SYNCHRON-ized Appassionata Strings Sordino


Welcome to the Vienna Symphonic Library's series of Synchron Instruments! SYNCHRON-ized Appassionata Strings Sordino was specifically created to enrich your tonal palette with the magnificent, larger-than-life cinematic sound of these lavish string ensembles, optimized for our Vienna Synchron Player, and perfectly balanced to interact with Synchron Strings Pro, Synchron Strings I, SYNCHRON-ized Appassionata Strings and SYNCHRON-ized Chamber Strings. This document will provide you with the information you need to use the Library with Vienna Synchron Player.


The Presets of each instrument group are subdivided into 8 different Articulation categories (plus a ninth named "Custom", ready for your own creations):

  • Short notes
  • Long notes
  • Legato
  • Dynamics
  • Tremolo
  • Arpeggios
  • Fast repetitions
  • Pizzicato

Within these Articulation categories, you can select a Type (if applicable), e.g., normal or fast legato, and for some of the types there are additional options available, .e.g, vibrato variants.

About Presets

SYNCHRON-ized Appassionata Strings Sordino offers three basic Preset types for every section in separate folders named "VelXF sus - MOD", "VelXF - MOD", and "Velocity". In the first, velocity crossfading is only activated for long notes, while the dynamics of short notes as well as marcato options are controlled by keystroke velocity, thus facilitating phrasing. In the second, all articulations have velocity crossfading activated so that you can control dynamics with MIDI controller CC1, the modwheel. Velocity crossfading can be enabled or disabled by clicking its on/off symbol in the Synchron Player's Perform tab, or you can use the 'Velocity' Preset where the dynamics are generally controlled by keystroke velocity.

Apart from the individual string ensembles, there are also Presets combining all ensembles, which you will find especially useful for quick layouts and for playing an entire string orchestra live!

About Patches

Patches can be used to build your own custom Presets and adapt the Synchron Libraries to your specific requirements.

Mixer Presets

For SYNCHRON-ized Appassionata Strings Sordino, our software developers added a specifically designed convolution reverb derived from Vienna MIR Pro to the Synchron Player, featuring the outstanding and unique ambience of the 540 m2 (5,813 sq.ft.) main hall of Synchron Stage Vienna. The perfectly engineered reverberation and placement presets combine customized impulse responses with expertly crafted reverb settings for each group of the ensemble. By adding the ambience of Synchron Stage Vienna's Stage A to the dry samples in real-time, SYNCHRON-ized Appassionata Strings Sordino perfectly blend with any other product of our Synchron Series.

For each ensemble, there are Mixer Presets that depict different recording situations and sound options: Close, Classic, Wide, Distant, Ambient, Silk, short and long reverb without convolution, and MIR unprocessed.

About Pitch

For designating pitch, the Vienna Symphonic Library uses International Pitch Notation (IPN), which was agreed upon internationally under the auspices of the Acoustical Society of America. In this system the international standard of A=440 Hz is called A4 and middle C is C4. All pitches are written as capital letters, their respective octave being indicated by a number next to it. The lowest C on the piano is C1 (the A below that is A0), etc.

The Synchron Player software allows you to set middle C to C3, C4, or C5 according to your preference. Selecting another setting than C4 will of course also change the play ranges and keyswitches accordingly.

Included Presets

The collection's Presets comprise all recorded Patches in Articulation groups, which again contain Types of the respective Articulation, with further options if available.

By default the keyswitches for Articulations are mapped from C1 to G#1 (for Middle C = C4) for violins, violas, and cellos, and C5 to G#5 for the double basses. For the available Types, the keyswitches start from F2 for violins and violas, and from F6 for cellos and basses.

Additional options within Articulations or Types are offered by the Dimension Controllers. The controller function is indicated by the respective caption, as of course it may take on different tasks as needed.

Strings all Preset

Apart from the individual string ensembles, there is also a Preset featuring Patches containing all ensembles. They are especially useful for quick layouts and for playing an entire string orchestra live!

  • Mapping range: B0–C7

    • Basses: B0–B2
    • Cellos: C2–B3
    • Violas: C3–F#4
    • 2nd violins: C4–C7
    • 1st violins: G4–C7
  • Articulation keys: C~–G#~

  • Type keys: starting at F0

Double Basses Preset

As the Double Basses have a limited range of articulations compared with the other ensembles, their Preset is adapted accordingly. Instead of legatos, there is a copy of the long notes slot, while the arpeggio and fast repetition slots remain empty.

Short notes

Spiccato, staccato, détaché, and performance spiccato. Basses: short and long staccato.

Long notes

Sustained notes normal and marcato. Use Dim.Ctrl/B (CC1) to switch between regular and progressive vibrato as well as the "finding tune" variant (except basses).

Vibrato switch: Dim.Ctrl/B (CC3)


As above, but with the option to add marcato attacks to the notes. Marcato amount control depends on Preset type (see above).


Performance legato normal and sforzato, fast, slurred, portamento, and auto-speed. The basses here have a copy of the Long notes slot.

Normal, Portamento

Use Dim.Ctrl/B (CC3) to switch between vibrato styles and the "finding tune" variant.


This option implements a speed controller on Dim.Ctrl/D to switch automatically between normal and fast legato.


Sforzato, and crescendos/diminuendos 2/3/4 seconds. Basses: sforzato only

Cres/dim length: Dim-Ctrl/B (CC3)


Tremolo normal, and with the option to add a marcato attack.


Major and minor arpeggios with ringing or cut release. Basses: empty slot.

Release switch: C2/D2 (violins, violas), C6/D6 (cellos).

Fast repetitions

Fast repetitions from 150 to 190 BPM, with ringing or cut release. Basses: empty slot.

Release switch: C2/D2 (violins, violas), C6/D6 (cellos).


No further options.