ERM: The Secret Behind the Revolution

ERM (Enhanced Reverb Modeling) is based on convolution, a technique that simulates acoustic spaces by applying impulse responses to a dry signal. The way these impulse responses are captured and processed is one key reason for ERM’s exceptional sound quality.

Traditional convolution reverbs often sound diffuse because early reflections are blended with the reverb tail. This effect is amplified when impulse responses are recorded further away from the sound source. On the other hand, measuring too close introduces another issue: the direct signal interferes with the early reflections, causing phase cancellations and comb filtering.

Through extensive experimentation, we developed a measurement technique that captures early reflections from a short distance while avoiding interferences with the direct signal. As a result, ERM delivers exceptionally clear and transparent early reflections, enhancing the perception of depth. This improvement is also evident in the lower frequencies, where the bass response becomes noticeably tighter and more defined.

Overall, ERM allows users to position themselves closer to the sound source while preserving the spatial impression.