Mechanisms of effect of background noise when using microphoneand can be different. In most cases, the causes of this phenomenon lie not so much in the microphonee, as in the intermediate electrical circuits and devices through which the audio signal.One of the most frequent reasons for the emergence of a stable low-frequency background is the connection of a passive microphone (without built-in pre-amp) to the radio is not shielded cable. In this case, the background due to the emergence of the induced voltage, comparable in amplitude with the signal of the microphoneand, from consumer lighting networks. The frequency of the background, respectively, equal to the frequency of the mains voltage (50 Hz). To avoid such problems, you need to use to connect the microphoneand braided cable. The braided cable should be connected to the "body" (a zero power circuit) of the amplifier.Background caused by interference from household electrical networks, can occur when using shielded cable. Often the background is shown only when you touch the enclosure or separate metal housing components microphone. This means that the signal cable has lived a galvanic connection of these parts. The background signal is induced in the human body and in contact with the microphoneohms input amplifier.Source of interference can be various home appliances, e.g. mobile phones. Often this background is evident not constant, and periods of various duration (subject to certain subsystems of the devices). The induced electrical oscillations of audible frequency range, typically are multiples of harmonics of the original RF signal, or the result of dividing the low-frequency component of the filter formed by the parasitic inductance and capacitance of the cable connecting the microphone.
Advice 2: How to configure the microphone in Skype
Phone conversations through Skype have become a cheap alternative to landline and mobile phones. In addition to the standard audio call program allowed us to make video calls before operators of other networks.
Run the program “Skype”. Log in, wait for the download.
In the program window, locate the toolbar. Select "Calls", then "sound settings".
In the "Microphone", select the device that will be receiving the signal. Adjust the volume and automatic usage below.
To check the settings at the bottom select the option "Make a test call to Skype". Follow the instructions of the Manager.
In the "General volume" (Volume Control) make sure that under "Microphone" (Microphone) is checked "Off." How to use for communication over the Skype headset, microphone or speakers? How to adjust the sound settings on my computer and in Skype for Mac OS X Lion? From the user community Skype.
Try to record your speech through the microphone and then play back the recording. If you can't hear your voice again, open the Sound window (see above) and try to adjust microphone settings in order to hear your voice on the test record. If you hear a recording, check the audio settings in Skype.
Advice 3: How to set microphone web camera
Webcam is one of the essential attributes of most computers. Today is no surprise webcam with integrated microphone. Simply plug in your device to the computer, configure the program and you can communicate with people regardless of distance. All you need to do is properly configure the microphone.
You will need
- - CD with software for a web camera;
- - ACCORDING to the sound card.
First, you need to connect a web camera to your computer. Included with the device must be a disk with the software. Install it on the hard disk of your computer. With its help you can configure the settings of the webcamera.
Launch the installed software. Any software for the webcam should be "Settings". In this section, you should find the option to "microphone Settings". Accordingly, the microphone can be adjusted sound. Also in the software menu to open the "audio Volume" and adjust the microphone volume.
In addition, you can adjust the microphone sound by using standard operating system tools. To do this, open "control Panel", and in it a section that is responsible for sound settings. In different versions of operating systems the section name can be different. For example, in Windows 7 it is called "Hardware and sound".
Next you need to select "volume setting". In the list of devices there should be a microphone. Select it. You can then set the desired sound level.
If you plan to use a webcam to chat in Skype, set the microphone volume directly in the program. Install the application. After its first launch window will appear where you can configure some settings. Click with the left mouse button on the "sound Check". Then in the next window, select the microphone and adjust the sound level.
If the sound card you installed the driver more and software, you can adjust the microphone a webcamera with it. All you need to do is start AT the menu to select the device ( in your case the microphone) and adjust the sound.