MSpectralDynamics is a multiband compressor and loudness maximizer plugin. However with features such as custom processing shape it can provide a wide range of effects. Additionally it provides a free-form linear phase equalizer with range from -80dB to 0dB, which you can use to fix issues with your recording.

Unlike Multiband compressors, MSpectralDynamics does not have any bands but works with the entire spectrum instead. It approximates energy located in each frequency and applies the dynamics to it separately. You can perform spectral compression to balance the spectral energy and increase loudness with minimal amount of artifacts. You can apply spectral expansion to excite frequencies and increase sound clarity.

Features:

• Spectral dynamic processing - other compressors perform dynamic processing in the time-domain, MSpectralDynamics performs the same actions in frequency domain, where you can increase loudness, balance frequencies etc.
• Free-form equalizer - a complementary feature of MSpectralDynamics is a free-form linear-phase equalizer with range from -80dB to 0dB editable using MeldaProduction Envelope System (MES).
• Power spectrum analyzer - integrated spectrum analyzer gives you accurate view of input and output spectral dynamic profile, gain reduction per frequency and free-form equalizer.
• 2 independent compressor/expander units with ratios from 1:4 to 20:1 and infinity, adjustable range and knee.
• Advanced gate unit with adjustable size and knee.
• Custom processing shape - by enabling this feature MSpectralDynamics immediately inherits the original processing envelope and you can modify it using the MeldaProduction envelope system (MES) technology, that lets you easily create any dynamic processing shape you like.
• Advanced and easy-to-use user interface - you can easily change all values and gain maximal accuracy using textual editing. Smooth visualisation of resulting response with almost unlimited zooming.
• Resolution, smoothness, slope, threshold shape - spectral detector provides advanced features defining how MSpectralDynamics analyzes and processes sound with various resulting time and spectral response.
• Advanced dynamic detector featuring manual and 4 automatic modes with adjustable limits and speed. Besides standard attack and release parameters MSpectralDynamics provides peak/RMS settings and peak hold feature.
• Actual source level indication inside the shape graph - you always know, what dynamic value you can actually expect on the input and output, and what gain-reduction MSpectralDynamics performs.
• Adjustable up-sampling 1x-16x to minimize aliasing and get even more clear sound.
• 3 signal shaping modes, dry/wet control and other supportive parameters that ease your workflow with MSpectralDynamics.
• Global preset management - using a title button you can save your settings, which are shared on the computer, so you can easily access them in other songs.
• Full automation (except custom shapes).

Changes in v7.09:

• Time-resolution parameter & peak detection feature added to analyzers
• Now with global presets, FFT sizes extended to 262k and overlap converted powers of 2 and extended to 4096x
• Host synchronization feature now come with "Set xxx" button, which sets rate/frequency/size according to current sync value.
• Multiparameters in bank mode now contain editable list of values for each bank.
• Able to override the default units & grid in all envelope graph editors including snap-to-grid.
• EBU prefiltering is now optional in all LU meters.
• Modulation/multiparameter range parameters (for first 4 attached parameters) can now be learned the same way other parameters do.
• Lowered graph zooming ratio for easier control.
• Fixed clipboard access on Windows
• Cubase 7 latency reduced and improved compatibility
• Fix for Automation of some parameters generated in Logic.
• Fix for integral parameters when set by text via multiparameter.

Changes in v7.07:

• Improved threshold & equalizer curve handling, especially for de-noising.
• Now reports latency immediately when its changed
• Added a global plugin reset button, which restarts playback and updates latency.
• Enhanced and optimized oscillator shape modulation.
• Added AGC Set button, which sets output gain to make the output match input loudness for all plugins, where it is possible.
• Added harmonic generator for oscillators, number of harmonics increased to 256.
• Added "reset default editor size and style" feature.
• Plugins were lagging when saving.
• For 1in2out the plugins now perform mono->stereo conversion.
• Improved equalizer band points for better visibility.
• Added "tuplets" synchronization to all modulation effects & modulators.
• Improved MIDI reset for modulators.
• Added MIDI reset to modulation plugins.
• Added MIDI learn to multiparameters.
• BugFix: Improved pitch detection accuracy.
• BugFix: Fixed a few denormalization issues causing high CPU usage in some plugins.
• BugFix: Sometimes couldn't be activated after migration between systems or system malfunction.

Changes in v7.04:

• Enhanced GUI
• Adjust oscillator phase by dragging the graph or fine-tune using mouse-wheel.
• New Speed parameter to pitch detector.
• New virtual keyboard to all edits.
• New multiparameter reorder feature.
• Bugfix for activation failure bug
• Bugfix for file dialogs issue
• Bugfix for crash issue on 64-bit platforms in projects exceeding 4GB.
• Bugfix for Note controllers not working.
• Bugfix for Pitch-bend detection accuracy
• Bugfix for modulator/multiparameter learn parameters.

Changes in v7.01:

• Reorganized MIDI settings and added more note controllers.
• Modulate or automate Up to 4 parameter ranges of each modulator/multiparameter.
• Added global MIDI controller switch to prevent problems reset MIDI messages.
• Added "velocity" MIDI controller.
• Added transformation "Phase" to all oscillators.
• Several graph editors now support snap-to-grid.
• When modulator is disabled by automation or modulation, it may optionally restore original parameter values.
• AGC algorithm now prevents initial spikes when presets are changed in some plugins.
• Bugfix for Band input gains for bands 4-6 when using analog crossover.
• Added decay parameter to all analyzers

Changes in v7.00:

• MSpectralDynamics has new denoiser active preset.
• Smart randomization algorithm
• Added AGC (automatic gain control)
• Added lots of presets for most creative plugins.
• Ultra-advanced follower borrowed from MDynamics engine is now used in every modulator
• Oscillators can now load custom samples (WAV, MP3, FLAC)
• Ctrl+click on a "Presets" button loads a random preset.
• Added global modulator switch, presets and randomizer.
• Added band presets and band randomizer for multiband plugins.
• Added signal generator shape menu images, presets and randomizer.
• Switched to VST3 3.51.
• Added Hold parameter for the modulator follower mode.
• All momentary & short-term loudness meters now have maximum value indicator.
• Delay mode is now "classic" by default.
• BugFix: A few compatibility issues, upgraded to VST 3.51.
• BugFix: Analyzers didn't work correctly in left + right mode.

Changes in v6.01:

• Plugin settings storage optimized for lower size and higher speed.
• Multiple modulator & multiparameter windows can now be open at once.
• Added "OnOff" mode into MIDI note controllers and increased their number.
• Default modulation wheel for dry/wet is now disabled due to problems with some hosts e.g. Sonar X1.
• Automated Vocoder, Waveshaper, Dynamics, Freeform equalizer, Spectral dynamics,
• Automated Rhythmizer (first 4 sequences of each type), Granular (first 4 transformations) graphs.
• Added predefined directories and drives in all directory trees.
• Multiband peakmeters now occupy more space for better visibility.
• Added range to MIDI note controllers.
• LU meters in integrated mode now provide the gating algorithm according to the EBU standard.
• Added band expand for all multiband plugins.
• Loudness meters now highlight the -1..+1 LU target region.
• MModernCompressor - added another auto-compression button which doesn't change attack/release/rms.
• BugFix: A few plugins were crashing in knob mode.
• BugFix: Band editor collapse button is now visible only in edit mode, not in active presets screen.
• BugFix: Smoothness didn't update in MAutoDynamicEq unless analyzer/sonogram was enabled.
• BugFix: MIDI controller presets didn't load and update immediately.
• BugFix: Advanced convolution kernel settings may not have been working properly.
• BugFix: Mouse wheel didn't move much with high-resolution mouses.
• BugFix: Crossover bands moved to the left made them immovable.

Changes in v6.00beta:

• Interface and memory enhancements
• Knob based interfaces
• New "double" envelope shape type
• Analyzer & sonogram can now optionally be enabled even when the GUI is hidden
• A-H presets now send automation when changed.
• MIDI note controllers now react on pitch-bend immediately.
• Added second tape mode for flangers.
• Added feedback phase invert and saturation for phasers.
• Knob mode
• Can now capture the threshold curve based on the input signal.

MSpectralDynamics for OSX 3.02 changes

• Kernel highly optimized, especially for plugins with visualization.
• Added envelope editor snap-to-grid feature and advanced envelope editor menu.
• Added stairs & pulses envelope point mode.
• Plugins are now temporarily bypassed for time consuming actions such as loading presets.
• Now the plugins released in bundles can also accept single plugin licences for easier installation and activation.
• Fix: Occasional freezing under problematic hosts such as Wavelab.
• Fix: Mono/stereo encoding was sometimes failing in Logic.
• Fix: Copy&paste of modulators could result in a hang.
• Fix: Installer could hang on some multiprocessor systems.