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IDProjectCategoryView StatusLast Update
0001780K18X001.00 SKB SWANSWpublic2024-09-03 15:12
Reporter(ALTech) Sangmin Choi Assigned To(ALTech) Sangmin Choi Due Date
PrioritynormalSeveritys4-minorReproducibilitysometimes
Status closedResolutionfixed 
Summary0001780: There is audio jitter through earphone on BA01 RCU.
DescriptionThere is audio jitter through earphone on BA01 RCU.
This issue was encountered under BMT.
https://jira.skbroadband.com/browse/BPM-21117

There are suspicious log messages and it's printed repeatedly.

07-27 14:32:00.663 6467 7681 W bt_btif_a2dp_source btif_a2dp_source_enqueue_callback: TX queue buffer size now=22 adding=7 max=28
07-27 14:32:00.666 6467 6520 W bt_btif_a2dp_source btm_read_rssi_cb: device: 00:13:7b:76:88:de, rssi: -47
07-27 14:32:00.668 6467 6520 W bt_btif_a2dp_source btm_read_failed_contact_counter_cb: device: 00:13:7b:76:88:de, Failed Contact Counter: 0
07-27 14:32:00.669 6467 6520 W bt_btif_a2dp_source btm_read_automatic_flush_timeout_cb: device: 00:13:7b:76:88:de, Automatic Flush Timeout: 0
07-27 14:32:00.671 6467 6520 W bt_btif_a2dp_source btm_read_tx_power_cb: device: 00:13:7b:76:88:de, Tx Power: 0

Could you please check it?

Thank you.
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Users monitoring this issue

User List (SW) Jason Ling , (SW) Sam Yang

Activities

(ALTech) Sangmin Choi

2023-08-01 16:23

developer  

logcat.log (12,196,399 bytes)

(ALTech) Sangmin Choi

2023-08-01 16:24

developer   ~0013790

Hello, Jacky,

Could you please assign an engineer for this issue?

Thank you.
Sangmin Choi.

(SW) Sam Yang

2023-08-11 15:19

developer   ~0013873

Hi Sangmin,

I want to check the issue with you:
I connect a BA01 RCU. And play a MV in Youtube. Then plug in a2dp earphone on RCU.
After about 5 seconds, There is a dialog as below "image.png", and the sound output to earphone.
Could you describe the issue situation you meet? And the steps for reproducing.

Thanks~
Sam
image.png (675,789 bytes)

(SW) Sam Yang

2023-08-14 14:32

developer   ~0013878

Last edited: 2023-08-14 16:31

Hi Sangmin,

I tried live TV stream. But I don't find any audio jitter. And I translate the SKB JIRA BPM-21117 to English.
It shows that the actual issue result is: sound cut off and transmitted.
Could you tell me your test situation, steps for reproducing, and RCU version?
I can't confirm if the RCU version will affect.

My BA01 RCU version:
BFX-UA300:/ # getprop |grep "rcu"
[sys.skb.btsvc.rcu.count]: [1]
[sys.skb.btsvc.rcu.fw_ver]: [BL 193]
[sys.skb.btsvc.rcu.hw_ver]: [01]
[sys.skb.btsvc.rcu.model]: [UEI BLE RCU]
[sys.skb.btsvc.rcu.name]: [BRM_BA01_A6B]
[sys.skb.btsvc.rcu.sw_ver]: [7049.01.10]

Thanks~
Sam

(ALTech) Sangmin Choi

2023-08-16 08:21

developer   ~0013884

Hello, Sam,

Please check the following information.
BFX-UA300:/ $ getprop | grep "rcu"
[sys.skb.btsvc.rcu.battery]: [70]
[sys.skb.btsvc.rcu.count]: [1]
[sys.skb.btsvc.rcu.fw_ver]: [BL 193]
[sys.skb.btsvc.rcu.hw_ver]: [01]
[sys.skb.btsvc.rcu.mac]: [00:13:7B:3B:5E:6C]
[sys.skb.btsvc.rcu.manu]: [movon]
[sys.skb.btsvc.rcu.model]: [UEI BLE RCU]
[sys.skb.btsvc.rcu.name]: [BMM_BA01_E6C]
[sys.skb.btsvc.rcu.serial]: []
[sys.skb.btsvc.rcu.status]: [connect]
[sys.skb.btsvc.rcu.sw_ver]: [7050.02.00]
[sys.skb.btsvc.rcu.time]: [2023-08-16 09:12]
[sys.skb.isqms.btsvc.rcu.address]: [00:13:7B:3B:5E:6C]
[sys.skb.isqms.btsvc.rcu.connect]: [1]
[sys.skb.isqms.btsvc.rcu.paired]: [1]

And, how many did you test?
I am sorry I didn't mention about the reproduce ratio.
But it's reproduced about 5~10%.

Test step is as follows.

Scenario #1
1. Connect the earphone to BA01 RCU
2. check the audio jitter
3. Disconnect the earphone

Scenario #2
1. Connect the earphone to BA01 RCU
2. Watch the Live channel for 5 minutes.
3. Sometimes there is audio jitter during watch TV

Thank you.
Sangmin Choi.

(SW) Sam Yang

2023-08-30 14:28

developer   ~0014032

Last edited: 2023-08-30 14:29

Hi Sangmin,

Please use this test FW to verify it: /release_by_fxn/swan_test_image/20230830_mantis1780/usb_bfx-ua300_V19.540.23_SD_v540r24dBtBitPool.zip
I modify the sampling frequency to 48KHz for A2DP streaming (Eagle also has this patch), and
modify reduce SBC frame Bitpool to 20 as https://mantis.cnsbg.foxconn.com/vaas/view.php?id=1785.

Thanks~
Sam

(ALTech) Sangmin Choi

2023-08-30 14:42

developer   ~0014033

Hello, Sam,

Thank you, I will test this firmware.
By the way, you mentioned that Eagle also has this patch. Can I know the commit of Eagle?

Thank you.
Sangmin Choi.

(SW) Sam Yang

2023-08-30 15:02

developer   ~0014034

OK, the commit is:
@ eagle10/system/bt
commit 6a2c58edbe8c8ed47fb269056c68114f210dd3ca
Commit: kerwin <kerwin.chen@foxconn.com>
CommitDate: Wed Sep 2 19:38:14 2020 +0800

    use 48KHz for A2DP streaming

(ALTech) Sangmin Choi

2023-09-11 15:30

developer   ~0014127

Hello, Sam,

FYI, SWAN still have jitter sometimes(7%) with final test firmware.
As you know, this operation is usually affected by test environments and our office is not good environments for test.
So, I want to test with EAGLE under same test environments.
If EAGLE has jitter like SWAN's frequency, I can say it's because of test environments.

I will update this mantis when I get the test result.

Thank you.
Sangmin Choi.

(ALTech) Sangmin Choi

2023-10-24 08:40

developer   ~0014384

Hello, Sam,

This commit was already pushed to 541 branch.
I will request to test this feature during BMT of 541 firmware.

Thank you.
Sangmin Choi.

(ALTech) Sangmin Choi

2024-09-03 15:11

developer   ~0016640

This issue was clear after apply the modification.

Issue History

Date Modified Username Field Change
2023-08-01 16:23 (ALTech) Sangmin Choi New Issue
2023-08-01 16:23 (ALTech) Sangmin Choi Status new => assigned
2023-08-01 16:23 (ALTech) Sangmin Choi Assigned To => (SW) Jacky Chiang
2023-08-01 16:23 (ALTech) Sangmin Choi File Added: logcat.log
2023-08-01 16:24 (ALTech) Sangmin Choi Note Added: 0013790
2023-08-02 09:05 (SW) Jacky Chiang Assigned To (SW) Jacky Chiang => (SW) Sam Yang
2023-08-02 13:34 (SW) Jason Ling Issue Monitored: (SW) Jason Ling
2023-08-07 09:35 (SW) Sam Yang Issue Monitored: (SW) Sam Yang
2023-08-11 15:19 (SW) Sam Yang Note Added: 0013873
2023-08-11 15:19 (SW) Sam Yang File Added: image.png
2023-08-14 14:32 (SW) Sam Yang Note Added: 0013878
2023-08-14 16:31 (SW) Sam Yang Note Edited: 0013878
2023-08-15 09:11 (SW) Sam Yang Assigned To (SW) Sam Yang => (ALTech) Sangmin Choi
2023-08-15 09:11 (SW) Sam Yang Status assigned => feedback
2023-08-16 08:21 (ALTech) Sangmin Choi Note Added: 0013884
2023-08-16 08:21 (ALTech) Sangmin Choi Assigned To (ALTech) Sangmin Choi => (SW) Sam Yang
2023-08-30 14:28 (SW) Sam Yang Note Added: 0014032
2023-08-30 14:29 (SW) Sam Yang Note Edited: 0014032
2023-08-30 14:42 (ALTech) Sangmin Choi Note Added: 0014033
2023-08-30 14:42 (ALTech) Sangmin Choi Status feedback => assigned
2023-08-30 15:02 (SW) Sam Yang Note Added: 0014034
2023-09-11 15:00 (SW) Sam Yang Assigned To (SW) Sam Yang => (ALTech) Sangmin Choi
2023-09-11 15:00 (SW) Sam Yang Status assigned => feedback
2023-09-11 15:30 (ALTech) Sangmin Choi Note Added: 0014127
2023-10-24 08:40 (ALTech) Sangmin Choi Note Added: 0014384
2023-10-24 08:40 (ALTech) Sangmin Choi Status feedback => resolved
2023-10-24 08:40 (ALTech) Sangmin Choi Resolution open => fixed
2024-09-03 15:11 (ALTech) Sangmin Choi Note Added: 0016640
2024-09-03 15:12 (ALTech) Sangmin Choi Status resolved => closed