i2s transmission voice interval is noisy

RE: i2s transmission voice interval is noisy

Susheel Nuguru — Mon, 09 Dec 2019 11:20:16 GMT

HKjace, Thanks for coming back to reply with the explanation

RE: i2s transmission voice interval is noisy

HKjace — Mon, 09 Dec 2019 11:18:23 GMT

Thank you for your answer. I didn't understand it well before. I'm sorry.Now I have found the reason after many attempts: the uint32_t const pointer type used in routine transmission, and the uint8_t const pointer type used by me, the length transmission should be divided by 4, the length transmission was wrong before, three times more transmission resulted in noise, now it has been solved,thank you all the same.

RE: i2s transmission voice interval is noisy

Susheel Nuguru — Mon, 09 Dec 2019 10:47:44 GMT

HKjace,

I am not an expert in I2S sound systems. But the information you gave is definitely does not seem enough for other forum members here in devzone to analyze the problem. Can you please be more descriptive on

Which example/SDK/softdevice/hardware you are testing this.
What exactly are you trying to do (code snippets would be very helpful)
some logs or sniffed data would enhance the ability for users to diagnose the issue faster.

RE: i2s transmission voice interval is noisy

HKjace — Sat, 07 Dec 2019 08:01:39 GMT

Even directly preparing the next buf during an interrupt can be noisy