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  • Message 21 of 23

Re: T490 Static Hiss/Noise from speakers

2019-10-07, 15:29 PM

I have never noticed this with my T490s.  I will add the fact that I have "old ears" (to fit in with the rest of the package).  There have been times on other models where a whine from a fan or something else could only be heard by younger users.


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.

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  • Message 22 of 23

Re: T490 Static Hiss/Noise from speakers

2019-10-20, 0:33 AM

The noise can be easily detected by phone and an application with an FFT spectrum analyzer. The noise begins at cca 7000Hz, peaks at 10500Hz and ends at 16500Hz.

I am 24 years old and I can clearly hear it. The quality of the speakers is in general very bad and I am very dissatisfied.


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  • Message 23 of 23

Re: T490 Static Hiss/Noise from speakers

2020-01-18, 6:14 AM

I'm not hearing any hiss but I am wondering if you folks are hearing speakers crackle or eletrical sounds when coming out of a long period of sleep mode. I also heard this when switching WIFI to a different SSID i.e. switching to 5G or to tether. Once I thought I heard it on cold boot. 


However, after some reserach I disabled Windows Fast Boot and have not heard any more unusual sound. I'm wondering if this is a Windows issue or a hardware issue?


I'm using a P43s. ITs the same as a T490 basically. 

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