Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with Search options user 105038

Questions about designing electronics for measuring, processing, and amplifying audio signals.

0
votes
It is not clear what the basic requirement/need are here? Are you seeking solutions for feedback-reduction? Are you asking for artistic effects like simple delay (or complex delay/reverb/echo)? Are …
answered Aug 29 '16 by Richard Crowley
1
vote
That seems a bit dubious as a broad, general axiom. Remember also that no ribbon microphone actually has a 300 ohm output impedance. The ribbon itself may very well have an impedance of < 1 ohm. All r …
answered Apr 6 '16 by Richard Crowley
2
votes
No. There are no "air core audio transformers" because it is not possible to make a practical air core transformer that will operate at such very low frequencies as audio (20KHz and below). Since … you offer no details, it is difficult to understand why... Impedance matching has become a very annoying problem for me in my project of designing an audio amplifier. It makes us think that you don't understand the problem and you are attempting to use the wrong solution. …
answered Jun 7 '16 by Richard Crowley
0
votes
controllable-gain amplifier) or whatever. Or you multiply the audio data value if you are processing audio in the digital domain. Since we don't know what the rest of your project looks like, we can't really give you any kind of useful answer. …
answered Nov 14 '16 by Richard Crowley
1
vote
Besides capacitors drying up, a major cause of this kind of problem is dirty contacts: Switches, pots, connectors. A good cleaning is in order regardless of the symptoms.
answered Nov 1 '16 by Richard Crowley
1
vote
Find the existing wiring to the walkie-talkie internal microphone and wire it through your added 3.5mm connector. Most of those 3.5mm connectors have "closed circuit" switches which will connect the r …
answered Jun 3 '16 by Richard Crowley
0
votes
A transformer is typically used for isolation and/or impedance matching. Magnetic coupling between the primary (input) and secondary (output) provides the function of electrical ISOLATION. A transf …
answered Jun 7 '16 by Richard Crowley
2
votes
Does your circuit pass sound with the 1uF capacitor removed? If not, then you have some fundamental problem with your "output buffer" circuit. Using a shunt transistor (your BC549) to control audio
answered Nov 13 '16 by Richard Crowley
1
vote
By definition, your analog-to-digital input (or anybody's input) clips at 0dBFS (the decibel ratio relative to Full Scale). Likely the most accurate way to meter an input like this is with a software …
answered Apr 19 '16 by Richard Crowley
1
vote
There is essentially zero chance of that happening. It is unlikely that sending a line-level audio signal INTO the green output connector will actually "damage" anything. And it is equally unlikely … that powered speakers can actually send any audio OUT of the input port. You could clean the volume control by the usual methods (special aerosol spray for cleaning pots and switches). Or you could replace those old plastic things with some modern speakers that will blow those away. …
answered Dec 15 '16 by Richard Crowley
1
vote
You did not actually ASK a question there. But if we assume that you are asking IF you can use those recycled Creative Inspire 6700 speakers with a TPA3110-based amplifier, then the answer is very lik …
answered Oct 3 '16 by Richard Crowley
2
votes
As others have mentioned, that is not a very good circuit. Alas, we can't expect that just because we found it on the internet it will be a decent design. I wold use a circuit more like this one. …
answered Dec 16 '16 by Richard Crowley
1
vote
The playback speed issue is most likely a software problem. Or maybe a circuit design problem where you are hot clocking audio data into the D/A converter at the proper rate. The other problem you … describe is most likely the result of "aliasing" which is a common side-effect of analog to digital and digital to analog conversion. The analog audio must be properly bandwidth filtered to eliminate false alias signals. …
answered Aug 2 '16 by Richard Crowley
1
vote
There are dozens of options for Class-D power amplifiers on Ebay, etc. Lots of 50W + 50W sterep power amps. And if you are driving a 16 ohm load, you should probably use a "stereo" amplifier in "Brid …
answered Oct 23 '16 by Richard Crowley
0
votes
Yes, it is rather hard to solder to those cables. They are designed for ease of manufacture (using expensive tooling) and flexibility for the user. But those properties make them rather difficult for …
answered Dec 18 '16 by Richard Crowley

15 30 50 per page