Mastering LPEQ: Linear-Phase Equalization for Professional Mastering
In the world of professional audio, especially in the final stage of mastering, where every nuance matters, choosing the right tools is critically important. Equalization at this stage requires not only precision, but also absolute transparency to avoid introducing unwanted artifacts or phase distortions. It is to meet these highest standards that Mastering LPEQ was developed – a unique linear-phase equalizer, which is the result of fruitful cooperation between Quantum-Music and the Faculty of Electrical Engineering of the École Polytechnique de Montréal.
The main philosophy of Mastering LPEQ is to use advanced scientific developments in the field of digital signal processing to create the most transparent tool possible. Unlike most standard equalizers, the linear-phase architecture of LPEQ ensures that all frequency components of the signal are delayed equally. This means that the waveform of the signal does not change, and the temporal relationships between different frequencies remain completely intact. This characteristic is invaluable during mastering, where preserving the integrity of the mix is a priority.
Key Features and Functionality
Mastering LPEQ is equipped with a full set of features designed to provide maximum flexibility and control in the mastering process:
- Wide range of compatibility: Support for sampling rates of 44.1, 48, 88.2, 96 kHz and audio resolution from 16 to 32 bits.
- Full spectrum equalization: Corrections in the frequency range from 20 Hz to 20 kHz.
- Flexible operating modes: Standard stereo processing (Left/Right) and Mid/Side mode for independent processing of mono and stereo parts of the mix.
- Precise monitoring: Peak detection and level measurement with VU and peak indicators.
- Detailed gain control: 8 independent mono bands or 4 stereo bands, each with a gain/attenuation range of up to ±6 dB.
- Non-switchable filters: Fixed Low-Cut filters at 30 Hz and High-Cut at 18 kHz for signal purity.
- Band isolation function (Solo): Separate Solo buttons for each equalization band.
- Gain regulator system: Separate Gain regulators for each band and a general Input Gain regulator.
- Innovative regulators: Unique Bandwidth and Precision regulators for advanced control over the shape of the equalization curve and accuracy.
- True linear-phase processing: The key advantage that ensures maximum transparency and no phase distortion.
Application of Mastering LPEQ
Using Mastering LPEQ allows engineers to work with audio material with unparalleled precision and transparency. Its linear-phase nature makes it ideal for delicate tonal balancing and corrections that should not affect the phase integrity of the mix. The Mid/Side mode is a powerful tool for independently shaping the center image and stereo space, which is often a key element of professional mastering. Innovative Bandwidth and Precision regulators provide a level of control that goes beyond standard equalizers, allowing you to very precisely “sculpt” the desired sound.
This plugin is a testament to how scientific research can be effectively applied to solve practical problems in audio engineering. It will be a valuable addition to the arsenal of any mastering engineer who strives to achieve the highest quality sound while preserving the naturalness and dynamics of the original recording.
By choosing Mastering LPEQ from Quantum-Music, you are choosing transparency, accuracy, and a scientifically sound approach to equalization in the final stage of working on your music.
