Modern computer technology often has a lot functionality and is equipped for the most stringent user requirements. But this is only in the situation when the PC user has acquired one of the most latest models and enjoys all the "blessings of civilization." But it happens when you just need to use a microphone to transmit information, and it is either broken or simply not there. In principle, this does not matter, because we know how to make a microphone from headphones, and in this article we will also help you deal with an urgent problem quickly and easily. We'll also show you how to make a microphone from scratch.

No soldering

In fact, you can buy such a device in advance if you plan to use such a function when communicating via a PC. The device will be inexpensive. But if this is not your way, then we will now figure out how to make a microphone for a computer out of headphones. Moreover, this is a fairly simple process that does not take a lot of time and labor! So let's get down to business.

Instructions:

• Plug the headphones into the pink jack. This jack serves specifically for a microphone. Of course, plugging headphones into the microphone jack is wrong, but we will try to use our headphones as a microphone.
• Then click "Start" - "Control Panel" - "Hardware and Sound". In the sound section, find “Management sound devices”, And then click on the“ Record ”section.
• Then - in the "Recording" section you should definitely see a device named "Microphone".

Important! If this device missing, then you did something wrong, try reading this manual again, doing everything correctly.

• Next, you make this device the “Default Device”. To do this, click once on the device, and then click on the "Default" button.
• Then, in the “Use this device” column, pay attention to the “Use this device (incl.)” Column.
• Next, go to the "Levels" section and slide the slider to the very end.

Important! In order to check the performance of a microphone made of headphones, simply put a checkmark in the place where it says “Listen from this device”.

Important! Problems may arise during the connection and configuration process. And so that you do not have to spend a lot of time looking for their solutions, we suggest that you immediately familiarize yourself or save yourself the information from our articles:

Theoretical information on electret microphones

Today electret microphones have almost completely replaced other microphones. This indicates that, with a relatively low price, they have a flat frequency response, low weight and high reliability. If diminutiveness is extremely necessary, then by given property there is no equal to them.

Electret microphone is a classic capacitor, one plate of which is made of a fairly thin layer of polyethylene film located over the ring. The film is subjected to the process of bombardment with a beam of free electrons that penetrate onto short distance, due to which a space charge is released, which can persist for a long time. This type of dielectric is called electret, for this reason the microphone is called "Electret". A thin layer of metal is also applied to the film, which is used as one of the electrodes.

Do-it-yourself electret microphone - secrets of making

To work you will need:

• Capsule from an electret microphone. By and large, it is quite easy to get it out of an old Chinese tape recorder or an outdated landline phone.

Important! The larger the capsule diameter, the greater the low frequency range.

• A piece of flexible thin wire.
• Ordinary 3.5 mm jack plug.
• Plastic syringe barrel.
• A small paper clip and a piece of foam.

So, let's get down to the process of assembling a microphone for a PC with our own hands:

1. Cut a small amount of the syringe barrel from the side where the needle itself is attached (approximately near the 1 gram pointer) using a utility knife.
2. Remove unnecessary markings from the surface of the syringe body with acetone or other solvent.
3. Sand the trimmed edge with light grit with sandpaper.
4. Slide shielded flexible wire through the hole and make a small knot.
5. Then, solder the capsule so that the shield of the shielded cable connects with the metal case.
6. Insert the primer into the housing, and then click the location where the needle was previously inserted using the foot of the standard clerical clip.
7. On the other side of the flexible shielded wire, solder a 3.5 mm jack plug, with the right and left channels connected together.

By and large, the microphone is already completely ready, but let's make another aesthetically important detail from foam rubber - a windproof cap:

• Cut a square piece of foam with a knife.
• With absolutely any sharpened pipe, make a neat cylindrical indentation, rotating the tip from the inner surface of the pipe.

Important! For these purposes, sections from used broken telescopic antennas, which you can sharpen with a scalpel, are excellent.

It is very difficult to do without a computer microphone now, you cannot use it without voice search, you will not be able to chat with a friend via video link. However, not all computers have built-in microphones; moreover, they often do not have very good sensitivity. This problem can be solved quite simply - assemble the microphone yourself.

Scheme

The circuit is extremely simple, containing only two resistors, two capacitors, a transistor and an electret microphone capsule. Almost any low-power transistor can be used n-p-n structures, for example, KT3102, BC547, BC337. You can get an electret microphone, for example, in a broken headset, telephone receiver, or you can buy it at a radio parts store. The sensitivity of the microphone will greatly depend on this element, so it is advisable to take several and check which one is best suited. The advantage of this circuit is that it uses phantom power. Those. sound signal transmitted over the same wires as power. If you take a voltmeter and measure the voltage at the microphone input of the computer, there will be about 3-4 volts. When connecting the microphone circuit, this voltage should sink to the level of 0.6-0.7 volts, thus, an external power source is not needed and there will be no extra wires at the workplace.

Assembling the circuit

The diagram contains a minimum of details, so it can be assembled by surface mounting. But, keeping to tradition, I etched a miniature printed circuit board... Tracks can even be drawn with a marker or nail polish. Several photos of the process:

Download the board:

(Downloads: 206)

A microphone capsule is soldered on one end of the board, and a shielded wire on the other. Please note that the wire must be with the screen, otherwise the microphone will be scary to make noise. The braid of the wire is soldered to the minus, and two inner veins are connected and soldered to the output of the circuit. Be sure to observe the polarity of the microphone capsule, otherwise the circuit will not work. One of his conclusions goes to a minus, and the second to a plus. Determining the polarity is very simple - you need to ring the leads with the metal capsule body. The pin that connects to the case is negative.

Assembling the microphone

For ease of use, the board with soldered parts must be placed in a suitable case. Because the board has a narrow elongated shape, then an ordinary ballpoint pen can be used as a body. To do this, you need to pull out the writing rod from it and check if the board fits in width. If the scheme is assembled by surface mounting, then it can be given any shape and there will be no problems with capacity. In addition to a pen, any elongated object will work well, be it a marker or a simple plastic tube.

Almost all home devices, from phones to laptops, have their own microphone for communication. Especially zealous fans of such programs as Skype or Mile-agent even buy stationary microphones for themselves to improve communication with subscribers. Separately standing devices, wireless headsets, mechanisms built into the case - today the microphone can take on the most bizarre forms. However, like all devices, it can suddenly break, which is why it will be useful for everyone to learn how to make a microphone from headphones.

In most cases, the owners simply dispose of a failed electrical appliance and go to buy a new one. But in this matter, there is no need to rush, because assemble a microphone conventional headphones everyone can. To turn headphones from your phone into a high-quality microphone for your computer, you will need to prepare suitable materials, namely:

• headphones of any company, the simplest complete headphones from the phone will do;

• 3.5 mm plug, better known as "jack";

• high-quality wires for connections (carefully examine their integrity, do not damage the insulating material);

• a soldering iron of sufficient power;
• a sufficient amount of solder, rosin.

You can choose from two options. You can use the headphones directly, or you can turn them into a full-fledged headset. The procedure will not take you much time and will not cause difficulties.

The first way

Making a microphone out of old headphones is the most economical way out of the situation. Upon completion of the work, you will be able to receive not only a new device, but also breathe life into unnecessary "trash". First you have to do some soldering work.

If you strictly followed the instructions and did not overdo it with solder, which could cause a short circuit in the soldering points, then you will hear slight clicks when you connect the headset to the laptop. This means that the microphone is working normally.

Second way

This is a much less costly way of making a microphone at home. To do this, you need a telephone, computerBluetooth adapter and headphones included.

Connect mobile device with a computer via Bluetooth - connection. Plug a headset into the phone jack and you have a working microphone. This method will allow you to quickly restore the lost connection, but it is not recommended to use it on an ongoing basis.

This scheme is used as a temporary replacement when there is no time or money to purchase a good microphone.

Such a system is notable for its instability, because the Bluetooth connection can be interrupted at the most unexpected moment. Added to this is the need to constantly monitor the battery charge in the phone. Connecting it to an outlet will add wires, which may cause difficulties in use.

As you can see, you can make an excellent headset for communication from ordinary headphones for the phone, which are included in the kit for most models. Of course, it will never replace a real microphone. DIY devices can significantly be inferior in quality the transmitted sound to factory counterparts. However, with quality parts on hand, you can try putting together a real microphone.

You will need

• - shielded audio cable;
• - high impedance earphone;
• - low impedance scientist (you can use a dictaphone or a player);
• - radio broadcast speaker;
• - sound transformer;
• - soldering iron;
• - rosin;
• - tin;
• - insulating tape;

Instructions

The microphone can be made from a high-impedance earpiece, which is used in headphones. To do this, use a shielded cable to connect it to the appropriate connector of the amplifier or mixing console. Such a microphone is quite suitable for broadcasting or recording speech. But for recording or amplifying a piece of music, the quality will not be sufficient. If you want a high-quality wide-range microphone, make it out of a "radio point" broadcast speaker.

Take the radio broadcast speaker and open its case. Inside, in addition to the speaker itself, you will also see an output speaker and a transformer, as well as a variable resistance resistor. You don't need the resistor now, so unsolder it from the circuit and remove it from the case. Connect the speaker to the transformer directly.

Unsolder the plug and wire from the high-impedance winding of the transformer and, in their place, connect a shielded wire with the appropriate connector for switching on to the microphone jack of the recording or amplifying device.

This microphone can be improved somewhat. For example, you can screen it. Cover the inside of the translator housing with steel sheet or foil paper. You can use, for example, foil from cigarette packs. Make electrical contact between this shield and the braided shield of the audio cable, for example with a screw and a contact strip. This will eliminate interference from external electromagnetic fields.

The sound quality of such a microphone can also be improved. Connect a tunable RC filter in series with the high impedance winding of the transformer. This filter consists of a 510pF capacitor in parallel and a 1mΩ variable resistance. Attach the resistor to the front panel of the radio in the place of the previously removed volume control. Solder the filter and, connecting to the amplifier, select the filter resistance according to best quality sound.

In a circuit with a matching transformer, you can use any low-impedance speaker, as well as an output transformer from any tube receiver. Instead of a speaker, you can use low-impedance headphones, including those from a telephone set or a player. If you take a miniature earphone from the player, then the whole structure can be made portable by placing the earphone itself in a metal tube and styling it like a corded microphone. In this case, place the step-up transformer in the immediate vicinity of the amplifier. Make all connections in this design with shielded wire.

Preamble:
Came "Boney-M" (very famous at the time VIA) to Moscow on tour. At the airport, as usual,
the luggage with the equipment was "loved" and the reverberator (the apparatus that makes the echo) just disappeared.
Well, there is nothing to do, we went to the Mitinsky radio market for a new one. Check before buying.
Into the microphone:
- Once.
From speakers:
- One, one, one ...
Have taken.
Concert. They begin to sing:
- Sunny ...
From speakers:
- One, one, one ...

Actually the plot itself is below.

My cub from a broken tank calls me and complains that he has big problems with a microphone on his laptop, he is not heard, etc. etc. and that because of this it is impossible to shout commands in a tank battle - in short, I advised him to study the language of the deaf and dumb ...
However, my father's feelings after drinking beer somehow got to my conscience and I had to think, can the Chinese, with their sophisticated mind, come up with a manly USB microphone? Of course, it is known that the Chelyabinsk men shout right at the YUSB - but all the same ... It turned out that there is such a miracle - then as usual: basket, payment, shipment, waiting, receiving.


The microphone itself is created in the now fashionable form factor "a la half-round fit".


The connection happened without any problems and tricks, I tried to poke into it - in response I received the same thing. This is not a gogol translate for you, which translates "fuck you" as "fuck you" - that is, there is no distortion of the voice, there is also no obvious acoustic connection - although it tries to "whistle", the sensitivity is normal - you do not need to shout.


Otherwise, of course, you can read on the packaging how good it is - however, everything written there is an absolute lie.
1) connects via USB and blah blah blah half-true
2) the presence of noise suppression filters SEMI TRUE
3) the presence of the LED FALSE
4) the presence of a stand FALSE

The specifications are probably close by an order of magnitude, but for such a microphone it is unlikely (or rather, for its physical dimensions) and it is written that there is another 8 "cable - OBVIOUS LIE


However, this was not a matter of principle for me - the baby just needs to hold out until the holidays, and there I will climb into the laptop with unwashed hands and bring my own microphone into the senses. In a word, I recommend buying.

I plan to buy +29 Add to favourites I liked the review +54 +125