2025-04-20 6:53 PM - last edited on 2025-04-21 1:52 AM by mƎALLEm
Hello,
I am implementing audio streaming with H753 board.
My goal is like below.
1. Input : USB connected PC,
which can be selected one of 48kHz and 44.1kHz sample rate on connecting state.
Others are fixed as 16 bit / 2 slot ( stereo )
2. Output : 32 bit Stereo SAI(I2S). Sample rate is same to input.
3. What I have succeed :
Default streaming : Good Sound : [48kHz/16bit/Stereo USB] to [48 kHz/32bit/Stereo SAI].
SAI output frequency of FS / SCK : Both 44.1kHz and 48kHz case.
4. Problems:
The testing sound is always low tone after changed sample rate.
both [48k->44.1k, Test] and [44.1k->48k, Test] are same.
Could I get some help?
Thank you.
From Skson.
2025-05-12 3:58 AM
Hi @skson
Do you reproduce using a reference board? Can you configure your system to perform a loopback test where the audio data received via USB is sent back to the host PC without processing through the SAI to narrow down the issue?
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