Sound spectrum analyzer

From Eric

(Difference between revisions)
Jump to: navigation, search
m (Created page with "none none none [[File:sound_spe...")
m
 
(One intermediate revision not shown)
Line 1: Line 1:
-
[[File:sound_spec_anal_live.jpg|400px|thumb|none]]
+
The audio spectrum analyzer is composed of three main components :
-
[[File:sound_spec_anal_pcbs.jpg|400px|thumb|none]]
+
* an electret microphone ands its pre-amplifier
-
[[File:sound_spec_anal_breadboard.jpg|400px|thumb|none]]
+
* a BA3830S spectrum analyzer chip
 +
* a set of LM3914 led drivers.
 +
 
 +
Here are the schematics:  
[[File:sound_spec_anal_schematics_1.jpg|400px|thumb|none]]  
[[File:sound_spec_anal_schematics_1.jpg|400px|thumb|none]]  
[[File:sound_spec_anal_schematics_2.jpg|400px|thumb|none]]
[[File:sound_spec_anal_schematics_2.jpg|400px|thumb|none]]
 +
 +
The initial setup on a breadboard:
 +
[[File:sound_spec_anal_breadboard.jpg|400px|thumb|none]]
 +
 +
And some pictures of the final result using PCBs:
 +
[[File:sound_spec_anal_live.jpg|400px|thumb|none]]
 +
[[File:sound_spec_anal_pcbs.jpg|400px|thumb|none]]

Latest revision as of 09:02, 21 February 2021

The audio spectrum analyzer is composed of three main components :

  • an electret microphone ands its pre-amplifier
  • a BA3830S spectrum analyzer chip
  • a set of LM3914 led drivers.

Here are the schematics:

Sound spec anal schematics 1.jpg
Sound spec anal schematics 2.jpg

The initial setup on a breadboard:

Sound spec anal breadboard.jpg

And some pictures of the final result using PCBs:

Sound spec anal live.jpg
Sound spec anal pcbs.jpg
Personal tools