Quote:
Originally Posted by MustardOrMayo
I have been predicting Kobo adding audiobook support to their e-readers as part of a new 8th generation hardware platform, that could premiere with a successor to the Kobo Forma, which I imagine will be called the "Kobo Forma Edition 2". Hopefully that includes an improved frontlight that doesn't use PWM, which I've seen some users complain about. I also picture that Kobo could add a memory card slot and/or USB-C with OTG support, with USB audio support like what is available on most of the current generation Kindle e-readers.
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I found the complaints about PWM at best amusing. The Forma uses 1KHz modulation for PWM. I could not find any reputable research showing that any human being could notice the flicker from PWM at that rate. The highest numbers I found were statements that a few people appeared to be able to notice flicker at a PWM rate of 400Hz during saccades (rapid eye movements).
Another study which tested people's ability to notice flicker due to PWM showed that the overwhelming majority of the people who complained about the flicker from a 400Hz source also complained about the flicker from a DC source (the testees did not know that there were two different light sources involved to eliminate placebo effects). Admittedly, this test was based on testing people's reactions to PWM car tail lights but the principle is the same.
As for adding an external card slot? Wanna buy a bridge? Only slightly used!