Does mic_array.get_direction (from mic_array.py) work?

Products & Technology ReSpeaker
4

Hi there,



The doa without keywords work well with respeaker 4 mic pi hat, i tested it just now. you can see the result from viewtopic.php?f=87&t=9314



The doa without keywords with respeaker 6 mic pi hat, please do below changes. but it is still not very stable.


  1. vad_doa.py：change the channels to 8



    RATE = 16000

    CHANNELS = 8

    VAD_FRAMES = 10 # ms

    DOA_FRAMES = 200 # ms


  2. mic_arrray.py: change the mic distance to 0.094 and MIC_GROUP = [[0, 3], [1, 4], [2, 5]]



    MIC_DISTANCE_6P1 = 0.094

    MAX_TDOA_6P1 = MIC_DISTANCE_6P1 / float(SOUND_SPEED)



    def get_direction(self, buf):

    best_guess = None

    if self.channels == 8:

    MIC_GROUP_N = 3

    MIC_GROUP = [[0, 3], [1, 4], [2, 5]]