BTE Audio PEQ5 Parallel Parametric EQ: Finally! Delay-Free Feedback Loops In The Digital Domain!
They eat, sleep and dream equalizer algorithms at BTE Audio where news is, the PEQ5 Parallel Parametric EQ algorithm is done. Though parametric EQ is more conventionally built with filter bands in series-cascade, the parallel architecture used in the most primitive units offered a distinct musicality that stemmed from smooth interaction between neighboring bands and unique phase behavior.
Filter bands placed in the feedback paths during attenuation work towards a result of symmetrical boost and attenuation curves, which is somewhat of a daunting process to implement in the digital domain. In fact, the delay-free feedback loops that result are deemed uncomputable according to classical digital signal processing theory.
That's where the PEQ5 algorithm comes in. It can realistically replicate delay-free feedback loops for very accurate representations of parallel parametric EQ.
Fast Features:
- Extremely High Processing Efficiency
- Supports sampling frequencies up to 384 kHz
- Clickless parameter update
- Proprietary topology which is optimized for low latency, low noise and high dynamic range
- Supports both 32 bit (single precision) and 64 bit (double precision) floating-point processing
- Built-in reference-quality upsampling algorithm which is automatically enabled at sampling frequencies below 88.2 kHz
- Clearly and concisely implemented in pure C++: portable to any platform that is supported by a C++ compiler





Post new comment