Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
To elaborate, PWM is a type of digital modulation that can be simply converted to analog by running through a low-pass filter (such as a speaker) thus giving a digital-to-analog conversion (DAC). DAC is a generic term and can apply to any type of digital-to-analog conversion. MP3 is a type of digital encoding, for example, that is converted to analog by a decoder/ DAC specifically designed for that purpose.