In general, wireless Bluetooth speakers generate sound in the same way as any other loudspeaker. The only difference is that a Bluetooth speaker contains a Bluetooth receiver, which receives audio data from your wireless device via radio waves. This data is processed by a digital signal processor, or DSP, which controls the frequency and volume of the sound that gets put out. For more information on Bluetooth speakers, including how different Bluetooth profiles affect the sound of your audio device, check out our guide here!