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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

audio signal

  1. C

    How are stereo audio signals sent over TRS connectors?

    On a TRS connector, there are 3 connections: Left, Right, and Ground. I wonder how these connections function when sending audio signals. Here are my questions: 1. Do the left/right connectors send both the positive and negative portions of the waveform, or is some form of DC offset applied...
  2. Z

    Difference between mixing and adding a frequencies [audio]

    I'm a composer, curious about everything under the hood. In terms of math and physics - I'm newbie. Recently, I stepped into the field of frequencies. There is a term "Mixer", that is dedicated to "mix" frequencies/audio signals together. Following this thread I have a question: Why do we need...
  3. T

    does anyone else think this could be a million dollar idea?

    I have some bluetooth earbuds and I want to make it usable with an aux cord like bluetooth headphones. I could just directly connect a 3.5mm port but then the current would also travel into all of the other parts. Would that be a problem? If so couldn't I just use diodes to prevent this?
  4. R

    wireless audio transmitters & receivers

    Hi, I'm wondering how many individual wireless transmitters/receivers (stereo or mono is fine) in theory can operate in short range (3 ft. max) next to each other without interfering dramatically (via RF freq. UHF, or any other freq. or means that would be wireless). Prefer a solution with...

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