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rumble in the audio/signals have feathers

KB4OIF
KB4OIF Member ✭✭
in Community Topics

I am running a 8400M. I am hearing a slight rumble in my audio during receive. I have attached a video that shows it. It's about half way through the video. Also have attached a pic of my waterfall. Notice that all the signals have feather like things out from the signal. Any suggestions. can't get the movie to load, but it's there.

IMG_1180.jpeg

Best Answer

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    Answer ✓

    Wow.. that is a lot of EQ gain. You may wish to dial that back a bit.

Answers

  • ka9ees
    ka9ees Member ✭✭✭

    @KB4OIF I listened to what you posted on FB and didn't hear a thing. That looks like the station you're listening to is slightly overdriven. The feathering is the station's splatter.

  • KB4OIF
    KB4OIF Member ✭✭

    Good Morning ED. The movie does not give the whole picture. I just listened to the audio and yes it does not seem to have the rumble in there. Trust me it's there, not bad but it's there. If you notice, all of the signals have the feather like things on them. Can't be all of them are over driven.

  • ka9ees
    ka9ees Member ✭✭✭

    Good morning John,

    Can you do a screen shot and post that? What rig are you running and what version of SSDR? Not sure if you can post videos here.

  • ka9ees
    ka9ees Member ✭✭✭
    image.png

    Like this.

  • WX7Y
    WX7Y Member ✭✭✭✭
    edited December 2

    Try turning off ALL your DSP filtering, WNB, NB, ANF, NR and any others you have on and see if the Audio gets cleaner. The DSP Filters will cause weird REC fluttering where the Receiving station is a Strong signal to your station not really over driven but a high rf signal. Looks like from your screen shot you have NR and ANF on at least that are shown on the Desktop.

  • KB4OIF
    KB4OIF Member ✭✭

    Here is a pic from this morning. I listened for a long time yesterday and also this morning and I do not hear the rumble. None of the filters are engaged. Looking at the pic Ed posted, mine looks the same.

    IMG_1181.jpeg
  • KB4OIF
    KB4OIF Member ✭✭

    Just a quick note. I hear the sound now. It ""seems"" that it is only there when the station talking has a baritone type voice. could it be a setting I have set wrong?????

  • Trucker
    Trucker Member ✭✭✭✭

    Have you tried adjusting the receive audio eq? That might be contributing to the problem.

    James

    WD5GWY

  • KB4OIF
    KB4OIF Member ✭✭

    No I have not James. will have to read up on that. here is a pic of my settings.

    IMG_1182.jpeg
  • Trucker
    Trucker Member ✭✭✭✭
    edited December 3

    If those settings have been working for you in the past, they should still work depending on your hearing. If your problem is related to audio eq settings, try disabling the eq and see if the rumbling goes away. If it does, then you may need to make some adjustments to your settings as something in your hearing has changed. ( possibly)

    I will say this, I once had a set of powered speakers connected to a 6500 I had and it did something similar. It turned out that I had the volume on the powered speakers set all the way up and I was controlling the volume strictly from the volume slider in SmartSDR. I backed down the volume control on the speakers a bit and the rumbling went away. Even though the audio output on the back of the 6500 is a line level output, it was high enough to drive the internal audio amplifier in the powered speakers too much causing the rumbling. And yet,I have other powered speakers that don't do that.

    James

    WD5GWY

  • KB4OIF
    KB4OIF Member ✭✭

    Mike. I turned it back quite a bit.

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