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IDProjectCategoryView StatusDate SubmittedLast Update
0001305K18X001.00 SKB SWANSWpublic2021-07-23 18:542021-08-04 16:53
Reporter(SW) River WongAssigned To(ALTech) Wooshin Kang Due Date
PriorityurgentSeveritys2-severeReproducibilityalways
Status closedResolutionfixed 
Summary0001305: FFV MIC and Refernce time difference increasing issue
DescriptionHi Wooshin,

As SK reported the issue of MIC/Ref difference increasing by time in DVT3 and no such issue on DVT3 with latest July daily build image.
We did a test to verify this issue and the test result of detail information is in below.
As you can see, bypass A113X the issue is gone (the difference is always 152 samples). So, the MIC/Ref increasing difference is caused by A113X.
Please check if any performance issue in A113X software and consult with Amlogic to fix it.

PS. The DVT3 A113X image version is 0x0a.
Steps To ReproduceReproduce Steps:
1.Use the image in https://drive.google.com/file/d/1JuICeUROxiuDZjpjVYqcNM118HwgocC-/view?usp=sharing
This image removes the code which will open MIC/Ref audio device. So, with this image, we can use tinycap command to record MIC/Ref audio.

2.Use the following command when playing https://www.youtube.com/watch?v=TjAa0wOe5k4 on SWAN
tinycap /data/16bit8ch.wav -D 0 -d 0 -c 4 -r 48000 -b 32 -p 256 -n 8 -T 60

3.In PC, use tools "audacity" to analyze "16bit8ch.wav".
This wav file has 8 channels 16bits but file's header is only 4 channels 32bits. So, you have to use hex editor to modify the file header to correct data, than you can use Audacity to load the file. Please refer to wave_header_change_before_use_audacity.jpg

When using Audacity to load it, Ref audio is in channel 2/4 (channel 1/3 audio is invalid), MIC audio is in channel 5/6/7/8.
Additional InformationThe test results are as following:
[1]. I2S audio is from VS550->A113X->Wellang->Speaker: (No bypass A113X)
1.1 At 4 Seconds, MIC samples:227567, Ref samples:225489 (Refer to 4s_MIC_with_A113x.jpg,
4s_Ref_with_A113x.jpg)
The MIC/Ref difference=227567-225489=2078

1.2 At 30 Seconds, MIC samples:1475574, Ref samples:1473478 (Refer to 30s_MIC_with_A113x.jpg,
30s_Ref_with_A113x.jpg)
The MIC/Ref difference=1475574-1473478=2096

1.3 At 60 Seconds, MIC samples:2915605, Ref samples:2913489 (Refer to 60s_MIC_with_A113x.jpg,
60s_Ref_with_A113x.jpg)
The MIC/Ref difference=2915605-2913489=2116

[2]. I2S audio is from VS550->Wellang->Speaker: (Bypass A113X)
2.1 At 5 Seconds, MIC samples:250308, Ref samples:250156 (Refer to 5s_MIC_bypass_A113x.jpg,
5s_Ref_bypass_A113x.jpg)
The MIC/Ref difference=250308-250156=152

2.2 At 30 Seconds, MIC samples:1450308, Ref samples:1450156 (Refer to 30s_MIC_bypass_A113x.jpg,
30s_Ref_bypass_A113x.jpg)
The MIC/Ref difference=1450308-1450156=152

2.3 At 63 Seconds, MIC samples:3034308, Ref samples:3034156 (Refer to 63s_MIC_bypass_A113x.jpg,
63s_Ref_bypass_A113x.jpg)
The MIC/Ref difference=3034308-3034156=152
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User List (ALTech) Lonnie Kim , (ALTech) Sun Choul Joung , (ALTech) SY Yoon , (HW) Sean Chiang , (HW) Tom Lee , (RD) Fu-chiang Young , (SW) Brent Choi , (SW) Jacky Chiang

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(SW) River Wong

2021-07-23 18:54

developer  

4s_MIC_with_A113x.jpg (160,890 bytes)   
4s_MIC_with_A113x.jpg (160,890 bytes)   
4s_Ref_with_A113x.jpg (152,650 bytes)   
4s_Ref_with_A113x.jpg (152,650 bytes)   
30s_MIC_with_A113x.jpg (169,110 bytes)   
30s_MIC_with_A113x.jpg (169,110 bytes)   
30s_Ref_with_A113x.jpg (162,744 bytes)   
30s_Ref_with_A113x.jpg (162,744 bytes)   
60s_MIC_with_A113x.jpg (171,997 bytes)   
60s_MIC_with_A113x.jpg (171,997 bytes)   
60s_Ref_with_A113x.jpg (174,933 bytes)   
60s_Ref_with_A113x.jpg (174,933 bytes)   
5s_MIC_bypass_A113x.jpg (169,222 bytes)   
5s_MIC_bypass_A113x.jpg (169,222 bytes)   
5s_Ref_bypass_A113x.jpg (174,331 bytes)   
5s_Ref_bypass_A113x.jpg (174,331 bytes)   
30s_MIC_bypass_A113x.jpg (179,780 bytes)   
30s_MIC_bypass_A113x.jpg (179,780 bytes)   
30s_Ref_bypass_A113x.jpg (174,075 bytes)   
30s_Ref_bypass_A113x.jpg (174,075 bytes)   
63s_MIC_bypass_A113x.jpg (174,737 bytes)   
63s_MIC_bypass_A113x.jpg (174,737 bytes)   
63s_Ref_bypass_A113x.jpg (185,969 bytes)   
63s_Ref_bypass_A113x.jpg (185,969 bytes)   

(ALTech) Wooshin Kang

2021-08-04 16:52

developer   ~0007799

It is solved after synchronizing clock of in/out.
Thanks for your support.

Issue History

Date Modified Username Field Change
2021-07-23 18:54 (SW) River Wong New Issue
2021-07-23 18:54 (SW) River Wong Status new => assigned
2021-07-23 18:54 (SW) River Wong Assigned To => (ALTech) Wooshin Kang
2021-07-23 18:54 (SW) River Wong File Added: 4s_MIC_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 4s_Ref_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 30s_MIC_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 30s_Ref_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 60s_MIC_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 60s_Ref_with_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 5s_MIC_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 5s_Ref_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 30s_MIC_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 30s_Ref_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 63s_MIC_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: 63s_Ref_bypass_A113x.jpg
2021-07-23 18:54 (SW) River Wong File Added: wave_header_change_before_use_audacity.jpg
2021-07-23 18:56 (SW) River Wong Issue Monitored: (ALTech) SY Yoon
2021-07-23 18:56 (SW) River Wong Issue Monitored: (HW) Sean Chiang
2021-07-23 18:57 (SW) River Wong Issue Monitored: (SW) Jacky Chiang
2021-07-23 19:02 (SW) River Wong Issue Monitored: (HW) Tom Lee
2021-07-23 19:02 (SW) River Wong Issue Monitored: (RD) Fu-chiang Young
2021-07-23 19:02 (SW) River Wong Issue Monitored: (SW) Brent Choi
2021-07-23 19:03 (SW) River Wong Issue Monitored: (ALTech) Lonnie Kim
2021-07-23 19:09 (SW) River Wong Description Updated
2021-07-23 19:09 (SW) River Wong Steps to Reproduce Updated
2021-07-23 19:09 (SW) River Wong Additional Information Updated
2021-07-23 19:15 (SW) River Wong Description Updated
2021-07-23 19:30 (ALTech) Sun Choul Joung Issue Monitored: (ALTech) Sun Choul Joung
2021-08-04 16:52 (ALTech) Wooshin Kang Note Added: 0007799
2021-08-04 16:53 (ALTech) Wooshin Kang Status assigned => closed
2021-08-04 16:53 (ALTech) Wooshin Kang Resolution open => fixed