Trying to use Audacity 2.1.0 to fix, repair or reduce the snap/pop in this recording.
Just started looking at Audacity and wondering if I could get a bit of a spoon feeding.
Best Regards,
Kevin M.
You’ve picked an impossible-task as your first job. Damage-limitation is possible by simply cutting out the worst bit (about 1/50th of a second) , however the metal ping noise rings for about 1/5th of a second, which is too long to just cut-out of the time-line , notch-filters are required to remove the ringing notes …
Thanks for response…it helps that I am on the right track…Couple of observations and at least one question. Since the performer was a soprano i checked out typical frequency ranges that sopranos perform in, as well as compared the spectral analysis of a ‘good portion’ of the waveform with the portion of the waveform that contained the snap. From this date i highlighted just the section of the snap and instantiated a low pass filter with the corner frequency 1khz or so above where soprano’s typically perform, and where there appeared to be no frequency content shown in the good portion. This got rid of a fair bit of the snap. I then added notch filters over top of the low pass at a couple of different frequencies that i calculated from the timeline data. this got rid of a bit more of the snap. there is a hollow pop yet that you can hear in the background, much like putting your finger in your cheek and popping it out lightly. What I am noticing though is that the recording seems to have lost some of it’s brightness.
My question: when i have just the section of the waveform highlighted with the noise and apply the low pass & notch filters is that the only section that the algorithms are applied to? It appears that way when i replotted the spectral analysis as I worked on each noise spike separately.
What then would explain why the recording appears to lose brightness? Could just be my hearing as well as i worked on this for a fair bit of time. Did ask another party to listen to each waveform though, before and after and they agreed that the waveform I worked on appeared to lose ‘brightness’.
Now I need to learn how to cut and paste to maybe help a bit more with the clean up.
Thank you!
If you applied a [wide] notch-filter to the entire track, rather than just the noise, it could make the recording lose brightness. Audacity has a spectrogram view where you can see the frequency-content Versus time, allowing you to see when notches are applied …
http://manual.audacityteam.org/o/man/click_removal_using_the_spectrogram_view.html