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Thread: Car audio quality in carputers

  1. #11
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    "
    OK - common misconception. That 'LOUD' button does NOT improve sound quality, I'd venture to state that it distorts more than anything. You are correct in saying that they do all make a difference. However, I wouldn't say that it's a GOOD difference, rather a BAD one...lol
    "

    Ok, thanks for the info.

    Ok two more specific questions, are there particular software side enhancements that are designed to enhance sound quailty (of say mp3s) in the car environment/in a carputer? Or are they planned in the future or something....

    Has anyone built/used simple analog head-unit like controls to perform simple actions? Has anyone done custom ones for carputers?
    Ideally I'd like a touchscreen and below that a control knob for volume and maybe arrow buttons (left/right/up/down and some key that is the equivalent of enter), and maybe even bass and treble control knobs or something.
    Its just curiosity and I'm not referring to a full keyboard.

  2. #12
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    one question for you...why are you so bent on improving the SQ of an MP3? if they are ripped at 128 they are going to sound like 128, ripped at 320, will sound like 320. There really isn't MUCH that can be done in this aspect. This is where you need to have a stereo system that is built to adequately reproduce your music. You can have something recoreded in the best possible format, but if you system can't reporduce that, then there's no point in the other.

    Again, you are aking aboutthe knobs, and I'm answering (again) with the alpine unit like what I am running in my car.

    You say you want good sound quality, yet you don't ever go much further than treble and bass. there is SOOOOOOOOOOOOOOO much more to sound that trebble and bass. Those two paramaters (if you will) are just the outter edges of what can be tweaked and controlled with sound. For instance, the alpine unit I speak of has a total of something like 171 bands of equalization....that's way above and bayong your simple treble and bass settings

    settings so simple will never do much to improve SQ IMO

    EDIT: more of a PS if you will....

    I'm not running any sort of correction on the software side of things in my car and I'm still winning sound quality shows. Granted, I'm not running MP3s at these shows, rather a CD as that's what the rules state, but you still get my point. software is NOTHING without a good stereo to back it up in this instance.
    Jan Bennett
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  3. #13
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    The Griffin Powermate is a popular solution for controlling sound with a tactile control. It can adjust volume but also control the app as well.
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  4. #14
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    Quote Originally Posted by Red GTi VR6
    one question for you...why are you so bent on improving the SQ of an MP3? if they are ripped at 128 they are going to sound like 128, ripped at 320, will sound like 320. There really isn't MUCH that can be done in this aspect. This is where you need to have a stereo system that is built to adequately reproduce your music. You can have something recoreded in the best possible format, but if you system can't reporduce that, then there's no point in the other.
    It was all curiosity, I'm not bent on improving sound quality. I was just curious, when headunits boast so many forms of enhancements to the sound quality (its probably just marketing though) do people build in similar features to carputer software?
    It was just curiosity!

    Quote Originally Posted by Red GTi VR6
    I'm not running any sort of correction on the software side of things in my car and I'm still winning sound quality shows. Granted, I'm not running MP3s at these shows, rather a CD as that's what the rules state, but you still get my point. software is NOTHING without a good stereo to back it up in this instance.
    Great. Also in regard to your headunit, I think thats a great way to control things. I'm just unsure whether I will have the room for a full-head unit and a touchscreen...

    Anyway, I was just curious whether anyone did some creative stuff and combined them with carputer controls, although it would appear that using the head unit controls would probably be the easiest way.

    P.S. how did you do your setup? Is that in a thread of its own? I'm just learning here, thats it!!!!

  5. #15
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    it's NOT a head unit. It's a disply for a processor.

    it's about an inch thick.

    check the web sites in my signiture....around here most people either have web sites for their builds which they place in their signitures or they have links to their build threads in their signitures.

    don't go getting all bent out of shape over nothing...I understand it was just curosity. That's why I'm asking YOU the questions as well, so that I can better understand where YOU are coming from to get you better answers
    Jan Bennett
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    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  6. #16
    Constant Bitrate stapan's Avatar
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    some cs student,

    this is an area that is still in its infancy. you will find that most (if not all) of the people here who are serious about sound quality are using optical output from the computer to a processor such as the alpine. I have lots of respect for what some people have achieved this and their setups (like RedGTIVR6's) and it is a great setup from a SQ point of view, but if you think about it, a carputer in those setups is just a glorified $50 CD-ROM drive. they could just swap in any head unit with optical out (or even a iRiver SlimX portable CD player with car kit) and have an identical setup from a sound point of view.

    I think this is one of the areas in which a carputer has huge untapped potential. I am hoping to take this to the next level, currently building an all out project using a pro studio sound card which has some hardware level effects like the ones you were talking about, along with some time delays etc. its not anywhere near as versatile as an alpine processor, and I am going to look into software processing as well. I have put about 200 hours into my project so far and the carputer should be in in a few weeks, will let ya know if I find any good software processor.

  7. #17
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    I'm going with the same way of stapan,why not use the endless power of our great carpc?I have a professional audio card that let apply every kind of elaboration on the sound stream before output it to the speaker,i can use steinberg vst plugin to do EVERYTHING: per channel equalizer,software crossover,bass enhancement and all you can think of.
    The interface kind of suck as is not touchscreen friendly at all(for that i will miss the HU),but who care i will not change the settings every seconds.

  8. #18
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    If this is as good as it,s made out to be, who knows what is possible using a Carpc
    " http://www.soundblaster.com/products/x-fi/technology/ "
    personally i cant wait.
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  9. #19
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    .

    Unfortunitly, "improving the sound quality" from compressed audio goes with the saying "you get what you paid for" Like another member here stated, I agree that 128 is going to sound like 128, 320 like 320 and so forth.

    I realize that editing the EQ, in WIN amp or your headunit by increasing certian frequencies may sound a little better depending on the sound system its comming out of but I wouldn't say it make's the audio any better. It its actually distorting the audio to your preferance, I guess you could say.

    I think what you might have been looking for might be anwsered by the following response:

    Your head unit or home audio system may have enhancement features that do things to the audio. For example, "Hall or Staduim" delays the rear channel's to give a hall or staduim effect to the audio.

    Depending on your soundcard drivers, you will be able to have these same features. An example of this can be found if your using VIA epia M series onboard audio. The driver enabled you to change delays between the front and rears and also some other interesting effects.

    No front end that I know of utilizes this feature, but you can indeed change the settings on the fly through windows...
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  10. #20
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    Quote Originally Posted by stapan
    s but if you think about it, a carputer in those setups is just a glorified $50 CD-ROM drive. they could just swap in any head unit with optical out (or even a iRiver SlimX portable CD player with car kit) and have an identical setup from a sound point of view.
    exactly correct. Until there is a sound card that
    A) fits the constraints of my system AND has opticl out, I had to resort to the set-up I have in the car now.

    B) produces MORE than a 2v signal (4 would be nice) out

    I view this set-up as the only way to achieve award winning sound quality out of a computer.

    I would LOVE to go with a 100% computer set-up, but since sound quality is very important to me (not just the competitions, the actualy musical reproduction as well) I'm not willing to sacrifice that just to have a 100% computer in my car, as is the case with a lot of other individuals on here.

    I think this is one of the areas in which a carputer has huge untapped potential. I am hoping to take this to the next level, currently building an all out project using a pro studio sound card which has some hardware level effects like the ones you were talking about, along with some time delays etc. its not anywhere near as versatile as an alpine processor, and I am going to look into software processing as well. I have put about 200 hours into my project so far and the carputer should be in in a few weeks, will let ya know if I find any good software processor.
    this would be VERY nice. I looked into going the professional sound card route previusly but one simply wouldn't fit my constraints that I had to work with. Now when we get that Magnum SRT-8.....it's a whole different ball game....lol

    I'd really be interested in learning more about this project of yours. Do you have any documentation of it up online anywhere or is it just too soon to worry about any of that right now?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

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