I'm 8 years late but hey...
I have one in the making. Still waiting for the parts to arrive. This one is 100% analog. No microcontrollers or programming needed like the ones I've seen on the net.
Build your own RTA!
I have one in the making. Still waiting for the parts to arrive. This one is 100% analog. No microcontrollers or programming needed like the ones I've seen on the net.
Build your own RTA!
it's alive!! 
An externally hosted image should be here but it was not working when we last tested it.
Very nice Quan. Would be nice if you could make these of others
I would be in for one even if it was just a kit. Whats the $$ look like for just parts?
parts alone (incl PCB's) is in the $330 range. I had some of the parts in stock though so I spent less. I'll be posting more pics once the chassis is completed.
I don't think I want to go through a project like this again. once is enough
RTA is finished. I just have to add window tint to the display for contrast.
I just have to add window tint to the display for contrast.An externally hosted image should be here but it was not working when we last tested it.
Here's the finished product after adding the window tint to the display...
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Very nice.
Rane makes a lot of processing gear, and an example was the RA27
Here is the schematic
http://www.rane.com/pdf/old/ra27sch.pdf
Not as fancy as the project above, but this and all their others can be found in the Rane web site
Rane makes a lot of processing gear, and an example was the RA27
Here is the schematic
http://www.rane.com/pdf/old/ra27sch.pdf
Not as fancy as the project above, but this and all their others can be found in the Rane web site
I was originally planning to do it that way (but multiplexed 4x 8ch mux = 32 bands) back in college when I had more time than money but it never happened. Then, when I started work, I had the budget and decided it would be "quicker" to just "mass produce" the individual filter and LED drivers.
djQ: Would you share the schematic with us?
The filters in the Rane RA27 (in post #11) are not likely to come close to the IEC 225 or DIN 45 652 specs to meet the requirements of a filter for a 1/3 octave RTA. The Ivie IE-30 I used to own had 4 opamp sections each filter, propably in a biquad configuration.
Just for fun I decided to do up a pc board for the circuit in post 12 (1/3rd done) and will post Gerber files and partslist if there is an interest. E
The filters in the Rane RA27 (in post #11) are not likely to come close to the IEC 225 or DIN 45 652 specs to meet the requirements of a filter for a 1/3 octave RTA. The Ivie IE-30 I used to own had 4 opamp sections each filter, propably in a biquad configuration.
Just for fun I decided to do up a pc board for the circuit in post 12 (1/3rd done) and will post Gerber files and partslist if there is an interest. E
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