When it comes to the concept of "sound properties", most people think about volume, timbre, frequency, and other auditory characteristics that define a particular noise or tone. However, the opposite of sound properties can refer to silence, stillness, or inactivity in regards to any kind of sound wave or vibration. For instance, the absence of noise can be defined as silence, calmness, or quietness. Similarly, the opposite of frequency may refer to monotony, uniformity, or regularity. In short, the antonyms for sound properties signify the absence, opposite, or contrast to the various qualities of sound that we perceive in our daily lives.