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Tape Speed Correction Software - Google Groups
https://groups.google.com/g/rec.audio.pro/c/q7Dc4zXleUw#:~:text=Use%20FFT%20analysis%20to%20determine%20the%20hum%20frequency,to%20apply%20any%20kind%20of%20EQ%20or%20notch
Tape Speed Correction Software - Google Groups
https://groups.google.com/g/rec.audio.pro/c/q7Dc4zXleUw
Use FFT analysis to determine the hum frequency on the tape and adjust speed until it gets correct. You have to do it to apply any kind of EQ or notch filtering anyway. I …
Stereo Lab - Tape equalisation correction - Pspatial Audio
http://pspatialaudio.com/tape%20equalisation%20correction.htm
Introduction. Equalisation of any analogue tape medium results from the requirement to compensate for limitations in the medium itself. These limitations are a function of linear tape speed so that equalisation varies according to the standard tape speeds of: 30 ips*, 15 ips, 7.5 ips, 3.75 ips and 1.875 ips.
Speeds – Richard L Hess—Audio Tape Restoration Tips & Notes
https://richardhess.com/notes/formats/magnetic-media/magnetic-tapes/analog-audio/speeds/
The Philips Cassette has made this speed respectable. Nonetheless, many people used this speed when it became available for the purpose of putting a lot of information on a short reel of tape. It was never considered a professional speed. 3-3/4 i.p.s.—This speed was very common in home use and even some pre-recorded tapes were sold at this speed.
Audio Speed Changer - Change Tempo Online
https://mp3cut.net/change-speed
1 Drag or select your files You can drop any file into the Audio Speed Changer window, or open files from URL, Dropbox and Google Drive folders. 2 Edit your audio Use a slider to adjust the speed of your audio file. Moving it to the right increases the speed, moving it to the left decreases the speed. 3 Choose the audio format
Speed correction restoration of analog tape source ...
https://forum.cockos.com/archive/index.php/t-183074.html
10-25-2016, 03:59 PM. Humm, there might be some software to do this. In the old tape days it took two sources (tape decks) to do this and it worked very well. But that worked with the phase between the two sources, which you adjusted by varying the speed of the capstan of one or both tape decks.
A Brief History of Pitch Correction in Music - iZotope
https://www.izotope.com/en/learn/a-brief-history-of-pitch-correction-in-music.html
By slowing down or speeding up a part of a recording and splicing with the tape containing the majority of the song, engineers could alter pitch. Another method of varispeed pitch correction was to slow a tape machine down, re-record a new part at a lower pitch, and then bring the recording back up to its original speed.
reel to reel tape transfer of rim drive or capstan free ...
https://thegreatbear.net/audio-tape/rim-drive-reel-reel-tape-transfer/
Rim drive tapes can be transferred to digital via conventional capstan drive machines at 3.75 ips. Then, using the non-linear speed change feature in the Diamond Cut DC8 software, one can “straighten – out” the speed variance so that it become constant. The software pvovides a graphical method for settup up the speed correction profile.
Synchronizing video and audio tracks without time code
https://www.sheldonbrown.com/synchronize-video.html
To adjust speed, I use the free audio editing application Audacity -- available for Windows, the Macintosh and Linux. (Be sure that you have version 2.2.3 or later-- earlier versions had a bug in the Change Speed function). To adjust the audio speed: Check the frame rate of the video. This is important, because it figures in your calculations.
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