The sound tag has no wiki summary.
2
votes
1answer
71 views
Do I need a RTOS?
My hardware would have a DSP with the following characteristics:
Sound generation (internal parameter will generate pure tones, white noise, filtered white noise or the sum of them).
I2C ...
-1
votes
1answer
52 views
Vibrotactile graphic equilizer? [closed]
I'm very new at this, but here goes: I work with adults who are both deaf and blind. I'm trying to basically build a graphic equalizer that has vibration motors instead of LED's. It would be worn on ...
0
votes
2answers
97 views
Darlington Emitter-follower used as a buffer
I have a circuit with a Darlington emitter follower used as a buffer between a common emitter amplifier and a low resistance load (speaker). i wanted to know if this arrangement could alone (with the ...
-4
votes
1answer
64 views
Why can't we record amp sounds from line out of amps when we can hear in headphones using line out? [closed]
Suppose there is electric guitar, and we connect it to amplifier (amp). When we connect our headset into line out of the amp, we can hear what we are playing. If so, why can't we record the sound out ...
-4
votes
1answer
83 views
I bought a used surge suppressor. When I plugged in my laptop, I heard a “pop”. Why? [closed]
I bought a American Power Conversion Corp. surge-protecting power strip today. It's a seven-outlet model; I found it at the thrift store for $4. It appeared to be in decent condition, though I did ...
1
vote
5answers
468 views
How to Generate a square, sine, and triangle wave with DC input
I want to make a simple synthesizer as a start to audio electronics. I want to start with a simple square, triangle, and sine, which the user can vary the pitch.
Is there a simple circuit to do ...
0
votes
3answers
82 views
Cheapest way to build or buy a remote controlled sound maker?
For my high school class's senior prank, we'd like to buy cheap prepaid cell phones (like these: http://bit.ly/VSqOk3), hide them in the ceiling tiles, and then call then randomly throughout the day. ...
0
votes
2answers
102 views
How to fix a broken Sharp CD-BA150 stereo with the help of a service manual? [closed]
I have a Sharp CD-BA150 stereo. Since the cd and tape decks are completely busted (doesnt play, rewind, etc.) and I have nothing to lose (I plan to throw it out anyways) I want to try to repair it ...
4
votes
3answers
251 views
simple audio amplifier
I did this circuit in my protoboard, and it worked for a while, but the quality sound was terrible, and suddenly it stoped working. Can anyone explain me in which part of the circuit i did something ...
1
vote
4answers
160 views
Headphones impedance and the SPL
The headphones A has an impedance of 32 Ohms.
The headphones B has an impedance of 250 Ohms.
Both of the headphones are similar by size.
Is it right that the headphones B will play quieter by ...
2
votes
1answer
141 views
Determine suitable clock speed?
I want to learn about good techniques on how to choose the suitable clock speed for the microcontroller for a project.
For example i want to create a device with a pic16f877 microcontroller that ...
1
vote
2answers
200 views
Using Audio Input of computer as Oscilloscope for Hobby Electronics
I just discovered an app for mac that uses the Audio Input of the computer and the AD-converter in the sound card as an Oscilloscope.
First, I was thinking this can't work... but theoretically, it's ...
-1
votes
2answers
82 views
Sound from picaxe [closed]
i have PICAXE-28 Project Board and PICAXE-28X1 IC. What is the easiest way to play music on those? I don't want to buy something that is already made, i want to make it myself, but I dunno how :D
What ...
2
votes
4answers
241 views
Playing a small MP3 file
simulate this circuit – Schematic created using CircuitLab
I'm creating a hand-held device with a momentary push button that will activate an LED and play a sound or MP3 (I didn't include ...
2
votes
1answer
138 views
What's cheapest way to make a sound?
We have a portable small toy which we want to make a sound on it when is connected to socket. I don't know if we must use a little speaker with a magnet or maybe we can make a noise with a mechanical ...
-6
votes
1answer
85 views
forgotten laundry stinks - electronic solution [closed]
I forget to move the laundry from the washer to the dryer. The clothes stink when left over night (this has occurred many times before).
The buzzer is short and weak therefore, I would like to add a ...
-1
votes
1answer
126 views
Looking for easy USB Sound Card Chipset [closed]
Does anyone recommend a chipset for a USB Sound Card (w/input), with readily available drivers for both linux and windows.
I am making a phone line tap to record dial modem calls in the field, for ...
-1
votes
1answer
263 views
In-line Sound Level Meter Circuit (with LED bar).
I am looking to create an in-line sound level meter (indicator). This would connect between the headphone audio out (from a computer) and a pair of headphones. I do not need to get a precise ...
0
votes
0answers
110 views
Sound level meter for a given range of frequencies
I would like to measure the quantity of noise. For example, I have found this sensor: http://www.phidgets.com/docs/1133_User_Guide
...
2
votes
2answers
189 views
technology to search small objects like pendrive, key-chains etc
I am a web developer by profession. few days back I lost 8gb pen-drive :( I don't it is in home or somewhere else.... So now I am thinking of a device which can be attached with small objects so that ...
-1
votes
1answer
219 views
Speaking words with Pololu 3pi Robot [closed]
At each instersection I play different music for the compass direction the robot decided to go. Any ideas how to get the robot to speak the words "West", "East", "South", "North"?
...
-2
votes
1answer
177 views
What is the cheapest way of producing audible sounds? [closed]
I am in need of producing an audible sounds in my circuit, when instructed by a microcontroller which it is attached to. So far, the cheapest way I have found is to use a piezoelectric style buzzer, ...
1
vote
0answers
223 views
Arduino adk: how to play music [closed]
I am fairly new to electronics, and as a school project, I want to make my own Android dock to use with my Galaxy Nexus running Android 4.1.1.
I am looking at how to output music using an Arduino ...
2
votes
1answer
160 views
MP3 Player, does volume affect power use?
When playing sound on a MP3 player to headphones, does the volume level affect how much power is used? Intuitively I think that high volume = high power consumption, and low volume = low power ...
1
vote
0answers
150 views
I am looking for a way to interface a phone landline with my computer's sound card in both directions [closed]
My approaches so far:
This thread seems to go nowhere. It was trying to build the circuitry myself, but people have problems recommending suitable circuits. We keep on fiddling about with ...
2
votes
2answers
193 views
Detect a touch to the threads
I have a lot of threads stretched vertically. I want to detect the touch them. So that you can then play them like a guitar for example). What is the easiest way to do it (detect touch, not to make a ...
2
votes
2answers
315 views
Humming and Transmission issues
First of all, I am going through designing all of this because I did not find a ready made circuitry for my purpose which is mentioned later. If you know a circuitry that is well tested and does what ...
1
vote
0answers
95 views
Using a Keyboard in a 556 Stepped Tone Generator
I'm in the process of making a simple stepped tone generator using the 556 timer, but I want to be able to have different resistors to change the pitch of the tone I get out. I think it would be ...
-2
votes
1answer
300 views
Connecting a telephone to the computer's soundcard to playback music samples while talking [duplicate]
Possible Duplicate:
How to boost audio volume coming from a telephone
Foreword: If you don't know the answer, don't leave. Write your idea where I could find an answer to this as a comment.
...
1
vote
1answer
467 views
Resonant frequency of piezo elements, and generating multiple tones
In another question I posed, there were couple of "piezo sounder" parts suggested for the purpose of a compact but reasonably loud, alternative to electro-mechanical hooters.
Was trying to understand ...
5
votes
3answers
2k views
Why do my speakers make a noise when my cell phone gets a call?
It's a very common sound but I've never thought to question why it happens.
-1
votes
1answer
116 views
Common sources of acoustic noise in circuits driven by a DC power supply [duplicate]
Possible Duplicate:
What electronic component of a computer produces (sound) noise?
What are some common sources of acoustic noise in circuits driven by a DC power supply?
One potential ...
6
votes
3answers
551 views
What electronic component of a computer produces (sound) noise?
Certain mechanical components of a computer produce noise, such as speakers, fans, harddrives and disk readers.
Can electronic components of a computer (transistors, resistors, capacitors, ICs, ...
0
votes
0answers
77 views
Play multichannel sound from PC - LG music center (LM-KW6530X) [closed]
This music center has only 2-ch AUX. Sound from PC plays only on two speakers.
There is a way to play sound from PC on 5 speakers?
Maybe I can enable converting from 2ch to 5ch? When play audio CD ...
6
votes
3answers
847 views
What is the simplest sound generating circuit?
I'm relatively new to electronics, and have no formal training other that what I picked up through my electrical engineer father. I solder well, can read schematics, have assembled kit projects with a ...
-3
votes
2answers
646 views
6 channel Logitech Z-680 surround sound system 1 speaker blown and need help replacing fuse inside sub-woofer [closed]
I've Logitech Z-680 surround sound system for my intel core2 duo computer.
The problem I'm having is I can't get the sound to work on my front right speaker. All other speakers work just fine. So at ...
0
votes
3answers
1k views
How can I attach external speakers to a tv that has no output jacks? [closed]
I recently bought a Samsung 40" lcd, led television.
The sound quality is bad when the volume is turned up.
All the jacks are input.
I'm pretty sure that I can open it up and identify the speaker ...
1
vote
3answers
302 views
Trying to get that tube sound from a gainclone amp
A Gainclone amplifier makes for a nice simple benchmark/monitor amp. It is a class AB linear amplifier capable of 20 W - 120 W of power, and is based on a monolithic amplifier chip such as the LM1875, ...
3
votes
2answers
691 views
Low power way to make a sound
I'm designing a 3V button cell battery powered device. I want it to beep or click or just make any noise at some times just loud enought to be heard across the room.
I've made a prototype working on ...
1
vote
2answers
451 views
Small, low power buzzer
I am looking for a small, low power buzzer for my circuit. The components I found in the market do not fit my requirements. The piezo buzzers are too big (min diameter 9mm) while the electromagnetic ...
0
votes
1answer
192 views
PICAXE very short interval timer (for playing sound)
I have a PICAXE (08M2) that I'm using to play sound, using the Roman Black algorithm mentioned in the answer to this question. My question, then, is this: How do I get the PICAXE to wait for the ...
3
votes
2answers
143 views
A question on difference between an computationally created sinusoid signal and the recorded signal (when played out through a speaker)?
I have created the following signal(in Matlab), a 5000 Hz sinusoid multiplied with a bump (just to limit it in time) so that it forms a short beep. Now if i observe the spectrum of this ...
3
votes
2answers
2k views
Can you play Chords on Arduino with a single piezo speaker?
I need to be able to play two tones at once and i have the arduino uni with a small 8ohm piezo speaker. Is it possible to do so?
Sample Code
...
2
votes
4answers
226 views
Sounds or music into a DC fan?
Perhaps my understanding of how magnets work is off, but would it possible to play some waveforms into the positive and negative leads of a DC fan (think motherboard fan) and get a coherent sound? I ...
-6
votes
1answer
118 views
How to electromagnetically amplify voice? [closed]
How can I electromagnetically amplify the sound vibrations from my vocal cords to directly affect my body?
1
vote
2answers
78 views
Mimic Blinker Ticking Sound
I am looking for a low power way to mimic the ticking sound of a cars blinker. I had an LED flasher that made a ticking sound, but now with the setup I am using the flasher no longer will work with ...
2
votes
1answer
190 views
How to filter out Harmonics?
I just learned about the awesome world of synthesizing with an Arduino and a resistor ladder. It makes a nice tone but it has lots of harmonics too! How can these harmonics be reduced? I know a little ...
2
votes
3answers
887 views
Can I use a potentiometer to reduce sound level in a speaker?
I want to reduce the level of sound in a speaker (i think 6Ω 30w rms). I wonder if it is that simple to put a potentiometer in one of the cables.
If this can do the trick, how do I calculate the ...
4
votes
1answer
274 views
What is the physical meaning of resistance and power ratings of a loudspeaker?
What exactly does it mean when it is specified that internal impedance (or resistance?) of a loudspeaker is 16 \$\Omega\$? Is that ohmic resistance of the copper of its internal winding? Or is it ...
1
vote
2answers
269 views
mute de-amplify sound volume
I want to de-amplify the sound volume of my television.
My native language is not english, and I do not know the correct word, if any, for the opposite of amplify.
When my TV is turned from volume ...
