User manual

Table Of Contents
322
Audio processing and functions
About time stretch and pitch shift algorithms
About time stretch and pitch shift algorithms
In Cubase, time stretching and pitch shifting algorithms are used for numerous
operations (e.
g. the Time Stretch and Pitch Shift offline processes, in the Sample
Editor, or by the Flatten function). Depending on the feature, some or all of the
following algorithm presets are available.
élastique
The élastique algorithm is suited for both polyphonic and monophonic material. The
algorithm has three modes, and there are three presets for each mode. The following
modes are available:
- élastique Pro – This mode offers the best audio quality, without formant
preservation.
- élastique Pro Formant – This is the same as the Pro mode, but including formant
preservation.
- élastique efficient – This mode requires less computing powers, but has a lower
audio quality than the Pro modes.
These modes are available with the following variants:
- Time – Timing accuracy is favored over pitch accuracy.
- Pitch – Pitch accuracy is favored over timing accuracy.
- Tape – The pitch shift is locked to the time stretch (as when playing back a tape
with varying speed). Stretching the audio material to a longer duration
automatically decreases its pitch. This variant has no effect when used in
combination with event transpose or the transpose track.
Peak Amplitude The largest amplitude in dB.
True Peak The maximum absolute level of the audio signal waveform in the
continuous time domain.
DC Offset The amount of DC Offset as a percentage and in dB, see “Remove
DC Offset” on page 310.
Resolution The current calculated audio resolution.
Estimated Pitch The estimated pitch.
Sample Rate The sample rate.
Average RMS
(AES-17)
The average loudness in accordance with the AES-17 standard.
Max. RMS The highest RMS value.
Max. RMS All
Channels
The highest RMS value of all channels.
Integrated
Loudness
The average loudness over the whole title in LUFS (Loudness Unit,
referenced to Full Scale) in accordance with EBU R-128 that
recommends to normalize audio at -23
LUFS (±1 LU).
Loudness Range The dynamic range over the whole title in LU (Loudness Units). This
value allows you to see if dynamic processing is needed.
Max. True Peak
Level
The maximum value of the audio signal waveform in the continuous
time domain.
Max. Momentary
Loudness
The maximum value of all momentary loudness values, based on a
time window of 400
ms. The measurement is not gated.
Max. Short-Term
Loudness
The maximum value of all short-term loudness values, based on a time
window of 3
s. The measurement is not gated.
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