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bitjacker wrote:Music theory kills creativity.
Well to a certain degree I can relate to this.
There's a noticeable dip in quality when one first starts to learn the intricate details of whatever it is one is doing. First when you're starting out you have that "stupid" confidence that only people who don't know what they are doing have, then a bit later you start to understand what the things were that you were fooling around with and this is where the low-point is. It makes the work one puts out worse, it affects motivation to do it and yes it does impact on creativity too. Because suddenly you're slammed in the face with thousands of rules that you didn't have before. You automatically hamper yourself to protect yourself from "failure" (which too is a valuable thing to do. Failing that is, if you're not failing, you're not learning).
But after that it gets better. And keeps going as long as one cares to. 
The only thing I see it as (and am talking to you as a person with NO knowledge of music theory at all, I go by ear mostly) is that music theory helps in understanding the 'why' of things. You don't necessarily *need* it if you're not completely tone-deaf. But it helps. And I imagine that at some point or another it becomes a very valuable tool.
I have a meager Tumblr page for my musical shenanigans. :I
http://myexplosionchip.tumblr.com/
*Edit: Might as well put a link. :S
jackary wrote:Look up on youtube "Altoid Tin Headphone Amp" - try implementing that. That way you can have a potentiometer on the box which lets you control the volume. Will need a 9V battery or other power supply though.
OK. I'll look it up. The reason why I ditched the potentiometers is that I can't fit them inside that case sooooo... the potentiometers go on the next design. :3
@Alley Beach: that looks quite good, I'll look that over.
Thanks for the pointers, guys.
I call it "Moxx". For whatever reason.
But uh, I tested it out with headphone jacks instead, and much to my expectation the sound was quieter than the prosound jack produces. I don't really know what to think of this. It seems to work kind of like it should? *shrug*
But to tell you the complete truth I may have overlooked that prosound detail regarding plugging headphones into it... ^^;
Alley Beach wrote:when you mix them, are you feeding them into an amp? prosounds dont like to go straight to headphones 
Shit... <.< Gonna have try with the headphone jacks then.
Bamboori wrote:hum... actually i wanted to use 10k pots because i wasnt able to hear any sound when testing with my phone (even though its VERY loud), but later i want to use it for prosounded gameboys and the like. should i rather use higher resistances then?
Well. Higher resistance makes the sound weaker. So I think the general consensus regarding my attempt earlier is that you need to find a resistance value that works fine for what you expect to use it for? *shrug*
* Also my two Game Boys are prosounded and 2k ohm resistance still made the sound very, very weak.
That looks sweet as hell, dude! 
yogi wrote:As Chunter pointed out above, use a pot in place of the R. In a test circuit, adjust it to your liking, Then remove and measure the value with a multimeter. You can then replace with a fixed resister.
Valid point. I'm probably going to have to invest in a multimeter for future projects- I've just started with building custom stuff. ^^
But yes- I'm finished with my little mixer project. Finally settled on 560ohm resistors, I have two for each channel. There's no real audible phase cancellation like in my last attempt where I accidentally soldered the input from both channels to a shared junction where the resistor was situated. That build was catastrophic, super faint sound, even weaker when two devices went off simultaneously.
But my new build is about as good as I care to get it right now. I ended up omitting the potentiometers in the end. I don't have enough room for them in the case I have. It's a small black plastic box about the size of a Game Boy cartridge case and actually has the top fashioned from such a case since I didn't have any other plastic at hand. It's all wrapped up in tape so it's a sight for sore eyes. But it works.
yogi wrote:Guys, If you only have say 1K resistors on hand you can put two in parallel for a total of 500ohms. I.E. putting 3 in parallel would give 333ohms . The Equ for parallel:
Rtotal=1/((1/R)+(1/R)+(1/R).......)
Use this for any number and value of Rs in parallel. They don't have to be all the same when solving for Rtotal.
That's right. But in my case I'm kind of space restricted so to parallel 2 or more resistors takes up a lot of space. So I think my best bet for this mixer project is to land a good resistance with only one resistor.
That's also what I've been thinking about since yesterday. I'm guessing there's no other way to know when my resistance value is good than to just test various right?
Bamboori wrote:i think that wont make a difference, since the pot is used as a variable resistor, so both add up no matter which order they are in (as long as they are in a row).
Cool. Yeah. I completely misunderstood what you meant. I mixed up my terms. 
But thanks! I'll get to work on this in the morning, see if I can't get this contraption to fit inside a plastic case of sorts...
I'll also see to it if I can't get some resistors with less resistance tomorrow. e_o
Bamboori wrote:well afaik there should be at least some resistance to protect the inputs.
Allrighty.
So should it be input -> resistor -> pot -> output?
In the schematic I have it the other way around, the resistor kicks in before going through the output jack.
OK.
Thanks for the response guys.
As I see it: If this thing in fact works with no audible distortion (I didn't get a lot of time to test it out, I will continue fiddling with it in the morning) then any and all problems should start arising when I plug in different devices to the inputs right, or to the output?
chunter wrote:Any resistor can be replaced with a trim pot if you want to experiment. Combining the two raw inputs can lead to phase cancellations and distortions, which may or may not be a desirable thing for you...
Well. ATM I have limited amount of things to play around with. The resistors I have on hand are 4.7kohm resistors. I guess that's kind of a lot am I right?
I used those because of this tutorial.
But I can't really be sure of how the creator has planned that to be used.
But on the build with the resistors I had one per channel per jack, which means I end up with two wires going to the left and right channel respectively and both those have resistors on them, I guess I could condense it down to having one resistor per output channel?
Here's the cheeky schematic I used. Look it over but please be gentle, I haven't done this in the past. *blush* xD
But I reckon maybe it's overkill to have 4 resistors like that? Should I test with only one resistor per channel then? :S
Sooooooooo. I'm just back from havin' taken a whack at building my own two channel mixer.
It's got potentiometers and real nice stuff like that and it's a derivative off of the schematic visible just a few posts up but it has stereo jacks and stereo pots instead.
But I've run into one thing that confuses me. To test this setup out I plugged my headphones in and my two gameboys. It worked, surprisingly but the sound was very, very faint.
I know it has to do with the resistors I used so I did another test where I just routed them directly to the output jack and that got a lot louder. I guess my question is, is there a negative aspect to not having resistance? Please enlighten me.
Teh D3th St4r wrote:Frog Tape.
It really does work as well as the commercial says.
For detailed elements; lay strips of the tape on wax paper, draw your design, and carefully cut it out with an xacto knife. Then simply peel, stick, and spray!
You can get some spectacular results if you're patient.
That sounds good. My painting days are not over. I'm going to spraypaint a design on an electronic gadget I'm building this week (I think) and I will take your advice on this! Thanks!
kitsch wrote:reminds me of minecraft creeper
The exact thing I first thought when I peeled the masking tape off after I'd sprayed the lime green. xD
Posts found: 257-272 of 327
ChipMusic.org / Forums / Posts by my.Explosion