Headphone output into mic input?

I've got a cheap voice changer that is hard-wired to a computer-style microphone. I cut off the mic and added a 1/8" miniplug adapter, so as to increase flexibility. I need to connect the powered headphone output of an mp3 player to this voice-changer, what is the easiest way to do so? I tried an attenuator I had lying around, but got no results (are attenuators one way?) is there a good (cheap) solution to this problem?

Topic by gschoppe   |  last reply


How do i rig a simple mic to a speaker.?

This year I'm making my own Halloween costume and the head piece I'm making will not have a good voice projection through the mask. I just want to put a mic on the inside and incorporate a small speaker on the outside.?

Question by numunk   |  last reply



Mic amplifier for ambient sound?

I need a way to pick up distant sound at the mic. I hear output only when i talk too close to mic

Question by Ejay11   |  last reply


codevison to programe atmega16 mic

I m using codevison to programe atmega16 mic for a lcd display.....dont knw d prog....could u help me with a test prog?

Question by lcdproject   |  last reply


Bluetooth Transceiver for headsets with a mic

Hello Everyone, I would like to build a module that is a Bluetooth transceiver that I can connect to a two-way radio. I have seen many transmitters for Bluetooth but they don't have the correct connection. I need a Mic/audio/Ground type. Can someone here point me in the correct direction. Thanks Hobs

Topic by PilotHobs   |  last reply


Microphone sensitivity range?

Can a normal microphone as present in most headsets detect noise levels below and/or  above human audible frequencies. And if so  is it possible to see the audio waveform for such noises using such a mic?

Question by muhammajunaid   |  last reply


how can i build a microphone preamplifier?! Answered

Emmm, hi . I need to make a low noise/simple microphone preamp for both electret and dynamic .it would be perfect  if it could be powered with something other than battery , like an adaptor or 1394 port form my computer , mic in jack or anything else. I have an external sound card with +48v phantom power switch (ECHO, Audiofire4). can anybody help me in making any of them (electret and dynamic)? and ... ics that i have now , are a little old. thanks alot... 

Question by whooms   |  last reply


Xbox 360 mic like wii speak?

Hi i was wondering if anyone knows how to turn a 360 mic wired or wireless into a mic like the wii speak. It would need to be able to output the audio louder and have a more sensitive input. Any Help?

Question by DMACHINE188   |  last reply


Help identify points on circuit board?

Hi, I got a 3.5 stereo adapter and mic cable for a cell phone. I want to convert it from the non-standard cellphone jack into a 3.5 stereo jack so I can connect it to the mic jack on my computer. Is it possible? I need to figure out what the wires lead from. There also seems to be a fiber optic(?) wire. Circuit pic: http://i71.photobucket.com/albums/i148/phillyj101/circuit.jpg mic/switch pic: http://i71.photobucket.com/albums/i148/phillyj101/P8270456.jpg

Question by phillyj   |  last reply


Microphone how?

I was wondering, How could I turn an old speaker into a microphone?

Topic by batboy61490   |  last reply


Wireless headphone with Microphone

Can anybody tell me how to make a wireless headphone and microphone. Both microphone and headphones should be wireless. I found that one can buy a wireless headphone or a wireless microphone, but not a combination of both. Why I need it. I make long phone calls, during which I need to walk around. If I use a cordless phone, I have to keep holding the receiver with one hand all the time. If I use a speakerphone, everybody around listens to the conversation. Therefore I need one wireless headphone with mic.

Topic by anilsaxena   |  last reply


Wiring a 2 way radio headset to also record audio?

I am a hang glider pilot and like to take videos during flights. I would like to add narration and the back and forth communication with my chase driver as part of that. I have a headset in my helmet that is wired to a ham radio for that communication. The jack to the helmet is a three conductor, 1/8" jack that goes to the earphones, microphone and a common ground. There is a push to talk switch that trips the radio to transmit which is between the helmet and the radio. What I would like to be able to do is put a jack/splitter inline with the existing jack to then go into the mic jack on a voice recorder to get three things; Radio audio (receive), Radio audio (transmit) and me just talking into the headset mic - Narration.Not sure how well I am explaining this and I could just experiment, but I am thinking it's not as simple as just wiring stuff together. I'm good with a soldering iron, but no EE by a long stretch. Any thoughts? Thanks

Question by hang4   |  last reply


how to build a shockmount for this mic holder??

i want to build a boom mic,i got everything BUT.....the mic always slide from the holder. i want to make it stay put with a mount but how? heres the holder http://shop.milgreta.lt/images/cmc002.jpg

Question by mastermakoko   |  last reply


my mic for the xbox stopped working Answered

We bought a new headset but it still doesnt work and we have one of those fan attachments for it and ive only had it for three years

Question by taowyman   |  last reply


how to make a direct mic to speaker setup?

I am trying to run a microphone directly to a speaker and I am having some troubles with how to integrate battery or 12v DC power into it. Any suggestions would be greatly appreciated.

Question by nrepak   |  last reply


How do I replace a mic with an aux input? Answered

I just bought a small Fm transmitter kit that doesn't come with an aux input. Is there an easy way to replace the mic with an aux input or an aux wire? Thanks a lot!

Question by DELETED_DELETED_DELETED_16nato   |  last reply


Arduino LM386 Pre-Amp for Mic ?

I am trying to (pre) amplify the signal from an electret microphone using an LM386. The output goes into the Arduino analog input 5. I have tried multiple circuits, but none of them succeeded. Either the value settles at some constant or its 0/1023 and even when its in the 500- 550 range, the value doesn't seem to be changing with varying sound levels. I tried these circuits: http://wiring.org.co/learning/basics/microphone.html https://randomskk.net/projects/lightstrip/schematic.pdf http://www.josepino.com/circuits/mini_amplifier_lm386 http://www.diyaudio.com/forums/chip-amps/114698-preamp-using-lm386.html and a couple of more ones. I only have an LM386 on hand and cannot change it, as I need this to work out ASAP(in 2 days) for a science fair project. Hope you guys can help me on this. Kabir

Question by mhkabir   |  last reply


How Can I Make A Controller with a built in mic

My xbox 360 headset was crap when i bought 360 the ear piece fell of so i cut the end of the wire attached to the headset.#3 is gone And The Wire In between #1 And #2 i have. So how could i build it into the 360 controller?

Topic by nameless   |  last reply


Is it a good idea to wire an ELECTRET mic in parallel? What are the advantages and disadvantages? Answered

I already made a prototype of a low-noise desktop microphone (with an internal 5 stage transistor preamp). It only had one ECM capsule inside. A few days later I found a couple of pictures of a certain microphone with two ECM capsules wired up in parallel. It made me wonder, will it increase the sensitivity of the mic while reducing noise or will do the exact opposite? Is is a bad idea to hook six of these in parallel? Sorry, I'm not an expert when it comes to microphones. Before I post a guide, I wanted to make sure of what I'm saying.  The Reason: If you are familiar with the Blue Snowball USB microphone, you'll be surprised on what's in it. I recently discovered that it has two "Electret Condenser Mic Capsules" soldered in parallel. I thought there was something special about the Snowball since the reviews went crazy (4 1/2 stars on amazon)! I was expecting a huge diaphragm, but no, it only had two tiny ECM mics soldered on a Preamp + USB DAC. Lesson learned! Never underestimate an ECM mic.  ______________________ The picture is my prototype, it's working great right now. Luckily, the 5 stage preamp is giving zero noise. I'm planning to add a USB D.A.C. and an ECM array on my final version.

Question by ASCAS   |  last reply


Can i connect two xbox 360 headsets together so two people can hear and use the mic during online game play?

What i want to do is basically "piggyback" one set off of another i have the basic wired headset that comes free with 360 purchase. This is my first time on the site so sorry if im not being clear enough! any other questions just ask

Question by schmit22   |  last reply


Blue snowball mic and windows 7?

Alright, so today I received my new new Blue Snowball only to find it is incompatible with windows 7, or at least that's what I thought. After searching through the web for a fair few hours I found that many people had got their mic working with windows 7 yet there was no driver or firmware update available to download. I managed to find a firmware update although this stopped part way through demanding administrator rights which I gave it but it still wouldn't work :L I'm using the new macbook pro with retina display if that helps with motherboard compatibility. If anybody has a blue snowball I would really appreciate a download link to the driver you are using Thanks in advance Will

Question by freerunnin1   |  last reply


A preferred source for buying microphone elements?

I have a vintage microphone that is in pretty poor shape. The coil inside the element has broken off on one side and I would have to slightly unwind the coil in order to be able to pass the magnet wire back through far enough to reattach it. On top of that, the transformer inside the mic was wired in a very odd manner and someone has clearly tampered with it, so who knows what has been done to it. I am considering buying a new dynamic mic element and replacing the old one with it entirely. Can anyone recommend a preferred source for buying decent mic elements without having to but a whole microphone? At that, anyone know where to buy vintage mic elements?

Question by randofo   |  last reply


Ideas for building a mic/camera slider

Hi Guys I'm looking to build a camera slider like this: http://www.youtube.com/watch?v=uewMphsBamk&feature;=fvwrel This one is silly expensive! I want something on which I can mount a micophone stand and move it a 1/4 inch left or right over a distance of no more than 7 inches at the touch of a button. Any ideas? Cheers Kieran http://i1056.photobucket.com/albums/t378/kizzertron/57speaker.jpg

Topic by kizzertron   |  last reply


microphone wiring?

Ok i was wondering if i took a microphone that was real cheap from walmart and take the male part off the end of it and put a female part so that way i can plug in a dual male sided cord to it and then to my computer, more or less im wondering, can it work like that? and then i was wondering if there is a program that when i plug the mic in that it works like plugging a guitar into an amp, as in it plays the input to the computer outloud without being in playback from a recording

Question by ClemensY290   |  last reply


Simple 'Megaphone' like voice amp?

If I wanted to create a simple voice amplification unit, what materials would I need and how would they be wired?

Question by GreenPhantom   |  last reply


Headset Confusion?

I bought a turtle beach cable to use my x31 on my pc. I managed to finaly get the mic to work but the sound  quality is less then that of the wirlress one I bought the cord to replace. Im not sure if its the 3 different levels it go's through or faulty cord.  Any suggestions? I allso have 3 audio jacks. Anyone have a clue what the third could be for? 'Info http://www.turtlebeach.com/products/xbox-gaming-headsets/ear-force-x31.aspx http://store.turtlebeach.com/ps3pcchatadaptercable-cab.aspx http://www.newegg.com/Product/Product.aspx?Item=N82E16834220715 Gracias

Question by zigzagchris   |  last reply


Can I replace/modify the Vado HD's internal mic?

I just got a new pocket camcorder; the Vado HD. It's the second generation, which means it has no input jack for an external mic. Could I pop the camcorder open, remove the internal mic and solder on an audio input jack in its place? would there be consequences?

Question by magnum-colossus   |  last reply


How to join a 3.5mm Jack to a Microphone ?

I want to make it to use it as a Mic.

Question by Milin 18   |  last reply


How to make a simple microphone circuit? Answered

I want to make a simple circuit with a microphone that just takes your voice and sends it to a speaker. I just want to understand how to hook up a mic.  I know it will either be very quiet or silent, but like i said, i just want to know how to connect it. (I already know how to make the amp.)Thanks in advance. -Julian

Question by jules15   |  last reply


Public Address System build Project

Salam and Greetings everyone, I am a university student and I need to build a good quality PUBLIC ADDRESS SYSTEM using simple 3.5mm jacks for mic input and spkr output and giving output on 2 to 5 speakers and controlling the output to speakers through switches enabling individual use and all at once  I would appreciate all help in form of advice, suggestions, links to websites and blogs, or text files videos anything... Thank you everyone in advance....

Question by General Talha   |  last reply


Blue Microphone Recognized by Pc But Not Working?

Okay so here is my problem I just bought a blue SNowball for my Windows 7 pc I know alot of people have issues with it but heres my problem. I got it plugged it in it says installing drivers then says failed to install drivers yet it recognizes it as a usb audio device but it just shows up in my devices and printers as unassigned with a caution symbol next to it. The thing is there are no drivers for this mic because it is plug and play, I also have tested it in different usb ports to no avail if anyone could help me thatd be great.

Question by Pinion Props   |  last reply


How do I combine multiple audio signals? Answered

I'm trying to splice in the output from an mp3 player into the microphone of Xbox headset. I've had no luck simply inserting it into the circuit, is there something else involved? Sincerely, Bean

Question by meanbean   |  last reply


how do i start a project using a microphone to cause a servo to "sweep" depending on the sound level?

I really want to make a servo rotate like when using the sweep code but with a microphone instead of a potentiometer. the servo would move depending on the decibel level and return to it's default position once the noise stops. i can code myself but i don't know where to start and i can't understand the microphone related code parts, i could really use some help with getting started, i would be greatful on many levels. EDIT: i scraped this together but it doesn't work exactly how i want it to #include int micPin = 1;    // select the input pin for the mic input       // select the pin for the LED int micValue = 1;  // variable to store the value coming from the mic Servo servo09; void setup()   {                        servo09.attach(9);    } void loop()                     {     micValue = analogRead(micPin); // use what ever threshold between 0-1023 you wish to switch  the led         if (micValue > 2)     {                         servo09.write(10);         delay(1);     }     else     {                         servo09.write(100);         delay(1);     } }

Question by katman101 


Will this schematic work for a simple microphone with a two way toggle and LED's to show on/off status?

I don't know resistance needed I'm pretty sure once I plug the 3.5mm to 3.5mm cable into the female jack that it gets 5 volts of power, otherwise any help in this design would be appreciated as I'm trying to make a microphone that doesn't have its own cord to bypass having to solder or replace a microphone every time my cat feels the need to chew small wires.

Question by tgreathouse   |  last reply


building a HD Audio front panel for my PC. Audio circuit?

Hi! I have problem with my computer. the motherboard has HD-Audio but the front panel is the usual AC97 standard. You can change the BIOS config so the front panel audio connector acts as an AC97 one, but then the problem is the speakers connected to the back keep playing even if you connect a set of headphones to the front panel. The reason is the audio jacks used for HD-audio are different from regular jack connectors (and very rare to find!). While the insertion of the plug in a regular jack connector results in breaking a circuit (and so, physically muting the loudspeakers), in an HD Audio jack, the insertion of the plug results in closing a switch (sending a signal to the driver ordering to mute the speakers by software). I managed to create a sort of HD audio Jack by combining a regular jack connector and a zero pressure micro-switch so when the plug enters the hole, a tip inside the hole closes the micro-switch. I wanted to make a good quality front panel so instead of just wiring the jack connectors (and micro-switches) to the cable, I decided to add an EMI filter. I took the circuit from this doc: http://www.formfactors.org/developer/specs/A2928604-005.pdf and more precisely from fig 6 at page 25. The circuit uses two 220 pF capacitors and two inductors for each jack connector. In this aspect the circuit is identical to that proposed for AC97. The problem is I have no idea what inductors to use or how to ask for them at the shop. All the diagram says in a footnote is: ZL should be 600 Ohms or greater @ 100MHz with a low Q (broad Impedance curve over frequency) but not even the guys at the shop knew what piece to give me. So what I did was to cannibalize the inductors from two cheap promotional radio receivers with jack connectors for the headphones and use them for my circuit. After all, they perform the same function: filter the audio signal at the headphone connector so I supposed they should have the correct values I needed. But my circuit is very noisy! headphones have a constant electronic background noise (that seems to react to things like mouse movements, hard disk activity or whiteness of the screen) and microphone has a lot of noise (of course I'm using very good quality mic+headphone). The cables are audio cables for front panel audio so they are supposed to be correctly shielded so the problem is in the circuit at my custom board. I would like to make a tutorial (including HD Audio connector construction) once the front panel is working properly but I don't know how to fix it. Any ideas?

Topic by jedikalimero 


What kind and how many mics needed to record on cassette tape on Emerson model AS2650?

Bought an old Emerson AS2650 Radio,Phone,Cassette Recorder Player.  Want to record externally from a mic; but manual just says to plus in "2" mics.  Why two and is there a certain type?

Question by frkdrtap   |  last reply


How to make my dynamic mic pre-amplifier circuit work? Answered

Hello everyone, recently I'm making a sound box that have a sub-woofer sound system that works pretty fine, but for my usage I need to add a dynamic mic input which needs a pre-amp. before sending the mic signal to the sub. aux. I found this circuit and tried to apply it, I didn't get anything at all, but the surprising thing that when I connected an electret mic, it worked like a charm ! So, what is the problem I'm missing ! if anyone have any Ideas or better circuits for my purpose please feel free to give any ideas, thanks :) Note : even the electret mic didn't work before I canceled the capacitor after the mic input, I'm using uA-741NC @ 12V.

Question by Hawk-Eagle   |  last reply


Creating heart beat from mic input?

Hai guys.. I'm doing a project to get the heart beat through a mic... So I connected the top end of a stethoscope to a tube and the other on of the tube to mic (seal tight). The mic is an Arduino mic module. Using anlogread function I'm getting an input with lots of numbers and when plugged into to direct audio to my Mac I hear the heart beat. What I want is to see the bpm from the reading that I'm getting from the Arduino not just random numbers. Is there any way from doing this? Thank You in advance... 

Question by RamalN   |  last reply


How do i wire a condenser mic into my audio input of my PC/Computer? Answered

Ok, I answered it myself but I looked long and hard so hear is one option for connecting a condenser mic to a pc. This is 20 year old microphone that shipped with my family's Apple LC in 1992.  The mic works well with one of my laptops audio card... Not sure what the Zenner diode value is but its probably pretty small. I measured the voltage across the mic + to ground and it was 3.5volts. I saw another guy that only found a diode on his condenser mic so maybe newer audio cards can work without all the extra parts...

Question by hydronics   |  last reply


Walkie talkie mic and headphone 3.5 mm sockets

Iam wondering if I could get two walkie talkies (2 way radios but I prefer calling it walkie talkie) and add two 3.5mm jacks one for ear phones and one for a mic.  Using a splitter 3.5mm for the sockets, a 3.5mm mic and a 1m extension  for the mic so I can put the walkie talkie in a pocket. Can someone tell me if this will work please and any suggestions for improvements to my plan 

Topic by Ojsmudge   |  last reply


How to mod a "Sensational headset with mic for xbox 360"?

I bought a sensational headset with mic for my 360 and it doesnt work well. I bought it cheap on ebay for around 11 cents. I have another phone headset that works, but the earpiece rarely produces sound. I want to combine the headsets so i can hear through them and talk too. Any suggestions?

Question by mortuusvi   |  last reply


Adding Mic Input to a Flip Mino Camera?

I was looking to add a microphone input to my lilliputian Flip MinoHD. My current thinking is that I could just take the leads from the current, built-in, mic and run them to a two-position switch. From there I could then have a 1/8" input on one side of the switch and the original mic on the other. Then it would all be a matter of dremeling out a small spot for the input and the switch on the side of the body so that I could select which input to use.First of all, I'd like to know if that would even work. I've done electronics work before, but have never worked with mics, so for all I know I might just walking down the pathway to a voided warranty and a bricked Flip.Secondly, I was wondering whether there might be a method of bypassing the need for a switch, so that if there was no mic present the camera would use the built-in mic, and if there was, it would use the input.Any help would be greatly appreciated. I was a big follower of the original CVS camcorder hacking movement, and I'd love to see the Flip get the same sort of treatment.Thanks.-NickPS: Does anyone have any pictures of the internals of the Flip MinoHD? I've been looking around but can't seem to find anyone who's dissected theirs.

Topic by foxymcfox   |  last reply


How to make a preamp out of transistors? Answered

I am wondering how to make a simple and cheap preamp for a microphone for recording audio on the computer. I would prefer to use no chips. thanks, josh1324

Question by josh1324   |  last reply


How to attach button mic to batteries and a recording device? Answered

Looking for help in connecting a button mic to a cat collar that either has recording capability to a card or USB drive; or send signal by Bluetooth or another wireless alternative.  Thanks

Question by jscott14   |  last reply



Will a condenser mic work the same way as a 3.5 mm mono audio jack? Answered

I will be building an FM transmitter soon, and I wanted it to have a condenser mic with a switch that switches the input of the condenser mic, to the input of a jack that people could play music from. In other words, the user would be able to speak to the transmitter, flip a switch, and then play music through to the jack. My only question really, is whether or not it would work? Thank you for taking the time to read this, I really appreciate it. The attached picture is the schematic I am working off of.

Question by XBLmonster   |  last reply


i have 16 mic's from recycling computers(i-mac all-in-ones)what can i do with them? Answered

Im wondering how to hook them all up together & use it to record & tell witch direction the sound came from.or just something goofy looking.

Question by bigmark   |  last reply


can i a made 1/8" to 1/8 Mini Aux cable from a mic and headphones ?or...(i want this to connect my mp3 with my radio cd)

I dont have any audio shop near my place ... but i have a lot of headphones and mics ... i try to connect the jack of a mic and the jack of a headphone but it didnt work ... :P ...

Question by rockwave   |  last reply


Made an electret mic preamp circuit, but how to eliminate mains hum?

The circuit's purpose is to be able to listen to heart sounds and output it in a PC and the heart sound frequencies usually fall under 20 to 100hz. The problem is when i plug it in my laptop, i start to hear the hums. But when my laptop is just powered by the battery it completely removes it. Is there another way to eliminate the hum without having to run my laptop on my battery? 

Question by ilovesheldoncooper   |  last reply