built-in microphone
Since the ipod touch is now built with microphones and speakers, the headset's built-in microphone seems to be taken for granted. Unfortunately, not only does the hidden earplugs not provide a microphone function, even some Apple headset does not have the Playback control button installed. If you have an Apple headset with a playback control button and a microphone, the
sound card driver problem, the solution, the installation of sound card driver ( Go to the official download, or have a backup drive recovery drive, or simply, download a driver wizard, let it look for the problem of the driver update to solve it, as shown in the following figure:
3, or open the Control Panel, find sound and audio equipment, double-click Open, if the following picture shows the situation, the device volume of this item can not be adjusted, audio in the default devi
The author has recently been doing Bluetooth status to get things, summed up a set of Bluetooth status code, share the following:Private Bluetoothadapter BA; Bluetooth Adapter BA = Bluetoothadapter.getdefaultadapter (); Whether the Bluetooth adapter is present, that is, whether an error occurred if (BA = = null) {Isbluecon =-1; Error}else if (ba.isenabled ()) {int A2DP = ba.getprofileconnectionstate (BLUETOOTHPROFILE.A2DP);//can manipulate Bluetooth devices, such as the Bluetooth
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 monitor the plug and unplug information. Insert
, 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 purchas
Raspberry Pi has two audio output modes: hdmi and headphone interfaces. You can switch between the two modes at any time.
If your HDMI monitor has a built-in speaker, the audio can be played through the HDMI interface. You can also switch to the headset interface to use the speaker of the headset or other headset interface to play the video. If your monitor reque
(new intent (context, autoanswerintentservice. class ));
In this way, the Automatic Answer service is started. In this code, the logic of Bluetooth to answer the phone is also introduced as follows:
The Code is as follows:
protected void onHandleIntent(Intent intent) {Context context = getBaseContext();// Load preferencesSharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);BluetoothHeadset bh = null;if (prefs.getBoolean("headset_only", false)) {bh = new BluetoothHea
In the audio driver code I am in charge of, I used PXA270 gpio34 to detect headphone insertion and removal. the original driver has a bug, that is, when the headset is inserted, the headset and the Horn are both ringing, and it is obvious that the headset insertion event is not responding. so I started to use the detection gpio signal pull high or pull low and th
IOS audio playback (2): AudioSession Conversion
Preface
This is the second article in the iOS audio playback series.
Before implementing the seven steps described in the previous article, you must also face a troublesome problem, AudioSession.
Introduction to AudioSession
The main functions of AudioSession include ):
Are you sure you want to use audio in your app? Or recording ?)
Select an appropriate input/output device for your app (for example, the input microphone, the output is a
1. brightness adjustment: Usage: the screen remains unlocked, and the finger is placed on the status bar above the screen, where the power signal is displayed and dragged left and right. PS: Set the display brightness-the automatic brightness hook is canceled.2. Functions: Usage: 1. Power key + home 2. Long press the SPEN pen button and click the Screen 3. Cover the screen on the right side with the palm of your hand and slide to the left3. Enable the music player on the
audio call applications, you can use this category.
Avaudiosessioncategoryaudioprocessing, only offline audio processing is supported. Offline audio processing is supported, and playback and recording are not supported.
Avaudiosessioncategorymultiroute, supports audio playback and recording. Allows simultaneous input and output of multiple audio streams. For example: USB and headset simultaneous audio output.
In addition to Avaudiosessio
The real use of Linux every day there are new discoveries ah, as of this morning there is a computer, listen to a few songs. There is no sound in the headset after plugging in. I think this is a bad headset, put in the phone headset, I found a voice headset, very strange, I like the computer interface is not a problem,
The outer packing of the G3 earphone of the bingo is more domineering, the design of the two sides hollow can see the true appearance of the earphone clearly. As a game headset, volume than the general headset to large, huge headphones give a person a domineering feeling.
Bingo G3 Headphones because it is a game headset, so compared to the general size of the
iphone 7 Plus, the headset will be controlled via lighting, with a new headset. Lighting headphones are available on all two handsets, and the lighting switch head is provided.
Why remove the 3.5mm headphone port?
1 because this form has been for more than 100 years, Apple hopes to lead change through this change.
2 take up too much space, so it is best to remove the 3.5mm h
Users often have a variety of options when using their Android device for multimedia interaction, most of which have a built-in microphone, a jack for a wired headset, and some that provide support for Bluetooth devices, A2DP support, and so on.Check which device is being usedYour app should be affected by the audio playback device you're using to make a reasonable response.The following code snippet shows that you can request Audiomanager to check if
source code of A870K v1.42, but has already added the automatic version recognition function, so the three editions are available!
3. Because Android4.4 may be incompatible with some software or games (for example, 360), you may also need to click here as appropriate. If the software itself is incompatible with 4.4, you can only find a solution from the software provider ..!
4. Version 4.4.3 is only a pure Mokee version upgrade. Some bugs still exist, but they only focus on fixing problems tha
How much is Xiaomi Bluetooth headset?The price is at: 79 yuan (both black and white are the same ).When will Xiaomi Bluetooth headsets go public?Xiaomi Bluetooth headsets will be available in Xiaomi mall on September 10, June 18.Xiaomi Bluetooth headset has won the German IF Design Award. It adopts an integrated Molding Design and anti-oil spray technology on the surface. It is available in black and white
.
Note: When playing a CD in cd s/pdif in or analog CD mode, you cannot use the directsound output mode. At this time, only two audio channels have sound.
6. The wonderful use of multi-channel
Many of my friends are dual-feed users of speakers and headphones, while most sound cards do not have independent earphone output. It is very cumbersome to switch Plug and Play back devices frequently, in fact, multiple channels can also connect headphones and speakers to the sound card without affecti
This article, the original connection: http://blog.csdn.net/freewebsys/article/details/46546205, reprint please indicate the source!1, about FreeSWITCHFreeSWITCH is a soft-switching solution for telephony, including a softphone and soft switch to provide voice and chat product drivers. The FreeSWITCH can be used as a switch engine, PBX, multimedia gateway, and multimedia server.FreeSWITCH supports a variety of communication technology standards, inclu
, some people say that using a network cable is not slow, other can be all the phone to a VLAN, all the phones are connected to the back end of the Poe switch, in fact, the power supply is also provided by the switch, you only connectThe second type: use his own company's IP phone softphone as shown in. 650) this.width=650; "height=" 676 "title=" clip_image003 "style=" margin:0px;border:0px;padding-top:0px; Padding-right:0px;padding-left:0px;backgroun
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