audio(音频) 的使用

    详细 API 参考:audio API

    使用方法

    MaixAmigo, MaixCube 在使用音频前需要初始化 ES8374 音频解码芯片

    • 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()
    

    例程

    测试音频地址:6.wav