Bass sound refers to the low-pitched sound frequencies in the audio spectrum, typically between 20 Hz and 250 Hz. Bass sounds are characterized by their deep, rumbling, and resonant quality. They are an important component of many types of music, including rock, hip-hop, electronic, and dance music, and are produced by various musical instruments and audio equipment such as bass guitars, subwoofers, and synthesizers.

Bass sounds can have a powerful impact on listeners and are often used to create a sense of rhythm and drive in music. In addition, bass frequencies can be felt as much as they can be heard, making them an important component of the overall audio experience in live music performances, movie soundtracks, and other forms of audio production.