Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 31

Thread: Are you interested in a standalone car mp3 player ?

  1. #21
    Raw Wave
    Join Date
    Jun 2003
    Posts
    1,823
    I guess hes talking about something similiar to this (posted a few days ago) :

    http://www.mpic3.com/

    IMO Ill say 3.5 in HDD is the cheapest solutions.

    Cant survive pot holes? Make a shock resistant box.
    No good below 0 deg C? Make a temperature controlled box for it.

    Even with those, the standard 200GB HDD is still much much cheaper than the 200GB of CF cards

    Just out of curiosity is the temperature of the HDD really critical? but whos gonna place the HDD outside the car? surely the HDD is to be placed inside where the temperature should be warm

  2. #22
    Raw Wave
    Join Date
    Jun 2003
    Posts
    1,823
    FM modulator will never be anywhere near a CD quality.

    If you really want to make a universal unit without having to use FM modulator then maybe you can try this :

    [HU speaker out] > [MP3 player with power AMP] > [Speaker]

    The HU speaker output is connected to the MP3 player with a built in power amp. The MP3 player takes in the attenuated signal from the HU. The MP3 player have a built in volume control and source select. The output the from the MP3 player built in AMP is then fed to the existing speakers.

    The MP3 player is basically inserted in between the HU and the speaker. The built in AMP replace the FM modulator

    Just a though Im sure it will work. The only problem is having to include an AMP and the HU signal may get deteriorated by the time it get to the speakers...and of course the size?

  3. #23
    FLAC
    Join Date
    Sep 2004
    Posts
    1,577
    Quote Originally Posted by Ricky327
    Just out of curiosity is the temperature of the HDD really critical? but whos gonna place the HDD outside the car? surely the HDD is to be placed inside where the temperature should be warm
    If it were really a problem, I'm sure all the people putting PCs in their cars would have mentioned it by now.

  4. #24
    Raw Wave
    Join Date
    Jun 2003
    Posts
    1,823
    Early models did suffer from poor audio quality, I use one now with no loss of signal.

    I find that hard to beleive though quality are already lost during modulations then more are lost when demodulating the signals. Even with the best FM chipset it will never be the same quality.


    EDIT :

    Ahh sorry my mistake, you said there was no lost of signals? but you didnt mention about the lost of quality

  5. #25
    Raw Wave
    Join Date
    Jun 2003
    Posts
    1,823
    If it were really a problem, I'm sure all the people putting PCs in their cars would have mentioned it by now.

    Exactly...thats what I was thinking too I havent lived in a place where temp reach well below zero...so I wouldnt exactly know if it can cause problems

  6. #26
    Newbie
    Join Date
    Oct 2004
    Posts
    10
    Hi all,
    I would specify some details:

    1)Losses of a Fm modulated signal occurs mainly in the modulation process -bandwith of such signal is limited to 15kHz - and quality can be compared to that of a good cassette recording. However, I think that in a car it sounds good, don't forgive that when engine is on or when you're in movement with your car there is more noise than that of a bad modulated signal...ops..don't remember we are dealing with mp3s and not with cd tracks.
    2)I used a compact flash memory not to have a lot of mp3s on board, but to have a practical system to manage my music....after a day of work I remove my CF from my car and I put it in the reader and in a few seconds I copy on it a new compilation. Compared to my previous hd system, I prefer to have less storage but easy management.

  7. #27
    Newbie
    Join Date
    Oct 2004
    Posts
    10
    Quote Originally Posted by TruckinMP3
    Post more details on your project... you will see more feedback.
    What kind of details ?..technical data(hardware, firmware) or functional data ?

  8. #28
    North of the land of Hey Huns
    Auto Apps:loading...

    Join Date
    Jun 2004
    Location
    Westminster, MD
    Posts
    2,127
    My CD changer uses an FM Modulator, and its good sounding, sounds just like the CD is in the drive so I dont think that's an issue. Only FM transmission has real quality problems, not direct wire connection to the antenna.
    "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
    RevFE
    My Shop

  9. #29
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    Quote Originally Posted by Ricky327
    Early models did suffer from poor audio quality, I use one now with no loss of signal.

    I find that hard to beleive though quality are already lost during modulations then more are lost when demodulating the signals. Even with the best FM chipset it will never be the same quality.


    EDIT :

    Ahh sorry my mistake, you said there was no lost of signals? but you didnt mention about the lost of quality
    Belive or not, I can not tell the differance switching from a CD to MP3 through the FM mod.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  10. #30
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    Quote Originally Posted by satriani
    What kind of details ?..technical data(hardware, firmware) or functional data ?
    Sure, What do you want it to do, how are you going to provide the solution.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

Page 3 of 4 FirstFirst 1234 LastLast

Similar Threads

  1. User help to design MP3 car CD radios
    By MP3Design in forum General MP3Car Discussion
    Replies: 13
    Last Post: 03-20-2006, 05:57 PM
  2. New Standalone MP3 Player
    By bgoodman in forum General Hardware Discussion
    Replies: 2
    Last Post: 10-20-2003, 08:30 PM
  3. Macintosh/iTunes Car MP3 Player
    By BlueCabbie in forum Software & Software Development
    Replies: 0
    Last Post: 06-23-2003, 01:06 PM
  4. New MP3 / DVD Player
    By leesilk in forum General Hardware Discussion
    Replies: 4
    Last Post: 05-22-2003, 04:16 AM
  5. My car mp3 player
    By Temujin in forum General MP3Car Discussion
    Replies: 11
    Last Post: 01-27-2002, 02:20 PM

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
  •