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Audio Debug for HiSilicon hi3518

the console. A certain condition is required to successfully enable ECHO Cancellation: Mono mode with a sample rate of 8kHz and a sampling accuracy of 16bit, frame length of 80 or 160 sample points, and mic acquisition of voice data AI and remote voice playback AO The configuration frame length must be the same. When you start resampling, you cannot use the EC function. What the hell is going on with this resample. I guess it's just for digit

C pointer principle (73)-GLIB

of current round, for computer, for mic testing $ Press Y/y to extract the number. Press other keys to remove the number! Y Hello, what you got is: 1 PC: 9 $ End of current round, on computer, on mic interaction $ Press Y/y to extract the number. Press other keys to remove the number! Y Hello, what you got is: 10 Computers quit smoking! $ End of current round, on computer, on

Web Audio API hands-on teaches you how to use web APIs to process sound signals: visual music demo,

: Frequency Domain Image Imitation and circular acoustic wave diagram The audio sources of these two images are obtained by calling the computer microphone in the browser, so you must agree to the microphone Permission requested by the browser. Drawing Area Initializes the init () function, obtains the audio source from the microphone, and draws the function. Var canvas; var ctx; var audioContext; var analyser; var mic; // initialize two canvas funct

How to install g'mic1. 5.8.5 for Ubuntu and its derivative versions

G rsquo; Mic is a powerful GIMP plug-in. It is an open and complete framework for image processing, provides several different user interfaces for converting/processing/filters/universal visualized image datasets. G rsquo; Mic can be used in Linux and Windows. G rsquo; MIC provides a window that allows you to add more than 500 filters and preview results to yo

Android audio port communication (I)-2PSK signal modulation

generally within the range of 100Hz-10 kHz, so the amplitude-frequency characteristics (bandwidth) of the audio output system (DA and Audio Amplifier) in the mobile phone) it must also be in this scope (this is my conjecture that due to limited equipment and equipment, there is no system test, interested friends can use the relevant testing equipment for testing), then, since there is bandwidth, good guy, we can achieve our communication channel through this band! It is also worth mentioning th

Alsa soc architecture key point-clear description of driver, but unfortunately there is still a problem unsolved

. e.g. alsamixer, amixer. Stream domain-DACS and ADCs. enabled and disabled when stream playback/capture is started and stopped respectively. e.g. aplay, arecord. For codec domain, it is located in the sound/soc/codecs directory, for example, wm9713.c. For platform/machine domain, it is placed in the machine name directory, for example, neo1973_wm9753.c under the sound/soc/s3c24xx directory. The name is the same as the machine name and CODEC name. When defining the audio path of codec, you nee

Analysis on Android video Development

: AMR Nb Encoding Mediarecorder. audiosource Sound Sampling Device Mic: microphone Mediarecorder. outputformat Recording output format Mpeg_4: *. MP4 Raw_amr: *. Amr Three_gpp: *. 3GP Mediarecorder. videoencoder Video Encoding Method H263: H.263 Encoding H264: H.264 Encoding Mpeg_4_sp: MP4 Encoding Mediarecorder. videosource Video Sampling Device Camera: di

Use Windows Media Encoder to create a digital radio station

mixer", because of the different sound cards, the option name varies on your system. Select an option that allows you to record all the sounds of the system. That is to say, this option is not a very clear option (for example, the stereo mixer here does not describe what the device is, not as obvious as mic ). If you cannot find this option, please update your audio card driver. The author's onboard ac'97 has this option. Most sound cards support all

) Red5 video chat source code

. Events. netstatusevent;Import flash. Events. securityerrorevent;Import flash. Events. syncevent;Import flash. Media. camera;Import flash. Media. Microphone;Import flash. Media. video;Import flash.net. netconnection;Import flash.net. netstream;Import flash.net. Export dobject;Import flash. Text. textfield;Import flash. Text. textformat;Import flash. UI. keyboard; /***... Red5 video chat...* @ Author Jerry*/Public class videochat extends sprite {// AttributesPrivate var IP: string;Private var Re

Bluetooth protocol Analysis (7) Technical analysis of _ble connection

). Slave is the recipient of the Connection (advertiser) and can request (or recommend) connection parameters, but cannot be determined.Note 1: Between two BLE devices, only one connection can be established.Definition of 3.2 PDUUnlike broadcast communications, connection-oriented communication uses a specific PDU, called the data Channel PDU, in the following format (LSB---->MSB): Header (BITS) Payload (Variable size) MIC (+

Analysis and use of AudioSession/AudioCaptureSession, avcapturesession

) display of the recording interface during the recording process (3) Static Image Capturing (4) intercept audio and video data streams in the middle layer to implement audio special effects, video Effects. Because here we get data streams, we need to use a class AVAsset for local storage. Let's see how we use this stuff: The following figure describes the basic process of AVCaptureSession. (1) instantiate AVCaptureSession (orange part) to bind the input and output source to AVCaptureSession. Se

Simple implementation of phone bug in android,

; case TelephonyManager. CALL_STATE_RINGING: // zero response. Break; case TelephonyManager. CALL_STATE_OFFHOOK: // call status // start recording // 1. instantiate a recorder mediaRecorder = new MediaRecorder (); // 2. specifies the sound source mediaRecorder of the recorder. setAudioSource (MediaRecorder. audioSource. MIC); // here the mic can be another type, this google, because the European and America

Hadoop cluster (Issue 1) _ no password configuration for JDK and SSH

will be prompted to enter the password because the certificate has not yet been generated. 2.7 create a public/private key for a certificate $ Ssh-keygen-t dsa-p'-f ~ /. Ssh/id_dsa $ Cat ~ /. Ssh/id_dsa.pub> ~ /. Ssh/authorized_keys 2.8 test logging on to SSH localhost $ SSH localhost Under normal circumstances, the login is successful, and some successful login information is displayed. If the login fails, please refer to the "General debugging steps" below ". 2.9 General debugging s

Create virtual standalone Python environment under Ubuntu whole process

environment env Mkproject Mic: Create MIC Project and run environment mic Mktmpenv: Creating a temporary runtime environment LSVIRTUALENV: List the available run environments Lssitepackages: Lists the packages that are installed in the current environment The created environment is independent, non-intrusive, and requires no sudo permission to manage the package

Examples of Python3 's virtualenvwrapper configuration under Linux

Python version management virtualenv management Virtualenvwrapper is an extension pack for managing virtualenv, which is handy. Note that in Python3, Pip is installed: sudo apt install python3-pip Python2:sudo Apt Install Python2-pip 1.virtualenvwrapper Installation: #安装virtualenv (sudo) pip install virtualenv# install virtualenvwrapper (sudo) pip install Virtualenvwrapper 2. Configuration: Modify ~/.bash_profile or other environment variable related files (such as. BASHRC (This is under my Ub

Brief Introduction to Ubuntu7.10 common software and general settings

The Linux community has compiled some useful Ubuntu7.10 related knowledge, hoping to give you a better understanding of Ubuntu's features! 1. Ubuntu7.10 after installation, add Chinese support sudoapt-getinstalllanguage-support-zh2. Install compiling environment sudoapt-getinstallbuild-essential3. Sound and MIC problems if there is no sound, see if it is BIOS The Linux community has compiled some useful Ubuntu7.10 related knowledge, hoping to give you

Solution to slow SSH Login

The solution to slow SSH Login is my own situation. Most of these latencies are caused by GSSAPI authentication! You can use the-v option to confirm your situation. For example, the detailed Logon Process of ssh is as follows: [root @ xuekun ~] # Ssh-v xuekun@192.168.15.120 ...... debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: includeded debug1: Authentications that can continue: publickey, gssapi-with-mic, password debug1: Next authentication method:

Linux ALSA sound card driver Four: Control device creation

bidirectional (Playback and capture). function, depending on the function of control, can be the following string: Switch,volume,route and so on. There are some exceptions to the naming: global capture and playback "Capture Source", "Capture Volume", "Capture Switch", they are used for the global capture Source,switch and Volume. Similarly, "Playback Volume", "Playback switch", are used for global output switch and Volume. tone-controles Tone control of the switch and volu

Problem logging for Linux Bash:scp:command not found

:remote Protocol version 2.0, remotesoftware version openssh_5.3debug1:match:openssh_5.3 Pat Openssh*debug1:enabling Compatibility Mode Forprotocol 2.0Debug1:local version stringssh-2.0-openssh_5.3Debug1:ssh2_msg_kexinit sentDebug1:ssh2_msg_kexinit receivedDebug1:kex:server->client Aes128-ctrhmac-md5 NoneDebug1:kex:client->server Aes128-ctrhmac-md5 NoneDebug1:ssh2_msg_kex_dh_gex_request (1024Debug1:expecting Ssh2_msg_kex_dh_gex_groupDebug1:ssh2_msg_kex_dh_gex_init sentDebug1:expecting ssh2_msg_k

field | Method | Properties | Members of the Class | Python

#-----------------------------------------FieldclassClass:#static fields, belonging to class #has been created and stored in the class, not every creation of an object created once;Country ='China' def __init__(self, name):#normal field-->> saved in the created objectSelf.name =name#Common method-->> saved in class defShow (self):Print(Self.name)#instantiating an objectobj= Class ('Mic')Print(Obj.name) obj.show ()#getting static fields from c

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