Reply 40 of 66, by superfury
I've just made a little recording, with Links 2 (XT 10MHz emulation on UniPCemu) and compared it to the Youtube recording( https://www.youtube.com/watch?v=m6Uoi9U3gKA ) at https://www.dropbox.com/s/gn83bp8uen2ut5t/Uni … yquist.wav?dl=0
I've modified the low-pass filter to filter at the nyquist frequency(44.1kHz samplerate, with 96dB attenuation(assuming 6dB per octave)).
//Speaker low pass filter values (if defined, it's used)! We're 96dB dynamic range, with 6dB per octave, so 16 times filtering is needed to filter it fully at the nyquist frequency.
#define SPEAKER_LOWPASS ((((float)SPEAKER_RATE)/2.0f)/16.0f)
Although there's some soft noise in the background of UniPCemu's recording, could Youtube be filtering that away?
Edit: I've made a little recording of UniPCemu running 8088MPH (compare against the original 8088MPH recording mpg):
https://www.dropbox.com/s/k8dp8ot0nyvw9he/Uni … 088MPH.zip?dl=0
Original 8088 MPH recording for reference: https://www.dropbox.com/s/9ydrycafqdmd332/808 … %20MPH.mpg?dl=0
Sounds pretty close, although the original noise is a bit softer(more white-noise instead of heavy vibe that's in UniPCemu) it seems?
Author of the UniPCemu emulator.
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