洪亮 (hóng liàng) is an adjective describing a voice that is both loud and clear—rich in volume, resonant, and easy to hear without distortion. The first character 洪 means 'flood' or 'vast', evoking power and fullness; the second character 亮 means 'bright' or 'clear', suggesting clarity and sharpness. Together, they form a vivid compound emphasizing vocal strength and intelligibility—not just noisy, but sonorously articulate.

This word is commonly used to describe human voices in formal or expressive contexts: public speakers, teachers, singers, or elders giving instructions. It carries a positive, respectful connotation—suggesting confidence, health, and authority. You won’t use it for machines (e.g., alarms or speakers); for those, terms like 响亮 (xiǎng liàng) or 清晰 (qīng xī) are more appropriate. 洪亮 is also occasionally used metaphorically for sounds perceived as noble or stirring, such as temple bells—but always with a sense of resonance and dignity.