Audio Noise when speaking

Mobile SDK Android
#1

Description
Use Android SDK to Start or Join Meeting , someone say some words, then there is a noise at the begining of the word. (like a Flapping microphone，just some millisecond)
It can’t reproduce step by step.
Sure there are no noise in the meeting environment.
How can i fingure what happen here
how to fixed or some workaround here?

Which version?
Android SDK 4.6.21666.0429

#2

Hi @wpeng,

Thanks for the post. How often does this happen? Is this issue happening with Zoom Android client?

Thanks!

#3

Occasional，not often. And Zoom Android client do not have this issue.
Appreciate for any ideas

#4

Hi @wpeng,

Thanks for the reply. Is this issue reproducible with our demo app? Could you provide the device info of the device that has this issue?

Thanks!

#5

Add the sound file for reference:
http://106.12.160.43/kaka.m4a
http://106.12.160.43/popo.m4a
http://106.12.160.43/nosie.m4a

The device info: Android 5.1.1
Do you need some other device infomations?

Thank you

#6

Hi @wpeng,

Thanks for providing the audio. These audio noise often caused by unstable network connection. We are not able to reproduce this issue on our side. Please have a try with the latest version of SDK and see if this issue persists.

Thanks!

#7

Hi @wpeng,

A follow up question: Is this happening with headphones? Is this issue occurs when you are using a different headset? Could you provide the spec of the device you are having this issue with?

Thanks!

#8

Not used headphone.

Below is the hardware infomation:

Item Spec
Display Pixel 19201080
Size 5.5 inch
Touch Support 5 points Multi-Touch
CPU RK3288 41.8G
Memory Memory+Flash 2G+16G
Speaker Effective Frequency 30Hz～24000Hz
SNR ≥ 50 dB
Power Consumption 4 Ω 10W
MAX Volume 70±2 dB
LED Green • Solid Green: in call• Blinking Green: incoming call
Red Solid Red: microphone mute
Interface USB • USB 2.0• Support USB camera/USB mass storage• Two type-A interfaces and one type-D
WiFi • Support 802.11a/b/g/n• Two wireless network cards build in
HDMI • HDMI 2.0• 1 port
Ethernet RJ45 10M/100M/1000M
Power 12V , 2A
MIC（3 OMNI Digital MIC） Frequency response 20Hz-16000 Hz
SNR ≥ 64dB
Pick up distance At 4m position，Speech pickup difference 1m vs 4m≤0.25 dB(skype for business test standard)
Shortcut Key Mute/Vol -/Vol + Touch button
Key Functional Supporting Automatic Echo Cancellation AEC
Supporting Automatic Gain Control AGC
OS Above Android 5 Support OTA update
• User can’t install extra software
Accessory USB controller cable • Length: 3m• USB Type-A and Type-D
HDMI Cable • Length:3m

#9

Hi @wpeng,

Thanks for the detailed info. The hardware spec should work fine with our Zoom SDK. Wondering if the audio issue is caused by the network. I have forwarded this to the engineering team for further investigation.

Thanks!