Monday, January 30, 2023
Excel tips and tricks
Friday, July 15, 2022
Audio /video testing
common issues:
- No two-way Audio or video
- Audio is low even volume level is appropriate
- Default volume level not set
- Audio/video lagging(no sync) /glitches
- Echoing
- Noise suppression/echo cancellation
- video grainy stuck dark
- Autoframing
- Splitting views
How do we test it?
- Using an audio setup from the sender side, we play an audio file with noise or a mix of noise and voice, to see if the voice is not suppressed along with the noise.
- On the receiver side, we mute the microphone because there are some features that reduce incoming audio during speech and can impact results.
- During the call, we record the processed audio on the receiver side.
- After the call, receiver side recording is compared with the original audio file that was played from the sender side using waveform graphs of the audio tracks.
- We analyze the amount of time it takes for the noise suppression to start taking effect (delay).
- We analyze the amount of suppression applied by comparing receiver side recording volume with the original noise file volume (in dB).
- We analyze the consistency of the suppression throughout the receiver-side recording.
- We also listen to the recordings, to further determine the amount and quality of suppression.
- For result consistency, we play a constant audio file from the sender side using an audio setup.
- On the receiver side, we either play silent audio (not muted) or play a constant audio file to see how the incoming audio reacts with outgoing audio (how the echo interacts with the audio that the receiver is sending back to the sender).
- During a call, we record:
- the outgoing audio on the sender side (naturally, it would be the audio recorded by the microphone)
- the incoming audio on the receiver side (the audio that is coming out of the receiver device speaker)
- the outgoing audio on the receiver side (the audio that is recorded by the receiver device microphone)
- the incoming audio on the sender side (the audio that is coming out of the sender device speaker)
- After all the necessary audio files have been recorded in a call:
- Each file is listened to to assess the echo level and sound quality.
- We compare each file with the original audio file played on the sender side to see which parts and how much of the audio became echo, using visual representations of the audio tracks for more straightforward analysis.
- We measure the delay between sent and received audio – the delay of echo.
- The maximum volume of each audio file is measured to see how the volume changes during voice processing.
Audio analyzers: What they are and what they do | KnowTechie
Thursday, April 28, 2022
Notes to be succesful
1. Increase Dependency in the team
2. Updates on current work
3. Upcoming works releases
4. Meetings-Active listening
5. Initiation motivation
6. Be on top of it- follow up email's communication
7. Initial questions to gather info like
what build?
what environment ?
what accounts ?
what feature ?
what are the steps ?
what are the expected results?
what tools?
what versions?
ETAs to complete tasks
8. Prioritize tasks
9. unblock
10. Curiosity to learn new things.
Friday, March 25, 2022
Windows explorer debugging
Situation: Explorer does not work/crash/slow
Task: make explorer work
Action and resolution:
- observe what is doing crashing/slow
- Restart
- check for updates (WU)
- Check additional updates
- Uninstall latest installed malfunctioning app
- Uninstall recent WU
- What changes made to file explorer
- Is there alternate ways to open explorer(windows +x then search)
- virus/corruption
- drivers issue? update driver
- Boot to safe mode and check if the issue persists. If the issue does not persist then the issue may be due to third party software/applications. To determine which third party app/program is causing this issue, we will try placing the computer in clean boot state and check.
- Run System File Checker tool (SFC) scan and check if there is any system file missing or corruption found. This scan will help you to replace the corrupted or missing system files. below commands
This issue might occur if the system files are missing or corrupted. I suggest you to use the Deployment Image Servicing and Management (DISM) tool to fix Windows corruption errors. Here's how:
1. Right click on Start, click on Command Prompt (Admin).
Type Dism /Online /Cleanup-Image /ScanHealth and press Enter.
Type Dism /Online /Cleanup-Image /CheckHealth and press Enter.
Type Dism /Online /Cleanup-Image /RestoreHealth and press Enter.
2. Check to see if the issue is resolved. If not, restart the system.
9.Take help in support
10. Event ID 1000 usually points to an error with the Windows Explorer process. Once you've located a suitable error, select it, then check the General information listed below. This will provide some background on the cause of the issue, which you may need to research and troubleshoot further
shortcuts
Add/Remove Programs
appwiz.cpl
Add Hardware Wizard
hdwwiz.cpl
Automatic Updates
wuaucpl.cpl
Bluetooth Properties
bthprops.cpl
Display Properties
desk.cpl
Firewall Properties
firewall.cpl
Game Controllers
joy.cpl
Internet Options
inetcpl.cpl
iSCSI Initiator
iscsicpl.cpl
Java Control Panel
jpicpl32.cpl
Licensing Mode
liccpa.cpl
Mouse Properties
main.cpl
Network Connections
ncpa.cpl
Network Setup Wizard
netsetup.cpl
ODBC Properties
odbccp32.cpl
Power Options
powercfg.cpl
Regional and Language Options
intl.cpl
Sound and Audio Devices
mmsys.cpl
Stored Passwords
keymgr.cpl
System Properties
sysdm.cpl
Telephone and Modem Properties
telephon.cpl
Time and Date Settings
timedate.cpl
User Accounts nusrmgr.cpl
Windows Security Center
wscui.cpl
Wireless Link
irprops.cpl
Thursday, March 24, 2022
What are the top skills you should learn for the future?
What are the top skills you should learn for the future?
Artificial intelligence
Coding. ...- Cloud computing. ...
- Blockchain. ...
- UX design. ...
- Critical thinking. ...
- Emotional intelligence. ...
- Communication. ...
- Leadership. Possessing strong leadership skills means that you know how to effectively motivate and direct others, setting up your entire team for success.
Wednesday, January 26, 2022
Microsoft Windows OS few basics:
- Settings
- Registry-regedit
- Control Panel- appwizard.cpl
- Events viewer
- Services.msc
- Network and internet settings
- VPN
- PBR
- BMR
- Power and sleep settings
- Account settings
- Sound settings
- Windows explorer
- computer management
- Winver
- System information
- Ease of access
- Task manager
- Task scheduler
- Device manager
- Disk management
- Windows updates
- Firewal
- Apps features
- Add device
- Display settings
- Time and language
- Windows store
- 100-shortcuts-using-keyboard.pdf (utoledo.edu)