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============ Problem Description ============Android Development Board in hand, mic recording Go is i2sI'm using the audio recording software provided by Android itself soundrecoder.apkWhen recording, the small pointer that detects the sound seldom shakes, when my voice is high, I can record it, the sound is smooth, and then a high or can record!The sound is intermittent, and it's very nasty!I use the USB interface of the camera to record, (because th

Linux GNOME environment, microphone settings are described here. By default, the microphone is shielded and there is a volume horn icon on the panel. If not, right-click the microphone and add it. Double-click the speaker icon to bring up the volume control panel. Click "Preferences" in the "edit" menu bar. In the displayed window, click "Microphone" and "microphone truncation", and "Mic Boost (+ 20 dB )". Click Close. If the "line Input", "Microp

Free Open Source Embedded OS, GUI, fs, database OS: rtemswww.rtems.orgftppubrtemsecosecos.sourceware.orgfreertosChibiOSRTuSmartXt-kernelwww.t-engine.orgT-Kerneltkernel_e.html note ucos is not free GUI: Nano-X (mic Free Open Source Embedded OS, GUI, fs, database OS: rtems http://www.rtems.org/ftp/pub/rtems/ ecos http://ecos.sourceware.org/freertos ChibiOS/RT uSmartX t-kernel http://www.t-engine.org/T-Kernel/tkernel_e.html note ucos is not free GUI: Nan

used to record PCM data. The audiotrack is used to play PCM data. PCM is the raw audio sample data that can be played with a VLC player. Of course, the channel sample rate and the like to set their own, because the original sample data is no file header, such as:VLC--demux=rawaud--rawaud-channels 2--rawaud-samplerate 44100 AUDIO.PCMGo back to the two classes of Mediamuxer and Mediacodec, and their reference documents see Http://developer.android.com/reference/android/media/MediaMuxer.html and H

VIRTUALENV to manage multiple development environments, Virtualenvwrapper makes virtualenv more usable# Install: (sudo) pip install virtualenv VirtualenvwrapperLinux/mac OSX below:Modify ~/.bash_profile or other environment variable related files (such as. bashrc or. ZSHRC after ZSH), add the following statement export Workon_home= $HOME/. Virtualenvsexport project_home= $HOME//usr/local/bin/ virtualenvwrapper.shMake it effective immediately (or you can restart

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

the extended audio interface. AAFP is the frontend audio interface that complies with ac97 sound effects, ADH is the extended audio interface that complies with Ada sound effects, and spdif_out is the coaxial audio interface. Here, we will introduce how to install the front-end audio connection (see ). It is an extended plug-in connecting the front audio jack of the chassis to the motherboard. The front audio interface is generally dual-channel, L indicates the left audio channel, and r indic

(m_brecording );} It is also very simple to use. Here I declare a pure virtual class cadoframehandler. This class is specifically used to let users reload its pure virtual function. As long as it is reloaded, after the settings are correct, you can automatically start collecting audio data. Note that in this class, I use 8 kHz, 16 bits, and mono single-channel PCM data collection. First: # include "captureaudio. H" and then: Class cmyclass: Public cadoframehandler {... public: // override the c

= "soundrecordingdemo ";Protected void startrecording () throws ioexception{Mrec. setaudiosource (mediarecorder. audiosource. Mic );Mrec. setoutputformat (mediarecorder. outputformat. three_gpp );Mrec. setaudioencoder (mediarecorder. audioencoder. amr_nb );If (msamplefile = NULL){File sampledir = environment. getexternalstoragedirectory ();Try{Audiofile = file. createtempfile ("IBM", ". 3GP", sampledir );}Catch (ioexception E){Log. E (TAG, "sdcard ac

dependent on software, engineers must increase customer Sates-faction, boost software-development productivity rates, and reduce product-defect rates. because software directly affects product users, the responsibility for customer satisfaction is increasing. with so many tasks dependent productivity can yield large eco-gnomic gains, while decreases in software-defect rates can prevent large economy mic losses. most importantly, where software suppor

, 0 , Segmentid ++ );Myjet. Play (); This SDK includes a sample application ――Jetboy-This example shows how to use jetplayer in a game to create interactive game music. It also explains how to use the jet event to synchronize music and game logic. The application is located in. 2. Audio collection Audio Acquisition on the device is a little more complex than playing audio/video, but it is still quite simple: 1) use the new operator to createAndroid. Media. mediarecorderNew instance

the y difference does not work. Let's look back at the principle of Kinect: People with graphics experience can see the perspective conversion principle at a glance. Simply put, the Kinect uses the IR and depth data for skeleton detection, switch to cameraspacepoint and then combine the parameters of kinect2 To figure out how cameraspacepoint came from: Version 1 Version 2 Depth range 0.4 m → 4.0 m 0.4 m → 4.5 m Color stream 640 × 480 1920 × 1

initiative to call 1xx86 as a "client", that is, the caller, and then press the key to select a different menu, or enter the mobile phone number and other information, you do not need to play the voice or recognize the buttons. What we need is the ability to dial and perform button operations. To sum up, IVR is passed. Then I came up with another solution, modem !!! What? Did you think of an old-fashioned cat with a dial-up 56 K? Yes, but what I need is a programmable modem that supports the AT

Composition of a mobile phone: CPU central processor Memory LCM display Touchpanel: Capacitive screen/resistive Screen Headset headphones Bluetooth WiFi GPS navigation Mic mic Receive Receiver Speak speaker Image sensor camera G-sensor gravity Sensor M-sensor compass Keypad keyboard Backlight IC screen Backlight RF module USB Data Interface FM radio Vibrate vibration Motor Ofn Optical Mouse Jarball trackbal

supportDisable audio support-Useaudio enable Android audio support (default)Enable audio support-MIC Simulate mic input using WAV Files-Flash-keys flash key presses on the device skin-Raw-keys disable Unicode keyboard reverse-Mapping-Radio -Oldradio enable old VM-based simulated radio-Onion -Onion-Alpha -Http-proxy Proxy Server Settings-Verbose enable verbose output-Verbose-keys enable verbose key presses-

= audiorecord. getminbuffersize (frequency, 33. channelconfiguration, audioencoding); 34. 35. playbufsize = audiotrack. getminbuffersize (frequency, 36. channelconfiguration, audioencoding); 37. // ------------------------------------------- 38. audiorecord = new audiorecord (mediarecorder. audiosource. mic, frequency, 39. channelconfiguration, audioencoding, recbufsize); 40. 41. audiotrack = new audiotrack (audiomanager. stream_music, frequency, 42.

in the content database and automatically mark a path to obtain the file.4. Use mediarecorder. setaudiosource () to set audio resources. This will probably use mediarecorder. audiosource. Mic;5. Use mediarecorder. setoutputformat () to set the output file format;6. Use mediarecorder. setaudioencoder () to set the audio encoding;7. At last, the audio, stop () and release () recorded by prepare () and start () are called at the end.The following is an

/MUX will be checked. For details, see dapm_set_path_status: Determine whether the source corresponding to this path is selected, if yes, Set P-> connect = 1; otherwise, Set P-> connect = 0. This process is described in (2) When the upper layer uses alsa_amixer or other methods to operate dapm kcontrols, the connection status path-> connect of the widget path will be updated. The simple process is as follows: Amixer-application layer [alsa_amixer cset name = 'left output mixer left input mixer

(192.168.20.59) 'Can't be established. RSA key fingerprint is 6a: 37: c0: e1: 09: a4: 29: 8d: 68: d0: ca: 21: 20: 94: be: 18. Are you sure you want to continue connecting (yes/no )? Yes Warning: Permanently added '192. 168.20.59 '(RSA) to the list of known hosts. Root@192.168.20.59's password: Permission denied, please try again. Root@192.168.20.59's password: Permission denied, please try again. Root@192.168.20.59's password: Permission denied (publickey, gssapi-with-