Sonic black hole coupled with membrane-type acoustic metamaterial for broadband and low-frequency sound absorption

Key Points

• The sonic black hole design effectively achieves broad-spectrum sound absorption, with particular efficacy at low frequencies.
• Key findings indicate that sound absorption exceeds 90% in target frequencies, suggesting a strong performance in real-world applications.
• Analysis of sound absorption focused on the membrane-type acoustic metamaterial and its interaction with sonic black hole principles.
• Implications suggest the new method may enable innovative solutions for acoustic engineering and noise management.