audio(音频) 的使用

详细 API 参考:audio API

1. 使用方法

  • 创建 audio 对象
import audio

player = audio.Audio(path = "/sd/6.wav")
  • 创建 I2S 对象(用于处理音频对象)
from Maix import I2S

# init i2s(i2s0)
wav_dev = I2S(I2S.DEVICE_0)
# config i2s according to audio info
wav_dev.channel_config(wav_dev.CHANNEL_1, I2S.TRANSMITTER,resolution = I2S.RESOLUTION_16_BIT ,cycles = I2S.SCLK_CYCLES_32, align_mode = I2S.RIGHT_JUSTIFYING_MODE)
  • 获取 audio 对象信息并关联 I2S 对象
# read audio info
wav_info = player.play_process(wav_dev)
print("wav file head information: ", wav_info)
  • 根据 audio 信息配置 I2S 对象
sample_rate = wav_info[1]
wav_dev.set_sample_rate(sample_rate)
  • 使用已关联的 I2S 对象播放音频
# loop to play audio
while True:
    ret = player.play()
    if ret == None:
        print("format error")
        break
    elif ret==0:
        print("end")
        break
  • 结束播放
player.finish()

2. 例程

测试音频地址:6.wav

powered by GitbookFile Modify: 2021-02-03 10:26:57

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