Quote from: smh on May 30, 2021, 21:55:20I have this exact model and I tested it with my phone, I set exposure time to 1/500s in the camera app and pointed it at the screen, indeed it shows largely static slanted stripes, and only the thickness of the stripes change with the brightness, indicating a fixed PWM frequency of about 250Hz . At 50% brightness, exactly half of the screen is illuminated on my viewfinder, i.e. half the thickness of each stripe is black. Subjectively, though I consider myself sensitive to PWM, I don't experience particular eye strain with any setting above 10%, so I can say that the shape of the voltage wave matters, aside from frequency.Quote from: Micron1- on May 30, 2021, 19:45:37How do you know? I want a response from the article writers
Not 10%, its mistake.
Actually 100% and 250Hz
Quote from: Ohreli on June 02, 2021, 20:06:47I guess something that would make sense to explain this is that HP didn't do any tuning to the speakers, but why would they do that to their best end configuration....
Your guess is as good as mine! But in this review the audio went from being in the top 4% of 'tested devices in the class' to the top 14%. Enough to bring the Audio rating down from 84 to 76. Something must be off somewhere...
Quote from: Ohreli on June 01, 2021, 05:43:04They should be the same model, as why the heck would HP waste money on making an entire different production line for worse speakers, so I believe it's just percentage of error I guess.
The top of the review says "Because both the HP Spectre x360 14-ea0378ng and the HP Spectre x360 14t-ea000 are identically built, we shall skip the sections that deal with the case, connectivity, input devices and the speakers." But the speaker analysis, stats and rating for this model is NOT the same as for the 14t-ea000...it is lower and implies the speakers are inferior to the sibling model. Can anyone help explain the contradiction?
Quote from: Micron1- on May 30, 2021, 19:45:37How do you know? I want a response from the article writers
Not 10%, its mistake.
Actually 100% and 250Hz
Quote from: smh on May 30, 2021, 04:28:01
Holy crap, this is the best form of PWM I've seen. 250 hz under only 10%? DC dimming above all of that? Wow, HP, I'm surprised
QuoteThe display backlight flickers at 250 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 10 % and below.Brilliant $ngin$$ring work, HP! And fantastic revi$w! Very profe$$ional!