The weekend to introduce 3 can simulate environmental effects (coffee shop, Rainy day, Seaside, jungle, etc.) online site, can help you concentrate on work, but also can help you relax decompression, very practical, needy students themselves.
There was a time when I was used to working or reading in a coffee shop, and I always felt that the time in the coffee shop was so fast that I was more focused on the things I wanted to do, whether I finished writing an article or ending the book at hand.
Master Volume: Sound card Total Volume
Waveform: Music Volume
Software synthesizer: Soft Effect Plug-in Volume
Front: Front speaker volume
Rear: Rear speaker volume
Subwoofer: Surround speaker volume
Center: Medium Speaker volume
Side: Side-mounted speaker volume (for 7.1 speakers)
SPDIF: Digital Interface Volume Control
Front Green in: front panel greens Jack input
Rear Blues in: Back panel blue Jack input
Front Pink in: Front panel pink Jack input
Rear grey in: Back panel gray Jack
1, open the Universal K song software, click Want to sing a song, click K Song. Click on the duet before you start recording the song.
2, click to confirm the duet can quickly start
3, record a good song we will find that just started singing there is no murmur, suggest that we use headphones, sound quality will be better, only with a headset. This is important, one ear with headphones, not tw
Audiomanager has this method:
Iswiredheadseton ();
Returns true if the headset is inserted, otherwise false;
Of course, to add a permission, or always return false.
I started chasing after a long time source code. The process of detecting headphone inserts and unplugging was found in real time, but not very helpful to my needs.
Real-time detection of headphone insertion and pull-out:
Every time you insert and unplug headphones, the system sends intent
The mobile phone does not hear the sound, generally is two kinds of situations:
One, the mobile phone setup has the question, the bell, receives listens the sound to be minimized, is no sound. This you can debug yourself, ordinary
Mobile phone into the phone settings, or the scene mode can be adjusted. Smart phones are not listed in detail because of the number of version models.
。 Find instructions or find a younger person, especially someone who likes to play with a mobile phone to help you
normal.
If the above check is correct, the computer suddenly no sound is most of the equipment problems, such as headphones on the volume control is inadvertently transferred to the minimum or the headset is damaged, if it is the amplifier, it may be bad or the connection between the computer and contact bad or damaged, Before the company appeared the computer and the power amplifier between the audio line was bitten by the mouse situation.
The tot
,WebServiceIt is like three interfaces. One side can touch up to two of them.
Is the interface better or less? Let's take a look at the example of Sony Ericsson mobile phone. Most of Sony Ericsson mobile phones share an interface for headphones, charging, and data transmission, when charging, you cannot plug in headphones to listen to songs, when you plug in headphones
Android Bottom -up headphone Plug and audio channel switching instanceBecause headphones are used as separate headsets, the events are reported separately. The detection of headphone jacks on the Android system layer is based on /sys/class/switch/h2w/state values (in 4.4.4_r2 For example in Wiredaccessorymanager.java).A switch class -based h2w switch is implemented in the kernel as long as it is "true or false" . the Android system will be able to mo
use infrared remote control for a moment, but you cannot find the remote control. In addition, I have developed the audio port extension header, insert it into the ear port of your Android phone and install a special app. You can use it to remotely control any electrical appliance with the infrared remote control function in your home!
You can also leave the monotonous ear plug and the corresponding extension header to know the temperature, humidity, and other indicators of your surroundings in
, but the power supply current is limited to ma.
14. The headset is incompatible with the sound card or motherboard.
Sometimes, after you plug in the headset, you find that the sound of the headset is very small and cannot be used normally. There are two situations:
(1) earphone Impedance
The earphones we normally use are 8 ohm impedance headphones. If we purchase high-impedance headphones or other special-
light. Moreover, the battery labels are clearly written, and the battery labels correspond to the battery type. The labels are clear in the fonts of the manufacturers, and the anti-counterfeit labels have a good brightness and look like they are stereoscopic.
6. The price of the original power is generally no less than 100. If the price is low, pay attention to it.
Nokia headphones and general headphones
In recent years, all major MP3 manufacturers have made great efforts in sound effects. Although it is said that it is not killing you to death, however, this competition has indeed brought a lot of experience to MP3 users.
The new Samsung has torn down iriver and iAUDIO for many years, and has recovered its own style of SONY, as well as two eye-catching iPod and innovation. Sound effects are closely related to ear plugs and headphones. If there is no
Dolby Digital plus for tablets tries to compensate for weak speakerscan software optimizations make the speakers in today's tablets any better?
Dolby Digital plus for tablets, shown here in a preliminary form, is a reasonably successful software fix for a pervasive hardware problem-namely, the low-rent speakers in most tablets. Dolby
On most smartphones and tablets, speakers are an afterthought at best. While processor speed and core counts, graphical capability, amount of ram, and even pixel d
transmits Bluetooth data to and from the BlueZ stack.
Sony HBH-30 Bluetooth headsets
The preceding Bluetooth device example shows network data streams. Now, you can view Sony Ericsson Bluetooth headphones to consider the transmission of Bluetooth audio (SCO) data. Before the headset can communicate with a Linux device, it must be detected by the Bluetooth link layer on the Linux device. Therefore, you must place the headset in discovery mode (by pre
file on the left to a smaller number such as 85 or 80!
The handset field is used to configure the receiver parameters. I added a parameter for setting the RX1 channel volume in my configuration on the right, but it does not seem to work either. Therefore, the field on the right is not officially available, you can also add this in official 4.4 to check whether the audio volume can be adjusted. Note that the audio volume here does not work during a call. The audio volume during a call is set
the examinee does not know the key, he will return to the previous page and enter the system again. The answer record will no longer exist.
(5)English:Some compositions can only answer on one line, but the effect of automatic line feed is not good.
(6)English:Some Apple headphones are unavailable and have no sound.
(7)English:English reading order English teachers think it cannot disrupt you, but the system unions automatically change
Improvement
not as special audio decoding chip, so long as your phone does not have independent audio decoding chip can not speak of the sound quality of the phone is much better, the most important point is the headset, generally the device can play music is called the front end, the headset is called the back end, The front-end can only guarantee the original sound quality, and we finally hear the voice through the headphones, although the front-end each has a
A simple step to identify the true and false Apple headphones
In fact, do not need to say more, we look at the picture can be, through the diagram of 1, 22, if the sound has changed, it is the original headset, if the sound after blocking, it is the cottage high imitation headphones.
The illustration of 1, 22 is low-frequency sound mouth, cottage manufacturers to learn the appearance, but can not
Click to view the highlighted solution directly.Finding a laptop with this newly bought headset has a slight current of one months ago. It belongs to the kind of quiet, but can hear the sound, knocking on the keyboard or when placing a water cup if a slight vibration, there is a variety of current fluctuations, a rumble, and finally collapsed. Dick Silk can not afford to buy a computer-specific headphones, only make a phone headset, by today's rest da
Bluetooth headset, the screen of your phone to increase or decrease the volume, then the key value is transferred from the Bluetooth headset. Conversely, if the internal volume of the Bluetooth headset is changed, Android has no response whatsoever, Then it is the function that controls the volume of the Bluetooth headset, and does not escalate the key value to Android.4. Connect the Bluetooth call, if you can hang up the phone by pressing a key, then it means that the key is transmitted from t
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.