Technology Breakthroughs

High Frequency Noise Cancelling with low computational requirements:

We pre-calculate the anti-noise transfer function based on the system properties to minimize runtime computational time and load, processing every noise sample as it is captured to enable close alignment of the anti-noise for high frequencies (likely into the GHz range).

Faster Signal Processing and Lower Computational Load in all FIR applications:

We achieve Linear Phase without the usual N/2 delay/latency typically encountered with FIR filters. As an additional benefit, we also cut the computational load in half.

Visual comparison of graph an Original set of Coefficients with the N/2 shifted version required to maintain Linear Phase. Effectively, the Original version would be symmetrical around the Y axis. The Linear Phase version is centered N/2 samples further to the right.

To provide the symmetry required for a linear phase response, the coefficient order is normally shifted by N/2 samples in traditional methods, as shown below. This results in the output being delayed by N/2 samples, which may make noise/anti-noise alignment impossible at high frequencies.

The Benefits:

Faster and Higher Resolution FIR Signal Processing – because speed and accuracy matters.

Radically Better Noise Cancelling – covering the full audio range and beyond.

The Noise Cancelling can be scaled to Performance Targets or Cost Constraints.

The near-zero latency provides effectiveness throughout the audio band and implies performance into the GHz range.