1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice

Making audio sound BETTER??

Discussion in 'Announcements & Open Forum' started by Dude111, Mar 2, 2013.

  1. Dude111

    Dude111 An Awesome Dude

    Joined:
    Aug 3, 2009
    Messages:
    212
    Likes Received:
    19
    An interesting Read on DOLBY



    http://web.archive.org/web/20090521..._Dolby_B,_C_and_S_Noise_Reduction_Systems.pdf

    I think anytime you apply a filter,IT CAN MAKE IT WORSE!!!!!

    The cassette player in our car for example has a button to ENABLE OR DISABLE NR -- I always leave it disabled AS IT SOUNDS WORSE WITH IT ON!!
     

  2. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    15,108
    Likes Received:
    6,785
    Cassettes?? I remember those. :D The thing about Dolby noise reduction is it depends on just HOW the audio was recorded in the first place and what type of tape,normal, metal, or chrome, all of which require a different recording bias. It has to be recorded in Dolby and has to be recorded at a higher lever, typically 6 dB higher. Also use of a noise reduction is highly subjective as every listener has a preference as to how much bass or treble they like. Having spent 22 years in the broadcast industry I can say that you can never please everyone all the time so why even try. EVERYTHING was recorded with a flat frequency response within 1 dB from 20 Hz to greater than 15 KHz. This allowed the listeners to tailor the sound however they wished as again, everyone has a different opinion of what sounds good.Having been in the industry I have a different opinion that someone else and I am often appalled at what some consider to be good. When i hear a singer on stage that is ear shattering LOUD but sounds like they are muffled and far too bassy then it is not good nor are vocals that are covered by the band but it is amazing just how many times you hear that crap on a stage.
     
    2 people like this.
  3. Lil'Yeshua

    Lil'Yeshua .......

    Joined:
    Nov 22, 2012
    Messages:
    4,625
    Likes Received:
    285
    I had a high end ($275.00)Radio Shack(read Kenwood)car stereo/cassette player with Dolby A&B noise reduction. With a tape recorded and made for Dolby NR,it really sounded good(1980's). My first stereo amp was a Radio Shack 50 watts RMS@channel amp which was made by Kenwood. I have a Blaupunkt Bremen MP76 nowadays
     
    #3 Lil'Yeshua, Mar 2, 2013
    Last edited: Mar 2, 2013
  4. Dude111

    Dude111 An Awesome Dude

    Joined:
    Aug 3, 2009
    Messages:
    212
    Likes Received:
    19
     
    #4 Dude111, May 26, 2013
    Last edited: May 26, 2013
  5. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    15,108
    Likes Received:
    6,785
    In your opinion. See my post above. Dolby nlise reduction does what it was intended yo do. Reduce tape HISSSSSSSSSS.
     
  6. bob85

    bob85 Supporting Member

    Joined:
    Mar 30, 2005
    Messages:
    2,899
    Likes Received:
    642
    dolby on a quality tape deck did worked to reduce tape hiss and still allow you to hear the high frequencies, if the tape was recorded with dolby it should sound very bright & hissy when replayed without dolby,

    some reasons a dolby tape may sound better with dolby replay turned off

    master tape not recorded correctly
    crap player ( 99.9% of all car stereo )
    crap quality tape
    poor quality recording/ bias not set right for tape etc
    dirty head
    replay head azimuth not aligned to the machine that made the tape
    poor hf response in the system more likely speakers
    poor hf response in your ears
     
    1 person likes this.
  7. Lil'Yeshua

    Lil'Yeshua .......

    Joined:
    Nov 22, 2012
    Messages:
    4,625
    Likes Received:
    285
    I got a DSP circuit board and plans from CBC International - books plans kits modifications repairs for CB radios .
    It utilizes speech compression. The component assembled board can be bought for $42. The plans show how to tailor the sound and mod/volume levels. I think that would help and the right mic. The circuit to control audio tone would help too. I posted on another thread a YouTube video some guy built one for a D104.
     
  8. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    15,108
    Likes Received:
    6,785


    I agree. We used to have Tascam (Teac) 122 Mk2 professional cassette decks in the studios back in the mid/late 80's or so. Back then they were about $1200 each and had Dolby B and C as well as well as normal/metal/chrome settings that would be set automatically when you inserted a tape. That's when I first learned about the little holes in the cassette shell and what they were for. LOL. With properly aligned heads (we did our own with proper alignment tapes) a cassette recorded in Dolby could sound REALLY good believe it or not.
     
    1 person likes this.
  9. psycho

    psycho Running a special on our rooms!

    Joined:
    Aug 25, 2006
    Messages:
    3,390
    Likes Received:
    1,163
  10. Lil'Yeshua

    Lil'Yeshua .......

    Joined:
    Nov 22, 2012
    Messages:
    4,625
    Likes Received:
    285
    I still think that song is cool. The eighties,a different era altogether
     
  11. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    15,108
    Likes Received:
    6,785

    So were the 70's but I still don't want to relive the disco era. :eek:
     
  12. Lil'Yeshua

    Lil'Yeshua .......

    Joined:
    Nov 22, 2012
    Messages:
    4,625
    Likes Received:
    285
    I never went to a disco but wore disco shirts and semi bell-bottom jeans in high school
     
  13. Mudfoot

    Mudfoot Sr. Member

    Joined:
    Jun 17, 2009
    Messages:
    8,480
    Likes Received:
    2,797
    Did you have a Greg Brady poster in your room?
     
    1 person likes this.
  14. Lil'Yeshua

    Lil'Yeshua .......

    Joined:
    Nov 22, 2012
    Messages:
    4,625
    Likes Received:
    285
  15. Mudfoot

    Mudfoot Sr. Member

    Joined:
    Jun 17, 2009
    Messages:
    8,480
    Likes Received:
    2,797

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!