AudioSculpt
Public Group active 2 weeks, 5 days agoUser Group for AudioSculpt, AudioSculpt Lite and Analysis/Synthesis Command-line Tool users.
Frequency Shift Inconsistent
Author | 3 Subscribed Users | |
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Sherk SCOTT |
I have been attempting Frequency Shifting and have been getting inconsistent, bizarre results. I have attempting rather radical shifts (-400 Hz, -500 Hz, -1000Hz). What I have found is that the shift take an unexpected additional shift at an unexpected spot randomly. This only happens when processed. When I listen to the shift before processing, everything sounds great. After processing, the new file begins fine, but after 30 seconds or so takes an unexpected 50Hz shift up or down. The unexpected shift is consistent throughout the spectrum. I made some files of pure sine waves to test this. The same thing happens. In a 60 sec file of 5 sine waves, an additional unexpected shift occurs at the 42 sec mark. I feel that I am missing something simple here. Any thoughts? |
July 3, 2018 at 22:46 #27047 | |
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Hi Scott, Could you please send us the command line of the processing, mainly to ensure there is no other options taken into account and sent to supervp that may produce this strange behaviour. Also, you can also try when you process your file to revert to the “Factory Settings”. The third option would be also to take a look at the “shiftfile” produced by AudioSculpt. It is located at “AudioSculpt folder”/Temp/shiftfile. Thanks a lot for your feedback, Best regards |
July 4, 2018 at 09:09 #27050 | |
Sherk SCOTT |
Thank you for your response. Here is the command line for the processing: total time = 10.23 seconds I processed a second time with “Factory Settings” and received the same result. Here is the Shiftfile: Thanks for your help. |
July 4, 2018 at 16:57 #27057 | |
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Hi Scott, OK Seems like we have a bug We’ve been able to reproduce it for different values, different timings, and not only when we process but also during a “realtime” processing. Thanks a lot for your feedback and report. Best regards, |
July 5, 2018 at 10:08 #27059 | |
Sherk SCOTT |
Thanks for addressing the issue. I look forward to the update. In the meantime, any ideas about a work around? I tried using shorter files, but still had erratic results. |
July 5, 2018 at 17:50 #27060 | |
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Hi Scott, mmm… i am afraid there is no workaround for now. Unless you find and download an older version of AudioSculpt 3.x whose frequency shift treatment is not broken. Best regards, |
July 5, 2018 at 18:42 #27068 | |
![]() Axel Roebel |
Hello Scott, it turns out the implementation was broken since the very beginning of the frequency shift algorithm (~15 years ago!). So the bad news is: old releases will not help. The good news is that the fix was really simple, and the new implementation is now more precise in shifting Thanks for your patience. |
July 5, 2018 at 23:11 #27082 | |
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Hi Scott, A new version of AudioSculpt (3.4.6) has been uploaded. It should fix the frequency shift bug. best regards, |
July 9, 2018 at 16:54 #27094 | |
Sherk SCOTT |
Brilliant! That seems to have done the trick. I tested with sine waves over i minute and found no variation on the frequency shift with either realtime or processed. |
July 11, 2018 at 02:32 #27099 |
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