Arduino audio player

1. Can an Arduino play sound?
2. Can Arduino play WAV without SD card?

Can an Arduino play sound?

The Arduino in the circuit shown below loads the . wav files from the micro-SD card. It then generates a signal and outputs it through the speaker connected to digital pin 9. This allows the speaker to create sounds and play music.

Can Arduino play WAV without SD card?

wav files on an Arduino Uno, you'll need a SD card module because the Arduino cannot play sounds that are longer than 4s. However, if you want to play around with shorter sounds, you can upload them onto your Arduino without having to buy an SD card shield.