Page 21 of 46 FirstFirst ... 111213141516171819202122232425262728293031 ... LastLast
Results 201 to 210 of 458

Thread: Software options for Tuning

  1. #201
    Low Bitrate
    Join Date
    Sep 2005
    Posts
    72
    If only home stereo/theatre people would try to understand this rather than brush off car people. Then maybe it would be studied more.
    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.

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

    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.

    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.

    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)

    Volume control is up my list for software.

    Room correction for under 500 Hz should be a real possibility (invert frequency correction)

    The "holy grail" will be using software for near field listening. With the popularity of headphones, this is now becoming a reality. I am sure we can "piggy back" on DSP logarithms when they become available.

  2. #202
    Variable Bitrate FyreDaug's Avatar
    Join Date
    Jan 2005
    Location
    Saskatoon, SK
    Posts
    352
    Quote Originally Posted by durwood View Post
    Yes, Winamp locks up. Probably just bad MP3's. I don't really know though.

    I am not sure about your strange problem. Just remember though that a 31 band EQ makes small adjustments versus a 10 band. If you adjust a bunch of bands that are close together then you should see a more drastic change. If you notice a difference on the FLAC files though then you should notice a difference on your MP3's on any changes you make. What is your software/hardware setup exactly? I need more information and I will try to duplicate your problem.


    Well I tried this, I dropped 6 bands from the right, to 0 on the 31band. On any flac song the treble was missing, but on all mp3 songs they sounded just fine, until I turned the treble knob all the way to 0. And I have 2 of the same song on flac and mp3 that it was tested on.

    Athlon 2800 512ddr, auzentech x-plosion pci card, asrock k7s41gx mobo

    edit: by 0 I meant the lowest they could go, -10db I believe

  3. #203
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    Quote Originally Posted by Abmolech View Post
    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!
    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!

  4. #204
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
    Join Date
    Oct 2004
    Location
    NY
    Posts
    6,234
    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?

  5. #205
    Car Audio Moderator durwood's Avatar
    Join Date
    Sep 2006
    Location
    Chicagoland (St. Charles,IL)
    Posts
    2,028
    & 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.

  6. #206
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    back to work on that post!

    I want to know more about em....
    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!

  7. #207
    Car Audio Moderator durwood's Avatar
    Join Date
    Sep 2006
    Location
    Chicagoland (St. Charles,IL)
    Posts
    2,028
    *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

  8. #208
    Low Bitrate
    Join Date
    Sep 2005
    Posts
    72
    The search for a suitable loudness compensation DSP continues.

    http://www.measure.demon.co.uk/Acous.../loudness.html

    Worth a read, these are the latest research papers into music/loudness compensation rather than noise/loudness compensation.

    Probably you guys know of this one..

    http://www.softplatz.com/Soft/Audio-...-Plug-ins.html

    Problem is only windows media etc.

    Next up is wave 6, have to check if this can do it on the fly, expense is a particular aversion.

    http://www.steinberg.net/955+M52087573ab0.html

    Last, is window vista

    http://msdn2.microsoft.com/en-us/library/ms678766.aspx

    This has it built in as standard.

    Now to find out if my crossover programs are supported

  9. #209
    Variable Bitrate FyreDaug's Avatar
    Join Date
    Jan 2005
    Location
    Saskatoon, SK
    Posts
    352
    Im still curious why the DSP plug in only works on lossless files and the winamp bass/treble NOT on lossless but everything else

  10. #210
    Car Audio Moderator durwood's Avatar
    Join Date
    Sep 2006
    Location
    Chicagoland (St. Charles,IL)
    Posts
    2,028
    Quote Originally Posted by FyreDaug View Post
    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?

Similar Threads

  1. AutoTap used to develop custom software!
    By Dodger1417 in forum Engine Management, OBD-II, Engine Diagnostics, etc.
    Replies: 5
    Last Post: 09-25-2006, 11:51 AM
  2. comparison of GPS Software
    By gunsandrosses in forum Newbie
    Replies: 4
    Last Post: 06-28-2006, 10:56 PM
  3. CarPal Bluetooth Module & Digimoto Software....A Very Good Combo..
    By jmciver in forum Engine Management, OBD-II, Engine Diagnostics, etc.
    Replies: 6
    Last Post: 06-16-2006, 05:08 PM
  4. Replies: 2
    Last Post: 11-15-2005, 02:38 PM
  5. CoPilot Software or USB GPS Receiver package
    By Zip-Lock in forum Classified Archive
    Replies: 5
    Last Post: 05-13-2004, 08:30 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •