MP3Decoder – Load a mp3 file for audio playback¶
An object that decodes MP3 files for playback on an audio device.
Playing a mp3 file from flash:
import board import audiomp3 import audioio import digitalio # Required for CircuitPlayground Express speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE) speaker_enable.switch_to_output(value=True) data = open("cplay-16bit-16khz-64kbps.mp3", "rb") mp3 = audiomp3.MP3Decoder(data) a = audioio.AudioOut(board.A0) print("playing") a.play(mp3) while a.playing: pass print("stopped")
Deinitialises the MP3 and releases all memory resources for reuse.
No-op used by Context Managers.
Automatically deinitializes the hardware when exiting a context. See Lifetime and ContextManagers for more info.
File to play back.
32 bit value that dictates how quickly samples are loaded into the DAC in Hertz (cycles per second). When the sample is looped, this can change the pitch output without changing the underlying sample.
Bits per sample. (read only)
Number of audio channels. (read only)
The RMS audio level of a recently played moment of audio. (read only)