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Logic Pro X - Time & Pitch Editing

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Josh Pritchett

on 20 March 2015

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Transcript of Logic Pro X - Time & Pitch Editing

Logic Pro X - Time & Pitch Editing - Audio to MIDI
Expanding Audio
It is easier for a computer to compress an audio file (make it faster) rather then expand it (make it longer) - If you have a choice always go for speeding an audio file up!
Flex Pitch
Manipulating Audio
Time & Pitch Machine - Alter the structure of audio files - Compression, Expansion & Transposition
Week 4 - Friday 21st February
Joshua Pritchett
How to make Vocals sound realistic?
Flex Time - The Six Dots!
*AUDIO to MIDI*
Import an Audio track into Logic Pro X
Add one of your own audio tracks or use something from Apple Loops - It will be easier if you use a single instrument audio track - for example a bass.
Open up the Sample Editor
Double Click on the audio file or press the scissors tool which is located at the top left of the control bar.
Turn Flex Mode On
Click on the sideways hour glass to turn on flex mode. This will enable Logic to analyze the file and find its transients.
Import an Audio track into Logic Pro X
Change to Flex Pitch
Once you have hit flex pitch you will have something that resembles a piano roll for midi.
Create Midi from Audio Track
Go to the edit tab - find Create MIDI track from Flex pitch data
Midi track will be available on the workstation
The Midi track will be in the workstation.
Manipulate the Midi track to your specifications
Change the Midi instrument, use an appreciator or change the pitch! - It's important to remember the transients will not analyse it correctly every time so use your ears and change the feel, timing and pitch when needed.
Flex Time - Manipulating the time of audio tracks
Flex Pitch - Changing the Pitch of audio tracks - (A piano roll for audio)
Audio to MIDI - Changing an audio track to a MIDI track
Flex Time
Time & Pitch Machine
Open up the Sample Editor
Double Click on the audio file or press the scissors tool which is located at the top left of the control bar.
Turn Flex Mode On
Click on the sideways hour glass to turn on flex mode. This will enable Logic to analyze the file and find its transients.
Change to Flex Pitch
Once you have hit flex pitch you will have something that resembles a piano roll for midi.
Change to Flex Pitch
Once you have hit flex pitch you will have something that resembles a piano roll for midi.
Open up the Sample Editor
Double Click on the audio file or press the scissors tool which is located at the top left of the control bar.
Turn Flex Mode On
Click on the sideways hour glass to turn on flex mode. This will enable Logic to analyze the file and find its transients.
Change to Flex Time
Once you have hit flex time you will have the transients for the track highlighted.
The Time & Pitch Machine will change the whole region selected - it does not give you the same control as Flex Pitch or Flex Time - but for huge changes to an audio file it may be better!
Problems with the Time Machine?
It's important to remember that the time machine will only work with
Audio
tracks. If you are using anything that does not have a
Audio
track sign on it (two 00) then you need to bounce the
Audio
file in place before you can use the Time Machine with it!
Left Click
Changing Tempo
Changing Tempo & Pitch (Classic)
Changing Pitch
Time & Pitch Machine
TASK
Get an audio track (either accapella vocals or drums) and use Flex mode and the Time and Pitch Machine to manipulate the audio file you have!
The second half will be focused on Assessment 2 - We will have individual tutorials throughout this time to see how everyone is progressing.
Import an Audio track into Logic Pro X
Add one of your own audio tracks or use something from Apple Loops - It will be easier if you use a single instrument audio track.
Open up the Sample Editor
Double Click on the audio file or press the scissors tool which is located at the top left of the control bar. Make sure you click File in the Editor/Sample window
Click *
Functions
* & hit - Time & Pitch Machine
To Change the Tempo without changing the pitch make sure the mode at the top is
*FREE*

Change the Tempo by Changing the Destination
To Change the Tempo & the Pitch together you will need to change the mode to
Classic
- this tme to affect the audio track you will have to change the
Transposition
destination
To change just the Pitch of the track keep the Time and Pitch Machine in
Free
mode - Change the
Transposition
destination
Algorithm
Change the Algorithm depending on what your audio track contains!
Changing Notes
Use the Flex Pitch like an audio Piano Roll - change the pitch of different notes & also the length of them
1 & 3. Pitch Drift - 1 is changing the drift of the pitch at the start of the note - 3 is changing the drift of the pitch at the end of the note
2. Fine Pitch - Changes the pitch in tiny steps allowing you to go through the notes more accurately (Dragging each note will allow you to change the pitch by semitones)
4. Gain - Increase the attack and volume of individual notes
5. Vibrato - Change the rate in which a note vibrates
6. Formant Shift - This can make vocals sound more natural - the quality of the note may change the higher or lower the note goes - format shift allows you to change the parameters to allow the note to sound real
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2.
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4.
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6.
Move the track
You will be able to move each transient and change the timing of the original audio file.
Choose which Flex Pitch you would like to use
Monophonic for monophonic audio material—bass line, for example

Slicing for percussive, non-tonal audio material—drums, for example

Polyphonic for chords, or complex material—mixes, for example
Tempophone emulates the effect of an historical tape-based time-stretching device known as a tempophone, and results in a mechanical sound with many artifacts similar to those produced with granular synthesis techniques.
Speed time stretches material by playing the source material faster or slower, including pitch change. Because of the pitch shifting, this flex algorithm is mainly useful for percussive material, but it can be used on all material for interesting creative effects.
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