Messages

1

preenfm2 and preenfm3 / Re: Yellow OLED : high frequency solution

« on: September 13, 2016, 02:53:26 PM »

Details screenshots....

 Hi Xavier - i noticed this peak on - 70 dB . This you normally can't hear . Have you set the Slope on the FFT to zero ( linear )
Specially this FFT had a slope function that enhances   the high frequencies  up to 6 dB  and its is on - on default .

2

preenfm2 and preenfm3 / Re: Raystar oled : Screen Issue - what I am doing wrong?

« on: August 29, 2016, 12:38:32 PM »

Hi ,  one thinhg, , i found here that  the Preen - powerd by USB  is not good .
I have on my USB power from the PC spikes and digital noise . This  so heavy that you hear it into the sound .
 This i had also by some clients. After changing from USP power to a separate Power supply  - all is OK .

So i switch the preen to a separate power supply. And the noise is away .
 I think this spikes can go also direct into the OLED and the result can be that  the OLED hangs .  It is a MAYBE - not a must 
 but i will test it on my next build and let you know .
Greets
 Andre'