Thread: Software options for Tuning

Originally Posted by Abmolech

Lack of demand is the main reason.
I have no desire to start a bun fight, however, car audio enthusiasts are quite well educated when it comes to some things, and woefully ignorant in others.

Possibly the best example is the extreme lengths people go to designing and making sub boxes, and the antipathy to front enclosure design.

I agree. But just like home audio, car audio has it's fair share of ignorant folks. Take into account how many home folks go and buy the $200 theater in a box compared to the folks that are really interested in doing this type of tuning. Subs in a car are a lot easier to work with than the front stage. More people want bass in a car than clarity, and I'd say the same goes for home audio as well. Just look at all the frat boys that go goo goo gaa gaa over big towers for the house, or the number of people who go nuts when you pop the trunk and you've got a single 15, now imagine it for 4 15s...

it's what people can see, not what's behind the scenes...same for home, same for car. It's unfortunate, but it's not just for the car.

I posit that home audio could be considered more of a waste than car audio...after all, I spend 3x more time in the car than I do at home in a state than I could actually appreciate a well set-up home audio system.

Ok - now onto the point of this thread...hehe (and no, I wasn't arguing with you, I was more or less just making a few statements... )

First requirement for software is it should be designed for near field listening.

I agree and I'm hoping to get a bit more info this weekend on this...since I'm here at USACi world finals right now.

As mentioned pink noise sucks... There are some better impulse style software "floating" around. I will certainly be availing myself of this, probably with suitable mods.

I'd be really interested in what you come up with regarding this.

Next up is the use of crossovers.
It is almost entirely possible to replace enclosure design around driver Fs with a proper crossover. (no this does not negate baffle use) This is particularly useful in a car.

Agreed!!

Most crossovers cause phase shift, again this can be compensated for with appropriate software. All this adds to the delay signal which can be allowed for with proper timing. (read software)

We've run into this in our car with the 701....it's another area where I was hoping to overcome problems, glad someone else sees this as an issue in car too!

agreed, most build there systems backwards, the bass is the primary concern & the front stage is secondary...., to me the front stage is everything & the bass is just a supliment or support....

& yeah, x-overs do change phazing, but is it as much with a digital solution like an alpine? I was always under the assumption that this was much less of an issue in the digital domain?

& yeah, x-overs do change phazing, but is it as much with a digital solution like an alpine? I was always under the assumption that this was much less of an issue in the digital domain?

This is a commmon misconception. There are two basic types of digital filters.
There is IIR (infinite impulse response) and FIR (finite impulse response). IIR filters are usually analog modeled filters in the digital domain. They suffer from the same problems as analog filters with phasing issues.

FIR filters on the other hand do not have phase problems. They have zero phase shift-or it has linear phase. This is more ideal. It eliminates one factor out of the equation, unless you want the phase changes an analog or IIR filter produces.

I assume the Alpine is using a IIR filter because they are much easier to design and require less processing power. I do not know for sure though. A butterworth or LW4 crossover is an IIR filter type.

I was actually working on a post about the differences between the filters but got sidetracked.

back to work on that post!

I want to know more about em....

*whip

Ok I put it in its own home in a seperate thread. There is a TON of info and its all super tech language. I don't want to regurgitate wikipedia so I am still trying to reword things so its easier to read for non techies.

Here it is...or at least what I have so far.

http://www.mp3car.com/vbulletin/show...d=1#post964845

Originally Posted by FyreDaug

Im still curious why the DSP plug in only works on lossless files and the winamp bass/treble NOT on lossless but everything else

What version of winamp are you using?
What winamp output plugin are you using?
Which VST EQ plugin are you using?