Request help with settings – Broadcast Trial has crackling

Home › Forums › Breakaway Professional Products – [discontinued] › Request help with settings – Broadcast Trial has crackling

Viewing 4 posts - 1 through 4 (of 4 total)
  • Author
    Posts
  • November 6, 2009 at 10:41 pm #545
    Anonymous
    Guest

    Hi,

    I’ve heard from several friends how great Breakaway is with a personal FM transmitter, so I wanted to give it a try.

    I downloaded the trial and I definitely hear a wonderful quality difference that I really like, but I also hear intermittent crackling.

    Here’s my setup:
    1. OtsAV DJ Pro-Classic: Source of my music set to go to Breakaway Pipeline 1
    2. Breakaway Broadcast Processor
    * Plutonium Preset
    * Pre-Emphasis: 75us
    * L/R Out De-emphasis ON
    * L/R Ref Level -8.00 dB (to sound about as loud as other stations)
    I/O CONFIGURATION
    * Input – KS, Breakaway Pipeline 1, 44100, 2 channels
    * L/R Out – KS, Sound Blaster Audigy, 44100, 2 channels
    * Common – Audio Realtime Priority – ON, Buffer Size: Large, Optimize CPU Usage
    3. Sound Card – Sound Blaster Audigy SE 24-bit 96kHz/100dB
    4. FM Transmitter: EDM-LCD-RDS-EP, (10/100mW PCB, Regulated 12V PSU, 10mW)

    Can you please recommend what settings I should put in the I/O Configuration and the Signal Settings so that I can get the best quality test of the Breakaway software?

    Thanks in advance for your help!
    Kevin

    November 7, 2009 at 12:41 am #8902
    Leif
    Keymaster

    Hi Kevin!

    I’m guessing the crackling is coming from CPU overload. However…

    OK, what I’m about to tell you is probably the worst business decision ever, but with that transmitter, you actually don’t need Breakaway Broadcast. You’re not using BBP’s stereo encoder, all you really need is proper pre-emphasis peak limiting for FM.

    Breakaway Audio Enhancer for $29.95, in FM Mode, will actually do the job. The version with FM Mode is new, not officially released yet, but a beta is available here:
    viewtopic.php?f=2&t=740

    To clarify what the FM mode in BAE does:
    It applies pre-emphasis, runs a low-cpu low latency advanced distortion cancelled clipper, and then applies de-emphasis and outputs the audio in L/R form. It does not contain a stereo encoder.
    This will not yield perfect peak control on the air, but it will will usually get by with less than 20% overshoot on the air, which is very nice compared to the 300% overshoot you have if you run a transmitter with a non-fm processor. For a 100mW transmitter, a 10% or 20% overshoot does not matter in the slightest, and thus the FM mode will do it. It’s like this feature was designed for you, Kevin 😉.

    I myself use BAE FM mode in my netbook (30% cpu usage on an atom cpu!) when I’m away from home. With a tiny little transmitter, i get close to broadcast quality and low enough latency to, say, watch a movie with the audio coming out of a nearby radio, instead of the horrendous netbook speakers. Works well for playing music in rental cars too 😉.

    Anyone with a professional transmitter (MPX input, higher power), however, still needs BBP.

    ///Leif

    November 7, 2009 at 1:50 am #8903
    Anonymous
    Guest

    Hi Leif,

    Thank you so much for your quick reply and your honesty. I really appreciate it!

    I’ll download the beta and give that a shot.

    Thanks very much!
    Kevin

    November 9, 2009 at 12:21 pm #8904
    timmywa
    Participant

    You might also benefit some by changing your Output section to KS, Audigy, 48000. I have the same card and that has improved things greatly. I found the Audigy SE runs natively at 48000 and will have to down-sample (or whatever that term is) to 44,100 which isn’t that accurate.

  • Author
    Posts
Viewing 4 posts - 1 through 4 (of 4 total)
  • The forum ‘Breakaway Professional Products – [discontinued]’ is closed to new topics and replies.