• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 42 subscribers
  • Views 1807 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC3200 LaunchPad bi-directional audio streaming latency?

Tim Chao Li
Expert 4415 points
Other Parts Discussed in Thread: CC3200

Hi all,

What is the latency on the CC3200 launchpad and audio booster pack (CC3200-LAUNCHXL + CC3200AUDBOOST) when used to stream wireless audio? I am looking specifically at the demo here: http://processors.wiki.ti.com/index.php/CC32xx_Wifi_Audio_Application

What factors would affect this latency if it is variable (and are strategies available to mitigate it)?

The audio stream does not have to be particularly high quality- it is unidirectional, mono, and could be half the bit-rate of CD quality (44.1kHz) if that improves latency, which is the priority. Ideally, we would like to get it to 2ms, though 4 would be ok. If it is not possible on this platform, are there any suggestions for one that could handle wireless streaming with those latency figures?

  • 0
    TI__Expert 7215 points

    Hi Tim,

    Network latency of 2-4msec should be possible given audio is unidirectional, mono at low bit rate.

    We also need to measure the Audio latency. I understand that you are looking for real time streaming with no buffering.

    We will get back with more precise data on audio latency with above requirement of audio quality

  • 0 in reply to Kaushal Kukkar
    TI__Expert 4415 points

    It's definitely going to be unidirectional and mono. Not sure about the exact bitrate but I will try to provide an update. Is it possible to test for the best possible bitrate that provides 2-4ms of latency? (If not I will try to get back to you with a minimum bitrate figure). And yes it will be for a real time audio streaming application.

    Thanks!

  • 0 in reply to Tim Chao Li
    TI__Expert 4415 points

    Actually I just got some numbers- higher is better but 22kHz and 48kbps is the baseline we are working with. If the latency is over 2-4ms at that bitrate, could you find the bitrate ceiling that achieves that/suggest another solution that might work?

    Thanks, your help is much appreciated.