KVR Audio

Nug Wrangler · Post by **Nug Wrangler** » Fri Aug 01, 2025 4:07 pm

Thanks

george · Post by **george** » Tue Aug 05, 2025 4:01 pm

We are releasing Discovery Pro 8.8.1 to address critical memory management issues that were exposed following our dynamic interpolation engine improvements in version 8.8.0.

Critical Fixes:

Resolved aligned memory management vulnerabilities in oscillator engine.
Implemented proper custom deleters for platform-specific aligned memory allocations.
Eliminated memory deallocation mismatches between Windows and POSIX-compliant systems.
Addressed potential double-free scenarios and memory leak conditions.

This update fixes a fundamental memory management issue where wave oscillator data was being allocated using platform-specific aligned memory functions (_aligned_malloc on Windows, aligned_alloc on other systems) but was being freed using the standard C++ delete[] operator. This mismatch could cause memory corruption.

We've now implemented proper custom cleanup handlers that ensure memory is freed using the correct corresponding function (_aligned_free or free) for each platform, eliminating the allocation/deallocation mismatch that was causing system instability.

We strongly recommend all users update to version 8.8.1 as this is a critical stability update.

https://www.discodsp.com/discoverypro/

george · Post by **george** » Wed Aug 06, 2025 11:16 am

Version 8.8.2 delivers significant performance improvements through optimized dynamic interpolation algorithms, enhancing the VA oscillator engine's efficiency.

Dynamic Interpolation Optimizations

Streamlined dynamic interpolation system for improved CPU performance
Enhanced FMA (Fused Multiply-Add) optimizations across all waveform types
Optimized memory alignment and cache utilization for better real-time performance
Refined band-limited wavetable processing for consistent high-quality output

Performance Improvements

Reduced CPU overhead in oscillator processing
Enhanced voice allocation efficiency for better polyphony handling
Improved real-time audio thread performance across all supported platforms

https://www.discodsp.com/discoverypro/

george · Post by **george** » Sat Aug 09, 2025 6:52 am

Version 8.8.3 delivers comprehensive DSP optimizations, enhanced MIDI automation capabilities, and improved PadSynth workflow integration for a more refined and professional music production experience.

DSP Performance Optimizations

Improved performance in filters, oscillators waveform generation, and Discrete Fourier Transform processing

Enhanced MIDI Automation

Added Master Volume parameter automation with MIDI CC 12 support
Fixed ModEnv Amount knob automation with proper parameter indexing
Enhanced MIDI XML template formatting with improved readability and alphabetical sorting

PadSynth Workflow Integration

Added PadSynth Mode and Eco Mode options directly to Wave edit dropdown menu for easier access

https://www.discodsp.com/discoverypro/

george · Post by **george** » Tue Aug 12, 2025 7:36 am

Version 8.8.4 delivers targeted performance optimizations focused on filter precision, oscillator efficiency, and GUI responsiveness during intensive production workflows.

Enhanced Filter Precision

Implemented fused multiply-add operations in Moog ladder filter calculations to reduce cumulative rounding errors
Maintains identical sonic character while improving numerical accuracy in filter state updates

Optimized Pulse Width Modulation

Eliminated redundant wavetable level calculations in PWM processing
Reduced CPU overhead during pulse width sweeps and modulation-heavy patches

Adaptive GUI Performance

Implemented variable refresh rates: 25Hz during active control manipulation, 10Hz during idle periods
Added throttled repaint system for gate sequencer to prevent UI lag during pattern editing
Introduced parameter update throttling during automation to reduce system load
Optimized image loading with asynchronous caching to improve startup times

These optimizations provide measurable performance improvements in CPU usage and interface responsiveness, particularly beneficial for complex patches with extensive modulation and automation.

This update is free for existing 8.x customers and available now in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux. Visit our Discovery Pro product page for download information and complete documentation.

https://www.discodsp.com/discoverypro/

george · Post by **george** » Wed Aug 13, 2025 9:29 am

Version Discovery Pro 8.8.5 features enhanced rhythmic and harmonic pattern generation algorithms for Gate and Modulation sequencers.

Enhanced Modulation and Gate Randomizer Algorithms

Implemented advanced Markov Chain-based rhythmic pattern generation with House, Jazz, and Techno style matrices
Added intelligent harmonic modulation generator with seven music theory-based algorithms for OSC2 detune
Created structured bassline patterns using classic chord progressions and scale-based melodic sequences
Enhanced traditional oscillating waveforms with subtle musical randomization for organic variation

Improved User Interface and Menu System

Added Randomize option to Gate and Modulation preset dropdown menus for quick access to new algorithms
Enhanced preset menu selection handling to prevent crashes when invalid selections are made
Fixed PadSynth menu selection issues in EDIT dropdown preventing proper mode switching

This update introduces sophisticated musical intelligence to Discovery Pro's sequencers, generating more authentic rhythmic and harmonic patterns based on established music theory principles rather than purely random sequences.

This update is free for existing 8.x customers and available now in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux.

https://www.discodsp.com/discoverypro/

Nug Wrangler · Post by **Nug Wrangler** » Wed Aug 13, 2025 10:25 am

Thank you!

george · Post by **george** » Sat Aug 16, 2025 6:41 am

Version 8.8.6 is a maintenance and optimization update focused on improving performance, stability, and code quality. Key improvements include a much faster and more memory-efficient GUI, several bug fixes, and extensive modernization to ensure future compatibility.

GUI Performance and Asset Management

Optimized Asset Loading: The GUI now intelligently loads only the assets required for the current scale factor at startup, significantly reducing startup time and memory usage
Asynchronous Loading: Non-essential GUI assets are now loaded in a background thread after the plugin is open, preventing CPU spikes during initialization
Smarter Caching: The ImageCache is now managed more efficiently. The cache is cleared when the scale factor changes, and the cache timeout has been reduced from 5 seconds to 1 second to free up memory from unused assets more quickly

Synth Engine and DSP Fixes

Enhanced Legato Parameter Handling: Fixed a critical logic bug in voice parameter passing to ensure correct legato/re-triggering behavior across all layers
Improved SFZ Instrument Management: Enhanced memory management when switching between SFZ instruments, ensuring proper cleanup when selecting "---" (none) option in the wave/bank menus
Enhanced SFZ Parsing: Improved note name parsing support for lokey and hikey parameters, now accepting both MIDI note numbers and standard note names (e.g., C4, F#3)
Wave Interpolation Engine Refinements: Streamlined SIMD-optimized resampling algorithms with better memory alignment and platform-specific optimizations for both x86 and ARM architectures

Code Modernization

Enhanced Code Quality: Comprehensive improvements across the entire codebase for increased robustness and reliability
Modern C++ Standards: Updated to use contemporary C++ practices including proper type safety and explicit type conversions
Streamlined Architecture: Refined internal method naming conventions to eliminate potential conflicts and improve maintainability
Optimized Build Process: Removed code paths and streamlined compilation for Intel and Apple Silicon architectures
Framework Compatibility: Enhanced compatibility through modern API implementations
Performance Optimizations: Eliminated redundant code and variables to improve overall efficiency

This update is free for existing 8.x customers and available now in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux. Visit our Discovery Pro product page for download information and complete documentation.

https://www.discodsp.com/discoverypro/

george · Post by **george** » Thu Aug 21, 2025 8:45 am

Version 8.8.7 delivers a major optimization update that significantly reduces plugin size by up to 75% through externalized skin assets, while incorporating critical MTS-ESP and Audio Unit validation fixes.

Plugin Size Optimization

Externalized all default skin assets from binary resources, reducing total plugin size
Updated skin loading system to use external Skins/Default folder instead of embedded resources for improved modularity
Implemented robust fallback system for missing skin assets: renders black placeholder images when assets not found
Added native OS warning dialog that appears on first missing asset, allowing continued plugin operation even with incomplete skin files

MTS-ESP Thread Safety & Validation

Added comprehensive mutex protection (std::mutex mtsClientMutex) for shared MTS client access across multiple voice instances
Implemented thread-safe voice constructor and destructor operations to prevent race conditions during simultaneous voice creation and destruction
Enhanced memory safety with proper mutex locks protecting MTS client registration and deregistration
Added robust null pointer checking for mtsClient to prevent crashes when MTS master is unavailable
Implemented MTS master connection validation before querying tuning data
Added support for note filtering via MTS_ShouldFilterNote() - filtered notes return 0.0f (mute) for proper keyboard mapping support
Enhanced frequency range validation (0-20kHz) to prevent invalid tuning data from causing audio artifacts
Implemented ratio bounds clamping (0.25x - 4.0x) to prevent extreme pitch deviations that could damage speakers or hearing
Added comprehensive debug logging with scale name display for easier troubleshooting

Audio Unit Validation Improvements

Removed auval-specific detection logic that was causing validation conflicts in Logic Pro and other AU hosts
Eliminated selective MIDI processing disabling during validation that could cause hanging notes or incomplete initialization
Enhanced validation block frame handling to prevent hangs during Audio Unit validation procedures
Improved MIDI output message handling consistency across all host environments

This update is free for existing 8.x customers and available now in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux. Visit our Discovery Pro product page for download information and complete documentation.

https://www.discodsp.com/discoverypro/

george · Post by **george** » Sun Aug 24, 2025 8:43 am

Discovery Pro 8.8.9 refines voice management with an improved voice stealing algorithm and enhanced voice tracking capabilities for more stable polyphonic performance.

Revised Voice Stealing Algorithm

New voice stealing priority calculation using backwards pitch distance for more musical voice allocation
Used voice Release() method instead of manual envelope clearing for cleaner voice transitions
Replaced exact float equality with tolerance-based comparison for more reliable voice state detection
Resolved specific note tracking issues that could cause voice allocation problems during complex polyphonic passages

This update is free for existing 8.x customers and available now in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux.

https://www.discodsp.com/discoverypro/

george · Post by **george** » Wed Oct 01, 2025 5:12 am

Discovery Pro 8.9 is now available, adding percussion programming capabilities, improved PADsynth processing, and SFZ import enhancements.

New Features

Percussion Mode

Adds drum programming functionality with 10 drum kits in a new Percussion bank
Keyboard mapping: white keys (C2-B5) trigger percussion sounds, black keys select zones for editing
Automatic zone detection allows each percussion element to maintain independent settings
Integrates with existing Disk Mode for sample management

PADsynth Processing Updates

Non-blocking processing - interface remains responsive during synthesis
LCD displays "Rendering..." status during PADsynth generation
SIMD optimizations using AVX2, FMA, and NEON instruction sets on supported processors
Eliminates UI freezing during PAD button operations

SFZ Import Improvements

Support for multi-bit depth WAV files
Parallel wave file loading reduces import times for large libraries
Improved compatibility with professional SFZ sample libraries

Performance and DSP

Optimized distortion, chorus, phaser, and PADsynth algorithms with FMA instruction support
Revised voice stealing algorithm for improved polyphonic performance
Reduced CPU usage when effects are disabled
Added frontwall limiter at -0.1 dB to prevent clipping
Fixed Moog filter resonance drift with oversampling

Interface Changes

Reorganized Edit menu with new Layer and Program submenus
Enhanced program randomization with direct preset folder access
Improved copy/paste system for effects management
Renamed Moog filters to Ladder filters with updated descriptions

MIDI Features

Added aftertouch and velocity curve modes
Help menu now shows MIDI CC values from XML templates
Improved MIDI CC template system
MIDI CC templates moved to Config folder

Platform Updates

Consolidated AAX with fixed MIDI output
Updated macOS SDK to 10.15
Fixed Windows compiler issues with aligned memory allocation
Improved licensing system with dynamic checking
Linux activation fixes with cURL support

Discovery Pro 8.9 is available as a free update for existing 8.x users in AAX, AU, VST2, VST3, and standalone formats for Windows, macOS, and Linux.

https://www.discodsp.com/discoverypro/

dayjob · Post by **dayjob** » Wed Oct 01, 2025 5:34 am

Drum mode is a nice surprise.🫠

Nug Wrangler · Post by **Nug Wrangler** » Wed Oct 01, 2025 4:36 pm

Great update

george · Post by **george** » Fri Oct 03, 2025 1:03 pm

Discovery Pro 8.9.1 is now available.

This update fixes critical parameter management issues in standalone mode, resolves pitch bend functionality, introducing new tube distortion and analog drift features that adds authentic vintage synthesizer character with three intensity modes.

https://www.discodsp.com/discoverypro/

audiojunkie · Post by **audiojunkie** » Sat Oct 04, 2025 1:49 pm

Linux activation fixes with cURL support

Wait… I thought you said that the Linux version wouldn’t have copy protection?!

discoDSP Discovery Pro 8.15 released