How to troubleshoot Windows 7 Sonic noise problem

As we all know, Windows XP, which accompanies us for more than 10 years, will end support on April 8, 2014. Many PC users are upgrading the WINDOWS7 system. However, some problems have come along with them. A lot of users in the process of using Win7, there will be a phenomenon of sound explosion. For me, this starter enthusiast, this sound is unbearable to me.

In fact, the cause of sound and sound card driver and the player has no relationship. Many people say that a sound card is installed after the sound of the problem is solved. But this is false, some sound card driver will turn on the function of the modified sound, although we do not feel the sound of the sound, but we play out the voice will have a great loss. For audio enthusiasts and good ear friends, this is also unacceptable. So, I want to explain the cause of the problem from the root of the problem.

In recent years, compared with the decline in PC sales, the development of computer technology can be said to be changing, especially the CPU technology under the leadership of Intel developed more quickly. At the same time, the CPU's new technology also integrates the core-frequency function and the energy-saving function.

I U's core-frequency function Needless to say, do not understand can find Baidu. Compared with the core frequency, the CPU in the idle state of the frequency of energy-saving technology is very few people cicada. In most cases, the XP system does not support the CPU idle state automatic frequency reduction technology, WIN7 support idle state to reduce the frequency of the processor technology. This technology has finally become the culprit of the Win7 sound.

We usually like to enjoy music on the computer, most enthusiasts like to use foobar2000 and chin listening to listen to music, however, in the seconds after we open the audio file, we often hear a short burst of sound phenomenon, this phenomenon is caused by a brief interruption of voice. A lot of people ask, why does the voice pause? Is it the problem with the Win7 audio driver? For the friends who know the software, they will suspect that there is a problem with the driver, for the hardware master, they will think that the sound card hardware is problematic, Some friends even think that the sound card power supply or computer power is not enough. Few people think that the problem of Win7 sound is in the Win7 energy-saving function.

Now, let's talk about the cause of Win7 sound.

In recent years, our computer's motherboard and CPU have idle state to reduce the frequency of energy-saving functions, in fact, the reduction is multiplier, take a relatively old CPU AMD Pterodactyl X4 955来 said, using XP system, The CPU will work moderately at the highest frequency, which is 3.21GHz, but the processor will automatically reduce the frequency to 800MHz after using the Win7 system, either in idle state or at a low CPU footprint.

When playing music with the player, the CPU occupancy rate is low, but as the CPU occupancy rate changes, the CPU and the motherboard energy-saving function will frequently change the CPU frequency, the main frequency from 800MHz to 3.2GHz fluctuation. At the same time, the voltage of the CPU fluctuates from 1.02V to 1.39V. Win7 because of this fluctuation, sound card has been affected, so there is a burst sound.

A lot of high-end CPU users are more obvious, this is because the CPU performance, the player software can hardly occupy much CPU resources, so the CPU is always at low frequencies and frequency fluctuations under the operation, in the frequent voltage changes, the sound card is affected by a great chance. Currently, in addition to turning off energy-saving features. I did not find a fundamentally solution to the problem, please all the experts of the idea.