Based on Android 4.4 and 4.2, codec used for detection is wm8994.
The mic detection in Android and Kernel is based on the headset detection. The specific process is as follows:
1) kernel uses Jack to detect pin interruption and detects that headphones are inserted.
2) read the codec register to determine whether the headset has mic
3) notify the Android upper layer through the InputEvent/UEvent Mechanism
For more information, see my previous article o
The iphone's headset is called Earpod, and the sound is good. However, a lot of users have found that the iphone headset computer can not be used, plugged into the computer after either the sound is paste, or listen to the song when simply accompaniment, the human voice is very small. Why can't an iphone headset work on a computer?
It's not because your headphones are broken, it's just a normal state of the IPhone6 headset. It is worth mentio
computer with audio devices such as sound cards, microphones, headphones, or speakers. More than 128MB of memory and the minimum 33.6Kbps rate of Internet access.
The installation of the software is very simple, you just follow the instructions of the Installation Wizard, you can click "Next" to complete the installation. The default software will run automatically when the installation is complete. First use will open the Create Account dialog box
Many users who use the MacBook have encountered internal speaker failure, and the MacBook's built-in speaker fails, and its headphone holes will also light up red, as shown in the following figure. So what causes the MacBook's headphones to Kong Liang the red light? What should I do if the MacBook speaker doesn't sound? Here's a look at the solutions offered by users:
To solve this problem, we have to consider two kinds of situ
feel afraid!
Common mistake three: the IPhone can't use Android headphones!
Believe that a lot of people in the purchase of headphones will see the "ios version of" or "android version", so that you subconsciously think that "iphone and Android headphones can not be exchanged use. In fact, this sentence is only half right. Because IOS can connect t
Many friends of the PC are installed every day beautiful bar, in every day in the sound can be set in the PC audio equalizer to make music more in line with their taste, using this method than the online recommended music mode is better to listen to more, but many small partners do not know how to set, the following small series to everyone detailed introduction to set the method, Hope to be able to help everyone.
How to set the Equalizer in PC:
In the state of heavy bass added dance effec
area are missing because our camera position has changed. What if the camera's position is not changed, just the direction of the change? Thus there is no change in the visibility of the pixels:Timewarp is the use of this feature, in the case of a constant position, the rendered screen according to the latest sensor to the information to calculate a new frame of the picture, and then submitted to the display. Because the angle changes are very small, the edges do not have a large area of pixel
thinks it's a stereoscopic image.In layman's terms: Virtual distances are created by optical structures. Mobile phone is just a plane, placed close to the eyes, through the calculation of the phone image pre-distortion, distortion, and then through the cardboard of two convex lenses to see the image back, and then generated a virtual focal length.Why does it produce dizziness and nausea?Our human eye observes that real-world images are real-time, such as moving your eyes from the cup to the key
Sony PS VR device okay
Virtual Reality device PS VR for the price of 399 U.S. dollars, and officially sold in October this year, PS VR needs to be matched with PS4. PS VR uses a 5.7-inch OLED screen with a resolution of 1080P (Monocular 960x1080), the refresh rate supports 90Hz and 120Hz, the field angle is about 100 degrees, and the delay is less than 18 milliseconds.
Sony PS VR equipment how much money
Sony posted a PS VR price of 399 dollars (about 2600 yuan) on GDC 2016, whic
Many friends will encounter the computer suddenly did not sound or reload the system after everything else is normal, is the stereo or headphones no sound problem. I'll explain in detail the various reasons why the computer doesn't sound, and in the later part of the article, I'll explain the microphone's sound problem. Through the following detailed analysis, I believe that you can let you know that your computer is not a sound is going on, in the en
Recently engaged in the wm9713 of the external audio playback and the detection of headphones, engaged in a few days to hope that the final fix. For example, the Development Board is real210 v6.2 version number:Assuming that you want to make the external sound output, then ensure that the value of the wm9713 0x1c Register is 0x1200, the headphone output is 0x00a0, of course, the two can also output at the same time, the value is 0x12a0.Also set the Ac
I believe many friends may have encountered a computer in front of the headset does not sound but the computer behind the normal situation, because the solution is relatively simple, so has not been written out, but recently there are many friends encounter computer front headphone jack no sound, the back can be used! Ask the editor not the interface is broken, In fact, many times just did not set up a good cause, the following editor for you to introduce the computer host front
Recording and playback in the development process there are a number of problems, the main problem is three: detect whether there is a sound input device when there are multiple sound output devices, the specified sound output device detects the insertion and pull-out of headphones
First, for devices such as itouch and the ipad that do not have a microphone, you need to check to see if the headset is plugged in and it's relatively easy for the iphone
Author:It168.com reny
I. 3D sound effectsWith the continuous development of software and hardware, the traditional dual-channel single-layer stereo sound field cannot meet people's needs. In order to get a better three-dimensional feeling and space feeling, scientists use digital audio to generate a brand new sound-simulating 3D sound effects.In daily life, we use two ears to listen to things, obtain information from various sources, and then locate the sound through brain computing. The comput
Many people use the computer, even if the computer is used to play games, office will have to listen to music, the habit of watching movies. So a computer without sound is used to feel powerless. And a lot of people will also because I have nothing to do recently tune the audio manager. Then the headphones don't sound or there's a murmur. Our main side is to analyze the computer headphones have a murmur how
Bingo B630 Headphones are not lightweight that type, the structure will look more atmospheric, not too compact. B630 headset using the dual-power patented technology, the high and Low unit separation, can effectively interpret a more accurate and excellent sound. Headset transmission stability in the 2.4G more mature today, has been very satisfactory, the actual use, as long as there is no wall barrier, 10m distance is more than sufficient.
The B63
alerts they set. In essence, users want to hear what they expect, rather than what they don't expect.
To help you meet such requirements,IPhoneThe OS provides some programming interfaces that you can use:
Describes how the sound of your application should be consistent with other sounds on the device.
Ensure that the application sound can be played as expected.
When you decide how to handleSoundPreviously, you need to understand how users expect applications and devices to operate when adjustin
One of the most prominent advantages of the Siemens SX1 mobile phone is that it supports stereo MP3 and built-in FM. Although the original stereo PTT headset is of good quality, it can also be used as an antenna with built-in FM, however, one of the traditional methods of using a Siemens mobile phone is to use a headset adapter to enable the use of standard 5mm stereo headphones, such as senhaiser mx300/400/500. Therefore, the modification of the SX1
the head can not see anything, how to install force?All right, can see the head is not on the line, saying goes: Metro installed force rely on headphones AH.iphone headphones too bad street, be sure to buy that big head-mounted headphones. Now more popular has two brands, one is Sennheiser, logo is a big s, the other is beats, logo is a big B. Well, personal adv
point. Will go back to the front of the previous step of the interface. Enter the system again. The answer record is gone. ( 5) English: some of the compositions can only be answered on one line, their own initiative to change the line effect is not good. (6) English: Some Apple headphones are not available. No sound. (7) English: The Order of English reading English teachers feel that can not disrupt you, but the system of trade unions to change the
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