Yes, significantly. The ISE is strongest for speech-band frequencies (500–4,000 Hz), which is why conversational speech is more disruptive than mechanical noise of equivalent measured volume. This is also why acoustic solutions that target the speech frequency range — as HIGHKA’s six-layer composite acoustic structure is patent-specifically tuned for 500 Hz–4 kHz — are more effective at eliminating the ISE than broadband absorption approaches that do not specifically attenuate the speech frequency range.