[hatari-devel] LMC1992 and Microwire emulation

Anders Eriksson ae at dhs.nu
Wed Mar 31 15:31:10 CEST 2010


On Tue, 30 Mar 2010, David Savinkoff wrote:

> Looks good to me. Test away and criticize. Try filtering vs non filtering.
> I hope the code can help with troubleshooting the sound by way of
> determining whether bad sound is due to aliasing or otherwise.
> Try different sampling frequencies also; to see which sound best.

Hi!

I've tested the latest Hatari as of this morning.

The bass/treble levels seems better, but still not quite on level 
with a real STe. Also it leaves some high-pitch noise sound now and then.

Example: http://ae.dhs.nu/tmp/phazer_hg4.mp3
>From real STe: http://ae.dhs.nu/tmp/phazer_ste.mp3


I also tested a couple of other STe-demos and found qute bad sound 
distortion, examples:

1. Dynamite demo by Unit 17
  - Demo: http://pouet.net/prod.php?which=30915
  - Hatari mp3: http://ae.dhs.nu/tmp/dynamite_20100331.mp3

2. Songs of the unexpected by OUCH
  - Demo: http://pouet.net/prod.php?which=22398
  - Hatari mp3: http://pouet.net/prod.php?which=22398

I did not notice much if any difference between 44100, 48000 or 50066 Hz 
settings in Hatari.

--
Anders Eriksson
ae at dhs.nu     http://www.dhs.nu/
ae at atari.org  http://www.atari.org/



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