学术类雅思 (5分及以下) - 声音

producing a sound or noise with high volume

大声

having a low volume

圆润（声音）

describing a sound that is very high in frequency or tone, often producing a sharp or piercing quality

高音调（声音）

having a soft and quiet sound

低音调

producing or having a lot of loud and unwanted sound

嘈杂

with little or no noise

安静的

having or making little or no sound

无声

speaking quietly and unclearly, making it hard for others to understand

非常不清楚（言语）

making a soft and low sound

非常不清楚（言语）

having a loud and clear sound

响亮而清晰

having a loud and sharp sound

大声

having a soft sound or voice

软（声音）

having a quiet and calm atmosphere, often accompanied by quiet voices or sounds

软化（声音）