声线

Traditional form:

聲線

Pinyin (reading):

shēngxiàn

Definitions:

• voice (as sth that may be described as husky 沙啞／沙哑 (shāyǎ) or deep 低沉 (dīchén) etc)
• (physics) sound ray

Characters:

• 声 - sound, noise; voice, tone, music
• 线 - line, thread, wire; clue, trail

Traditional characters:

• 聲 - sound, noise; voice, tone, music
• 線 - line, thread, wire; clue, trail