Home › Forums › BreakawayOne › breakaway one in fm , is mono ,, not is stereo
- This topic has 10 replies, 4 voices, and was last updated 3 years, 8 months ago by DrSandi.
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March 14, 2021 at 4:16 am #16405djdiabolixParticipant
the breakaway one in fm, the sound is mono, it is not in stereo, the conclusive proof is with the queen theme – bohemian raphsody the beginning, when you go from one place to another the song is not appreciated in fm, only in HD O STREAMING but in fm mode the audio is mono, not stereo
the card is at 192kbps but sound is mono
March 14, 2021 at 7:15 am #16406pos1Participantonce again check the sound card settings in windows (advanced mode-default format should be 192KHz / 16 or 24bit). Also check if the BAO is connected via the MPX input to the transmitter
March 14, 2021 at 7:32 am #16407djdiabolixParticipantthis is 192kbhz 24 bit , , see rds , and stereo but audio not is stereo is mono
the song bohemian rapdsoy , no listen effect balanced audio , i listen mono
March 14, 2021 at 7:33 am #16408djdiabolixParticipantthe card is realtek
- This reply was modified 3 years, 8 months ago by djdiabolix.
March 14, 2021 at 8:08 am #16410pos1Participantgalileo figarooo;) there may be a number of other reasons for mono but without a spectrum analyzer it all comes down to speculation. first, the simplest, try listening on another radio. If it is on the other “mamma mia” on both channels, there is a suspicion of a realteck chip that cannot push a flat response up to 57KHz or is up to a transmitter with a similar problem.
What you can try is the following: on another computer that has a 192khz sound card (assuming it’s ok), install cooledit / audition. On line in connect the BAO signal from the first computer. Enable quick sweep in BAO settings. On cooledit choose 192KHz recording. During recording, choose spectral analysis.
If everything is OK you should see an almost straight line up to 57KHz. If you see more attenuation on any part of the spectrum, a sound card is not ok for this purpose.
March 14, 2021 at 8:19 am #16411djdiabolixParticipantHow do you do that, tell me step by step what to do? please, with image or video please
March 14, 2021 at 9:04 am #16412pos1Participantit is not so complicated..
1.BAONE go to -“Misc”- “MPX Output” 1or2 -“test generator” (set to Qsweep)
2.Soundcard output of PC1 connect to “line in” on 2nd PC
-Make sure that PC2 has 192KHz soundcard and it is set to 192KHz samplingrate (recording and playback). Otherwise the test makes no sense!
3.Install adobe audition on pc2
4.Start recording (new waveform set to 192000)
5.Press alt and Z for frequency analyzer
That is it!
March 14, 2021 at 9:35 am #16413djdiabolixParticipantok thank you
March 14, 2021 at 1:46 pm #16414MilkyKeymasterWhy not just pull out one of the inputs (or slide balance control hard R or L) and see if the signal follows the input. If that works, the problem is in the playout software or streaming process.
March 15, 2021 at 1:28 am #16415pos1Participantif BAO HD output produce stereo for streaming, as he said, then the input should be ok. Of course, assuming that the identical input for hd and mpx at bao setup is selected.
March 27, 2021 at 3:36 am #16433DrSandiParticipantIt could be that the output jack on the RealTek isn’t passing the full audio bandwidth. I have been up this road.
Try using the headphone jack, or installing jumper to the audio jack on the audio card board to pull out audio.
Different capacitors on different output jacks is what I’ve heard as the explanation of this phenomenon. When this happens to me, I get a stereo light, but a high pass filter was apparently sucking out the L+R audio and anything else above maybe 20KHz or so. So no 38kHz stereo difference signal for the radio to process.
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