ultrasound microphone

Analysis on the impedance of ultrasonic probes and the impedance of ultrasonic probes We know that normal people can hear the sound at a frequency of 20Hz ~ 20 KHz, ultrasound is the sound signal with a sound frequency of more than 20 KHz, avoiding audible signals that human ears can hear, so that ultrasound has a strong anti-interference ability. The simplest method is to use the network analyzer. The two

Two real-world examples:1, B Super: Everyone has done a physical examination of the B-Super bar, B-ultrasound can be detected through the belly of your internal organs of the physiological situation. How is this done? B-Ultrasound is a B-type ultrasonic, it can through the belly through to your body to launch B-type ultrasound, when the ultrasonic wave encountere

Two real-world examples:1, B Super: Everyone has done a physical examination of the B-Super bar, B-ultrasound can be detected through the belly of your internal organs of the physiological situation. How is this done? B-Ultrasound is a B-type ultrasonic, it can through the belly through to your body to launch B-type ultrasound, when the ultrasonic wave encountere

Currently, one of the essential software for online communication is instant messaging software such as MSN Messenger and QQ. In addition to text chat, these software can also directly perform online voice conversations, that is to say, you don't have to spend a penny to enjoy the Internet call for free. 1. Network conversation in MSN Messenger While some functions of MSN Messenger are slightly inferior to those of QQ, MSN Messenger is the first software to introduce language dialogs into instan

users when an error occurs when connecting to the audio peripheral device, instruct them to connect the microphone, PC speaker and other audio devices to the correct system plug-in. SoundMAX 4 XL also provides a "virtual dashboard" that allows users to easily manage audio controls for optimal performance )", and an enhanced audio wizard that allows users to quickly install their audio peripheral devices. Maybe friends will soon be able to enjoy the b

alarm configuration range. The modem returns (255), (0 ).Note:In some countries, you cannot use the explicit Bell function. + VGT = N Speaker volume controlValue Range: 0-255.N = 0 the modem automatically controls the volumeN = 128 rated volume level sent to the speakerN> 128 increase the volume to exceed the rated levelN At + VGT? Returns the current speaker volume level.At + VGT =? Returns the range of supported volume levels. +

recording phrase "A cold dip restores health and zest" The API captures only "a co" and is incorrectly matched to "Aiko".So how do we deal with this problem? You can try calling the Adjust_for_ambient_noise () command of the Recognizer class.Now we have the phrase "the", but now there are some new problems-sometimes because the signal is too noisy to eliminate the effects of noise.If you encounter these problems frequently, you need to do some preprocessing of the audio. This preprocessing can

How to use the flying input method? When the input method is set to fly Input method, you can click on the status bar of the Voice input button (shortcut key: F6), as shown in the following figure: Message Fly Input Method It will pop up after clicking. Voice input is spoken to the microphone at this point. Click the X button (shortcut: ESC) to close the speech bar. Message Fly Input Method When you first enable speech, y

Cool K song is a powerful computer K song software, a lot of users in the song through the cool karaoke software singing, when the microphone opened, but there is no sound problem, some users will cool K song software after the test, found that the microphone can work properly, For the user to the problem we can basically out of the microphone reason, then how to

First, make sure it's not a microphone problem and that the microphone works in other software or games. 1, put music, others can hear, but on yy I can not hear: this situation is likely to enter the selection of the mix, the microphone should be good, the back of the red box inside the reverberation, if the hook, please cancel. 2, may be Mike was turned

, locate the Windows Audio service and double-click, in the properties that appear, "Startup Type" select "Automatic", "Service status" select "Start", click "OK" below, and then open the player to test whether the audio problem is resolved. 4. Realtek Audio Manager is not set Take Win7 as an example: detect if the Realtek audio settings are normal. Click the Control Panel item, click the Realtek Manager item, click the Jack setting in the upper right corner, and check the Disable front panel

Take the old style innovation SB Live5.1 version For example (Innovation Other series sound card can also refer to Settings) 1. First install the hardware of the sound card this thing is inserted in the computer motherboard PC slot (and network card parallel to the 3 slots can) insert the method as shown: 2. Then plug in your mic and headphone microphone to plug in the middle of the pink hole, headphones plug in the second green hole, as

How-to Tutorials 1. Click the inverted triangular symbol on the right side of the microphone before Qt enters the room. Select Speech detection 2. Select the appropriate sound card in the sound input and speak If the QT display system successfully detects sound input, select Next. 3. Select the appropriate sound card in the sound output and click the Play Test Tone button to test the selected playback device I

Take the Soundmax (RealtekAC97 and Soundmax settings) as an example of a sound card. 1. Right-click the system tray Volume small icon, as shown in the picture: 2. Click on the playback device in the above picture to view the playback device of this machine, as shown in the picture In this figure, right-click the blank box and select Show disabled devices to display all disabled devices. If you are unsure if your speakers are normal, you can select the speakers and righ

http://blog.csdn.net/educast/article/details/2894892Two real-world examples:1, B Super: Everyone has done a physical examination of the B-Super bar, B-ultrasound can be detected through the belly of your internal organs of the physiological situation. How is this done? B-Ultrasound is a B-type ultrasonic, it can through the belly through to your body to launch B-type ul