SPECTRA 99 - High-Resolution Audio Spectrum Analyser
SPECTRA 99 is designed for modern high-definition audio workflows and is fully optimized for sample rates up to 96 kHz, delivering precise and stable spectral analysis in both standard and high-resolution sessions. The standalone application operates at 44.1 kHz and above, while the VST3 plugin follows the host DAW’s sample rate.
At its core is a 99-Band Balanced Log-Linear Musical Layout, providing a natural and intuitive view of your mix from deep sub-bass to the highest air frequencies.
"Download the free Standalone version to play with Spectra 99 and see if it fits your vibe. If you love the results, paying what you want for the VST3 edition unlocks DAW integration and export features, directly supporting this and future projects. Thank you for trying Spectra 99. Your support helps future updates."
Optional Cross-Promo Line for Balance 5
Want precise tonal control too? Check out Balance 5, my standalone 5-band parametric EQ designed for transparent, surgical adjustments and quick reference work.
Explore Balance 5 here: https://rockheyday.gumroad.com/l/balance5
New in Version 1.1 (January 2026)
Constantly improving Spectra 99. The latest update includes:
- Reduced CPU Load: Optimized graphics engine for smoother performance and lower resource usage.
- Enhanced Visuals: Level meters have been recalibrated for pixel-perfect alignment.
- Recommended for all users.
Key Features
• Engine: 99-Band Balanced Log-Linear Musical Layout
• Resolution: Adaptive 4096 / 8192-Point FFT
• Windowing: Ultra-Low Spectral Leakage Blackman Algorithm
• Tilt Modes: 0 dB, 3 dB, 4.5 dB Reference Slopes
• Ballistics: 100 ms, 250 ms, 500 ms Decay Modes
• Precision: 32-bit floating-point (Standalone), 64-bit double-precision (VST3)
• Metering: Dual-layer LR Peak meters (background = input, top ticks = output)
• Stereo Tool: Correlation meter for width & phase monitoring
• Safety: Output level control (Standalone), Post Gain trim control (VST3)
• Formats: Standalone Application & VST3 Plugin
• Sample Rates: 44.1–96 kHz (Standalone), Host-Dependent in VST3
Analyzer Response Speeds
• 100 ms — Sharp: For Metal/Techno/DnB. Jittery, precise, high-energy; reveals fast transients.
• 250 ms — Natural: For Rock/Pop/Jazz. Bouncy, musical; balanced everyday response.
• 500 ms — Soft: For Ambient/Lo-Fi/Classical. Smooth, relaxed; ideal for tails and textures.
Spectral Tilt Modes
• 0 dB — Raw: White = flat, Pink = falling; ideal for technical analysis.
• 3 dB — Standard: Pink = flat; industry-standard mixing reference.
• 4.5 dB — Modern: Lowers highs visually; favours brighter contemporary mixes
Adaptive Resolution Engine
SPECTRA 99 automatically scales its FFT resolution based on the current sample rate:
• 4096-point FFT at 44.1 / 48 kHz
• 8192-point FFT at 88.2 / 96 kHz
This guarantees consistent, razor-sharp low-end visualization at any resolution, ensuring deep bass accuracy without sacrificing real-time performance.