Audio signal transmission refers to the process of sending sound information from one location to another. This can occur through various mediums, such as cables, wireless signals, or optical fibers. The audio signal is typically converted into an electrical signal, which can then be transmitted over these mediums to reach speakers or other audio devices. In wireless audio transmission, technologies like Bluetooth or Wi-Fi are commonly used. These methods allow for the transfer of audio signals without physical connections, making it convenient for devices like headphones and smart speakers. The quality of the transmission can be affected by factors such as distance and interference.