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VoiceGuy15265293
VoiceGuy15265293
Known Participant
January 17, 2025
Question

Digital "blips" in playback?

  • January 17, 2025
  • 1 reply
  • 478 views

This is a whole new thing - I've been using AA for many years with this exact setup, and suddenly this issue.  The only difference is that the speaker isn't me - I'm engineering.   And - I don't hear this while monitoring live!!

Please review the :07 sample attached.  

 

These are the Amp. Stats:

Channel 1
Peak Amplitude: 0.02 dB
True Peak Amplitude: 0.07 dBTP
Maximum Sample Value: 32826
Minimum Sample Value: -28479
Possibly Clipped Samples: 25
Total RMS Amplitude: -25.88 dB
Maximum RMS Amplitude: -8.72 dB
Minimum RMS Amplitude: -92.64 dB
Average RMS Amplitude: -40.58 dB
DC Offset: 0.00 %
Measured Bit Depth: 32
Dynamic Range: 83.92 dB
Dynamic Range Used: 70.05 dB
Loudness (Legacy): -21.74 dB
Perceived Loudness (Legacy): -18.58 dB
ITU-R BS.1770-3 Loudness: -25.01 LUFS
 
0dB = FS Square Wave
Using RMS Window of 50.00 ms
Account for DC = true

 

Setup is: 

Windows 10pro with plenty of space

AA up to date

Microphone:  Neumann U87Ai  

Voice booth

Speaker approximately 8" from mic

1 reply

SteveG_AudioMasters_
Community Expert
SteveG_AudioMasters_Community Expert
Community Expert
January 17, 2025

Can you supply an example as a wav file? MP3s are notoriously crap when it comes to diagnosing anything...

VoiceGuy15265293
VoiceGuy15265293Author
Known Participant
January 17, 2025

Sure - here's a :13 sample in wav with four examples. 

VoiceGuy15265293
VoiceGuy15265293Author
Known Participant
January 17, 2025

Okay - if you didn't get this on monitoring, it's presumably because you monitored the input feed - either before it got digitised, or saved. Q1 -Was this a Waveform or Multitrack recording? Before you answer that, have a look at this:

The bit I've put a ring around is seriously distorted. The two arrows point to bits of 'silence' that have been recorded. The first one is interesting, because it's a small section where the encoding has effectively stopped mid-stream, and the second larger flat line is another example of the same thing. Q2 is 'what interface are you using?'


Thank you for all of your feedback so far, Steve!

Did you have any more insight?   I've got another session on Monday and would like to avoid this going forward.   

Also, I researched & found "Input Monitoring".   I don't think I can do this as the talent will hear that feed while recording and it will distract him.   

Regardless of using IM or not, I'd really like to solve this - is there any more info I can offer that will help to that end?   I'm at a loss.    

 

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