5 samples latency on STA321MPL?

[son1]

Posted on October 13, 2016 at 04:50

My SW read audio with PCM format from STA321MPL. The same time it read PDM format from Digital Microphone. Both are set with 16 Khz sample rate. It always has

5 samples delay in audio signal from STA321MPL compare to audio signal from digital Mic. All are set the same source clock. I have reviewed my code but could not find anywhere lead to this delay.

[Nickname1623_O]

Posted on October 18, 2016 at 04:28

hi Le_son,

the conversion from PDM to PCM is similar with AD conversion , and normally  group delay will be introduced in processing channel .

so it's normally behavior for audio processor .

Thanks

YT