:
Sound Card USB

Onkyo, mot hang chuyen san xuat cac thiet bi am thanh trinh dien cao cua Nhat khong con xa la gi doi voi thi truong am thanh dan dung Viet Nam. Cac san pham cua hang trai rong sang nhieu mang, trong do noi tieng van la dau Amply ky thuat so va loa (Speaker). Tu thanh cong do, hang cung bat dau lan san sang cac thiet bi nghe nhac cua may vi tinh (PC) va co nhieu san pham chat luong nhu dong card am thanh Onkyo SE-xxx PCI ma dan ghien am thanh (Audiophile) luon cat cong di tim de trang bi cho bo may cua minh. Khong chi co card am thanh su dung giao tiep PCI, hang con cho ra doi cac loai thiet bi di dong trinh dien cao qua giao tiep USB, va san pham duoc gioi thieu trong bai viet nay la Onkyo SE-U33GX USB.
Thiet ke chan phuong:
San pham co mau trang bang nhua voi thiet ke don gian nhung van tinh te, do la 1 hinh hop chu nhat duoc vat canh lon. Ben tren co 1 den led xanh duong bao nguon, canh truoc la cac giao tiep Headphone, mic loai 3.5 mm va num xoay chinh volume cho headphone va am luong tong the. Dang sau la giao tiep RCA xuat/nhap va cong ket noi USB. San pham khong su dung nguon rieng ma cung cap dien thong qua giao tiep USB - kha thuan tien cho viec su dung moi luc moi noi.
Thong so ky thuat:
Onkyo SE-U33GX su dung bo chuyen doi 24 bit - 96 kHz, co do dong 110db 0.3Hz~44kHz(LINE OUT,+0/-0.5dB) nen cho am thanh trung thuc moc mac. DAC su dung la loai WM8716SEDS cua hang Wolfson Microelectronics co thong so 24 bit - 192 kHz, loai DAC chuyen su dung trong cac dau CD, DVD... gia dinh chat luong Hi-Fi. Tu dien loc nguon chuyen dung cho am thanh da so la dang the ran co do ben cao. OPAMP su dung la loai JRC2115 cho mach nang tieng headphone( Head Amp) va JRC4565 cho am thanh tong the. Dac biet card am thanh nay khong can su dung driver, tat ca chi la cam va chay.
Thu nghiem:
3 card am thanh gioi thieu trong bai nay duoc thu nghiem tren giao dien Window XP-Professional pacth 2. Su dung driver di kem thiet bi. Cai bai nhac su dung de thu nghiem duoc nen o chat luong cao 192 Kbps tu album goc nham so sanh va phat hien chat rieng cua 3 san pham rieng.
ASUS Xonar U1 USB:
Sound Card USB

Giao dien dieu khien cua thiet bi kha truc quan va dep mat, nguoi su dung co the de dang tinh chinh nhung thong so, cung nhu nhung hieu ung di kem sao cho ung y nhat.
Tuy chi thuan tuy la card am thanh ho tro headphone, nhung trong che do DSP mode, nha san xuat da bien stereo thong thuong thanh hieu ung am thanh vong o che do 7.1 Virtual Speaker. Nhu vay, khi su dung san pham voi 1 headphone chat luong kha nguoi su dung se co cam giac nhu dang ngoi truoc 1 he thong loa vom 7.1 voi day du nhung cong nghe Sourround nhu Dolby Pro Logic IIx, Dolby Digital, EAX 2.0.
Che do Array Mic la tinh nang khu nhieu va tieng on, se kha hieu qua khi ban su dung cung chiec mic di kem, khi duoc kich hoat Array Mic, mot vung am voi goc 120 do duoc dinh vi, va bo xu ly se can cu theo tung muc am, voi tieng on co day am tan tu 15 Db toi 20 Db se duoc khu nhieu mang lai cho ban tieng noi trong treo, tranh duoc tinh trang vong am va lap am thuong thay.
Sound Card USB

Co the noi am nhac duoc phat ra tu chiec non nho be nay nghe rat gan gui, khong that su chi tiet nhung lai rat thanh thoat dinh dat trong cach the hien, dieu nay chi co the thay o nhung card am thanh gia hon 100 USD. Album Not too late 2007 cua ca sy nhac jazz Norah Jones co 2 bai nguoi viet rat thich la Sinkin Soon va Little room, qua Xonar U1 nguoi viet co cam giac quen thuoc nhu khi dang thuong thuc no o bo dan dan dung Pionner cua minh. Tieng treble khong that su chi tiet nhung tieng bass kha hay, tuong doi sau va rong khong the che vao dau duoc.
Creative EMU 0404-USB:
Co the thay khi ban cai dat day du trinh dieu khien kem theo san pham:
- Cakewalk SONAR LE.
- Steinberg Cubase LE.
- Ableton Live Lite 4 cho E-MU.
- Steinberg Wavelab Lite.
- IK Multimedia AmpliTube LE.
- SFX Machine LT.
- Minnetonka diskWelder BRONZE (trial).
- E-MU Proteus® VX (bao gom hon 1000 am thanh).
Sound Card USB

That su giao dien qua nhieu thanh phan nay se lam ban choang truoc khi di tim 1 giai dieu hay de thuong thuc voi san pham cua minh. Day la truong trinh dung de san xuat am thanh (thu am) vi vay neu chi mua san pham ve nghe nhac, tinh den chat am chuyen nghiep thi nguoi viet khuyen ban khong nen cai het day du nhung phan mem kem theo. Chuong trinh Window Media 11 hay Jet Audio cung du lam ban hai long.
San pham E-MU 0404 USB cao cap hon Xonar U1 nhieu, duoc trang bi nhung cong nghe xu ly tien tien nham cho ra chat luong am thanh Hi-fi cao. Nguoi viet su dung Headphone ATH-A500 cua Audio-Technica lam nguon phat.
O cac ban nhac khong loi, viec the hien nhung am vuc thap doi voi loa PC la dieu khong tuong, nhung nay, khi nguoi viet tren he thong dan dung thi chung lai co dip khoe minh. Trong bai nhac Violin Concerto No.2 cua Mozart co luc tieng Violin va Pianno xuong cuc thap nhung card am thanh van xu ly tot. O bai nhac The Stone and the Green World cua Kitaro nghe that la day ve huyen bi. Nhung, tieng treble van the hien chua tot, con thieu net va chua tinh te. Thu nghiem tieng Bass, nguoi viet nghe bai Matsuri cua Kitaro, card am thanh the hien ra loa dung chat manh me, dut khoat cua tung hoi trong dao dau. Co the noi tieng Bass duoc card xu ly day uy luc va kha chac. Chuyen sang cac bai nhac Rock ballad nhu 18 And Life-Skid Row roi Before The Dawn-Judas Priest va Dust In the Wind-Kasas, giong nam vocal nghe tinh cam de chiu nhung dau do lai co su khoe khoan dut khoat. Tieng Guitar lead nghe cuc ki trong treo va khong he guong. Co the noi E-MU 0404 da nang su trinh dien am thanh cua ATH-A500 len 1 tam cao moi, truoc day khi thu nghiem headphone nay voi cac loai card am thanh gan trong khac, ATH-A500 trinh dien chat luong nhung cam giac khong gian hoi go bo nhung voi E-MU 0404 cai go bo nay mat han, that dung voi ban chat cau tuc ngu :" Nguoi dep vi lua". Head Amp cua E-MU 0404 that dang gia so voi gia tien cua no.
Onkyo SE-U33GX USB:
Theo phong cach cam la chay, Onkyo SE-U33GX USB khong he gap kho khan gi trong qua trinh su dung. Tat ca nhung gi ban can la 1 headphone tot hay 1 bo ampli, loa chat luong de co the cam nhan duoc chat am moc mac cua san pham nay.
Sound Card USB

SE-U33GX co chat am thien sang, am thanh chi tiet va tach bach giup ban phan biet ro cac nhac cu trong gian nhac. Am tram manh me va am truong rong hon khien am thanh nhu trai rong ra trong khi tieng hat duoc tai hien chan thuc nhu ca si dang dung truoc mat. Dau tien la cac ban Modern Blues cua nu danh ca Nina Simone duoc thu am tot. Giong nu cao duoc the hien muot ma, truyen cam va rat co hon, loa ve tinh tai dai tan trung tot. Tieng dem piano thanh thoat, lung linh. Co the nghe thay ro tung not nhac ngan trong thanh quan ca si. Tieng Treble thien sang va cao. Tiep theo la cac ban Newage tinh cam cua nghe sy lung danh Kitaro. Am nhac cua ong mang dang ve huyen bi, thanh cao va su dung rat nhieu nhac cu duoc truyen tai den tai nguoi viet mot cach chan thuc. Dac biet la bai Moon Shadow, khong gian trong dem vang lang yen tinh, anh trang huyen ao lung linh nhu hien ra truoc mat. Bai nhac su dung cac dai tan thap de mieu ta canh dem. Audio-Technica ATH-A500 1 lan nua hoan thanh nhiem vu cua minh 1 cach xuat sac tuy khong bang nguoi ban o tren nhung cung phai cong nhan day cung la 1 san pham danh cho am thanh chat luong tot.
Ket luan:
Mot thiet bi nho gon, om lay ca mot dan cong nghe hien dai ben trong, voi nhung gi 3 san pham mang lai, nguoi viet co the khang dinh day la mot giai phap kha hay, mot thiet bi tuyet voi cho nhu cau giai tri cao cap cua ban. Co the thay rang cac nha san xuat da chon lua dung ngay phan khuc thi truong khi cho ra mot thiet bi phu hop voi moi nhu cau tu dang dap thoi trang cho toi hieu nang vuot troi, du ban su dung PC hay laptops.
Uu diem: Nho gon, chat luong cao phu hop voi nhieu nhu cau giai tri.
Khuyet diem: Gia tuong doi cao, chua duoc phan phoi rong rai.
Theo ITConnect

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