2. Is AC'97 so bad really?
If you ask the tip knows the friend of computer: Does AC'97 weak tone get stuck how? They say difference with one voice almost. Why? Writer summary gives the following reason.
A CPU takes up rate is high
Because AC'97 weak tone blocks only responsible D/A and A/D changeover, and the major work of processing should give CPU will do sth for sb, because this system natural resources takes up,lead also lift subsequently. This is in CPU function is inferior previously, this it may be said is deadly injury. When playing large 3D game, use AC'97 weak tone gets stuck, can cause speed to decelerate, jump frame spends the question such as screen even. This left extremely abominable impression to a lot of people (AC'97 says: The fault that this is not me ah ~~ ! ) . Nevertheless, at present this appears unchallenged also. Of CPU advocate frequency big fight also enters a climax, of CPU advocate frequency flourishing, of newest Pentium4 advocate frequency is as high as 2.6G, and highest AthlonXP already also achieved 1.667G, have advocate the CPU with so tall frequency becomes backup force, AC'97 looks OK loose at a heat. This as soft cat same, after CPU function rises at full speed, the enough of that bit of resource that take up lets a person accept, because of this reason, a lot of users just admit good in quality and cheap in price soft cat slowly, like believing this AC'97 weak tone gets stuck to also be met.
B acoustic quality owes beautiful
People often says card of AC'97 weak tone is a thing that can allow computer phonate only only, the acoustic quality that censured it namely owes beautiful. The acoustic quality of AC'97 cannot block what can be likened to with those high-grade sound really. After all it is free. But with those one, 200 yuan sound card is compared, difference not so great disparity. The letter a confusion of voices of weak tone card compares all AC'97 (SNR) can achieve 75dB above. Although can get advocate board all round the clutter interference of electronic component, but this kind of problem is in charge for the making of sth. is masterly advocate board on, influence very little.
Little knowledge: Letter a confusion of voices is compared (SNR, signal To Noise Ratio) it is to point to signal and noise of some of the solid when having signal, expression is the noise that setting gives out commonly. The more commonly used than taking logarithm of intensity is multiplied again with 10, the unit is DB (decibel) . When the letter a confusion of voices is compared under 75dB when, noise may is aware of in quiet environment, and when broadcasting music not apparent however. When when the letter a confusion of voices is controlled than achieving 95dB, person ear listens hard give noise.
The good news that C AC'97 weak tone blocks
Everybody can see, card of AC'97 weak tone is in at present the circumstance falls, although " of " price cheap, but the category that still does not calculate " content beautiful " at least. Nevertheless, good now, user of weak tone card undertook a lot of AC'97 OK and freely upgrade, make its thoroughly remould oneself, become a high-powered sound to get stuck (relative to those cheap acoustical card) . What thing can have such supernatural power? That is drive.
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