Beat Mapping

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Beat Mapping

Permanent link to this post Posted by skothk » Sun May 14, 2017 7:45 pm

Hello,

I've been using Audacity for year and years, love the tool for basic editing of my audio tracks.

So a little background as to what I want to achieve and would be grateful if the community can advise if Audacity has this capability.

I am in the process of recording close to 1000 vinyl records I have in my collection to mp3. I have a process for recording direct to audio file (yes it's time consuming :D ), so no assistance needed there.

I want to ensure the audio is at an exact BPM from start to finish (example 130 bpm). Reason for this is when tracks are loaded in to a digital DJ Software I can set the BPM and sync BPM on both deck which means I don't have to worry about beat matching.

I had used Sony Music Studio 8 some year back to trim, de-click and set a constant bpm using Advanced Beatmapper and beat markers, example video here --> https://www.youtube.com/watch?v=iA8AhpWn7Aw. The end result is perfectly smooth BPM, start to finish.

Does Audacity have a similar ability? If so I would be grateful for any advice.

Thank you in advance.

skothk
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Re: Beat Mapping

Permanent link to this post Posted by kozikowski » Sun May 14, 2017 9:11 pm

records I have in my collection to mp3....no assistance needed there

Or maybe not. Any reason you're using MP3 instead of the much higher quality WAV? Yes, MP3 is efficient, common and creates small files, but it also adds compression distortion and restricts further use of the music.

Everybody Knows you should create MP3s but not that many people know the shortcomings.

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Re: Beat Mapping

Permanent link to this post Posted by skothk » Mon May 15, 2017 9:54 am

Thank you for responding. The vinyl to MP3 conversion process involves first recording to WAV then post processing before encoding to MP3. I will always have the original unedited WAV format, MP3 is more mobile and takes up less space.

My question is more around if it's possible to achieving a constant bpm using Audacity like shown in the link video? Do you have any advise around this?

Thanks

Skothk
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Re: Beat Mapping

Permanent link to this post Posted by steve » Mon May 15, 2017 10:10 am

You can stretch tracks with the "Change Tempo" or "Change Speed" effects
http://manual.audacityteam.org/man/change_tempo.html
http://manual.audacityteam.org/man/change_speed.html

There are also some optional "Nyquist Plug-ins" available that may be helpful.
To install Nyquist plug-ins, see: http://wiki.audacityteam.org/wiki/Downl ... ns#install

There's an optional plug-in called "Beats Per Minute Labels" that can produce suitably spaced labels to aid visual alignment
https://forum.audacityteam.org/viewtopi ... 21#p155621

There is a simple BPM counter plug-in:
https://forum.audacityteam.org/viewtopi ... 03#p150303

and a BPM calculator:
https://forum.audacityteam.org/viewtopi ... 33#p196933
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
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