Using USB Audio

Description
We are developing an android box with USB audio (mic & speaker). The USB audio device is similar as a smart speaker with 4 mics. Zoom App can not access the USB mic and speaker. However, we tested another 3rd party video call App and system audio recording App. They all work fine. What’s the requirement of using USB audio?

Which version?
4.5.5699.1027 on Google Play

Smartphone (please complete the following information):

  • Device: Android Box
  • OS: Android
  • Version: 7.1

Dear sir,

We got the following repeat error;

01-02 08:38:31.898 355 5531 D AudioHardwareTiny: in->Device : 0x4
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: in->SampleRate : 44100
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: in->Channels : 2
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: in->Formate : 0
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: in->PreiodSize : 1024
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: read_in_sound_card: buf = 0 [spkuac10 ]: usb-audio - xmos vocalfusion spk (uac1.0)
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: read_in_sound_card: buf = xmos xmos vocalfusion spk (uac1.0) at usb-fe3c0000.usb-1.1, full speed
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: read_in_sound_card: buf = 1 [uac1gadget ]: uac1_gadget - uac1_gadget
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: read_in_sound_card: buf = uac1_gadget 0
01-02 08:38:31.898 355 5531 D AudioHardwareTiny: getInputRouteFromDevice:device:80000004
01-02 08:38:31.899 355 5531 E AudioHardwareTiny: start_input_stream: the number of mic is invalid,please check

Hi mtch168,

Thanks for the post and the log. It looks like the audio device is not recognized. Does the Zoom app have the proper permission granted to access the audio device? Please double-check the permissions and see if it helps.

As this forum is for the Zoom SDKs and it seems like you are referring to the Zoom Client on the Google Play Store. For the issues regarding the Zoom client, you may reach out to the support here: https://support.zoom.us/hc/en-us and one of our experts would be able to help you.

Thanks!