Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [audio]

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

Questions about designing electronics for measuring, processing, and amplifying audio signals. Also about designing for audio devices, as well as issues and filtering in audio circuits.

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3227 questions
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How important is impedance matching in audio applications?

How much will reflected signals matter in audio applications (say between an amp and a speaker, or a pre-amp and an amp)? Mostly with regards to fidelity and not power transfer. What are the different options of matching the impedance and their…
eruditass
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How do media buttons on a plain wired headset work?

I mean the simple analog headset pluggable into the jack of a phone. Not USB, not bluetooth, not fancy proprietary plugs with extra connectors - just a generic stereo+mic jack. The four "bands" on the jack plug are GND, right earphone, left…
SF.
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What makes a "balanced" audio signal?

What is "balanced" audio exactly, and why is it useful? I've read that it means there are two voltages, with one being the inverse of the other. A balanced audio receiver looks at the difference between these, and calls that the "signal". Noise…
Phil Frost
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What set the speed in a cassette tape recorder?

I was wondering what set the rotational speed in a cassette recorder? I assume that the speed must be constant, but that means that the tape data would have different effective densities depending on where you were on the tape. Was it a stepper…
b degnan
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Why are high end audio connections gold?

Silver has a lower resistivity than gold and is cheaper, so why are high end audio components gold plated?
Sponge Bob
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Naively mixing two (or perhaps more) audio signals

this is my first question and I am very much a beginner in electronics so I apologize if this is a too stupid question. I have Atari punk console and another small homemade audiomaking circuit. These two have mono audio signals as outputs and I…
Jonas
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9
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Why do speakers use clamp connectors?

Why do many audio speakers use clamp terminals to connect speakers one to another, rather than jack connectors?
user626528
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AC'97 front panel dongle to IntelHD

First of all, I would like to say that I'm a noob at electronics, so please be merciful :) I'm trying to convert AC'97 audio front panel dongle on my PC to IntelHD one. The difference is that IntelHD is able to detect the fact someone plugged in…
torvin
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Patching stereo audio into an old car's tape deck

I drive an older car before the days of 3.5mm line-in jacks. A couple years ago, I found an interesting idea online where some owners of the same car patched in a line-in directly into the L/R channels of the cassette player deck (since no one…
acee
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What is the typical max voltage for sound card line in?

What is the typical max voltage rms, peak and peak to peak for a sound card line in?
oneoldude
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install AUX input on car audio/navi system

I want to install an AUX connection on my car navigation system. I have never done such thing before, though. I searched a bit around and a very similar installation to what I need is here on Saabworld.net. However, I don't have that cassette player…
Albert
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Achieving bit-perfect rendering of audio CDs

I am aiming to get bit-perfect rendering of audio CDs and wondering about the necessary configuration. Currently I have: A high-end CD transport without a word clock A high-end RME sound card with a word clock module A very high-end DAC with a word…
Tyler Durden
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Audio to Low-Pass Filter to Comparator to LED = Fading LED based on the Frequency?

If I were to pass an audio signal through a Low-Pass filter with a cutoff frequency of 200 Hz (bass), and then send that signal to a comparator, then use this signal to drive an LED, would the LED be able to change its brightness based on the…
cats
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Chip/board to drive low latency audio sample playback and mixing?

Generally, I wish to build an embedded system that is capable of playing back multiple high quality audio samples simultaneously, with a very low latency (eg. from trigger to audio). There may be over 4000 individual samples using 2GB of storage…
Horselover Fat
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Stereo line level to mono microphone level

I need to find a simple (preferably passive) way to take a stereo consumer line-level output, mix it to mono, and reduce it by 40dB to be used in a microphone level. Following this answer: https://electronics.stackexchange.com/a/14982/1554 I see…
Brad
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