Audio Signal Switcher

Submitted by kfJvJ on Tue, 06/16/2020 - 14:33

Hey, I'm new here (and new to electronics in general).

I'm trying to use a 555 timer to build a circuit that redirects an audio signal into 1 or 2 paths.  (For now, let's say left/right speaker.)

I've already been able to build a circuit that alternates between 2 LED's.  Think of this circuit, but when one LED blinks, the audio signal goes left, and when the other blinks, the audio signal goes right.

My main thing is, I don't know how to incorporate the signal into this kind of circuit.

Any help would be appreciated.  Thanks.

555-timer-dual-led-flasher.gif

Correction: I meant to say "1 of 2 paths", not "1 or 2 paths".

  Joined June 16, 2020      2
Tuesday at 02:26 PM

Use NPN and PNP transistor in the place of LEDs. It will work.

  Joined February 12, 2018      696
Monday at 02:11 PM

How exactly should the transistors be configured?

  Joined June 16, 2020      2
Tuesday at 02:26 PM

jaksonlee

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Audio signal flow is the path an audio signal takes from source to output.The concept of audio signal flow is closely related to the concept of audio gain staging; each component in the signal flow can be thought of as a gain stage.

In typical home stereo systems, the signal flow is usually short and simple, with only a few components. However, in recording studios and performance venues, the signal flow can often be quite complicated, with a large number of components, each of which may cause the signal to fail to reach its desired output. Knowing each component in the signal flow becomes increasingly difficult and important as system size and complexity increases.

  Joined November 07, 2019      124
Thursday at 04:25 PM

What about using two photocells? Glue each photocell to each LED. Use black heat shrink to separately cover them from light. Wire the circuit so that the left audio signal must go through one photo cell and the right audio signal must travel through the other photo cell.

  Joined October 22, 2021      7
Friday at 08:53 PM

It will add noises maybe!!

  Joined February 12, 2018      696
Monday at 02:11 PM

I have built and have been using something very similar for abaout a year on my internet radio program and believe me-there is no noise. I originally used two relays and I could hear the clicking sounds. Besides I find that the control of an audio siganal is almost imperceptible as the two photocells are working.

  Joined October 22, 2021      7
Friday at 08:53 PM

Then it is a good solution to try. How you conencted? DO you have schematic?

  Joined February 12, 2018      696
Monday at 02:11 PM