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> [EMU] My Nes 7.5.71, Emulateur NES/Famicom
shu
posté 11/06/19 - 23:57
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My Nes 7.5.71


Voici du nouveau pour My Nes, émulateur NES pour Windows (XP_SP3/Vista/7/8/8.1/10 en X86 et X64) et Linux, qui passe en version 7.5.71.

L'émulateur supporte plus de 1000 roms. Le moteur du rendu vidéo utilise les librairies .Net (le .NET Framework 4 est requis), ce qui permet un affichage des couleurs réelles et avec la plus grande précision. Il est possible de modifier la palette de couleurs d'un jeu. De plus l'affichage peut être soit en 16 bits, soit en 32 bits.

Changelog :

Citation
* My Nes (Win) Version 7.5.7100.2949; Built at 10, Jun, 2019 01:38.
- Added: enable filters in Audio option.
- Improved: sound playback quality (both renderers) by configuring buffer size and latency (buffer options are removed).

* My Nes GTK Version 3.2.329; Built at 10, Jun, 2019 21:35.
- Added: enable internal filters in audio settings.

* My Nes SDL Version 2.1.55; Built at 10, Jun, 2019 21:06.
- Improved: sound playback quality (SDL2 audio provider) by configuring buffer size and latency.

* Core Version 7.5.7100.447; Built at 10, Jun, 2019 00:14. (Universal, shared by all)
- Fixed: Square sound channels sequencers (wrong counting through the look-up table).
- Fixed: sound aliasing by implementing proper low-pass filter for down-sampling.
- Improved: sound quality by adding the proper filters as described in nes wiki.

Notes:

- It is recommended to switch into SlimDX renderers, for both video and sound for this version (unless there are quality issues).
- My Nes emulation engine outputs sound at ~1.79 MHz, in real nes (as described here <http://wiki.nesdev.com/w/index.php/APU_Mixer>) there are 3 filters:
. A first-order high-pass filter at 90 Hz
. Another first-order high-pass filter at 440 Hz
. A first-order low-pass filter at 14 kHz
Now My Nes implement all these filters after output in 1.79 MHz. All filters (low-pass and high-pass) are implemented as described in the wiki, in other words, they work using the actual physical equations.
After that, for down-sampling into the playback sound frequency, a low-pass filter is implemented at playback frequency as well.
- So, in My Nes, the audio process works like this:
EMU OUTPUT at ~1.79 MHz => high-pass filter at 90 Hz => high-pass filter at 440 Hz => low-pass filter at 14 kHz => low-pass filter at playback freq (i.e. 44100 Hz for default) => write samples into playback buffer (i.e. play sound).
- If you notice performance issues in this version or simply you don't like the sound quality, you can still disable this filters in the main menu: Audio>Enable Filters.
When this option is disabled, the filters order will be like this:
EMU OUTPUT at ~1.79 MHz => low-pass filter at playback freq (i.e. 44100 Hz for default) => write samples into playback buffer (i.e. play sound).
This may cause some sound issues like aliasing, corrupted square melodies ...etc
- Sound buffer size is now fixed for each renderer: 16 KB for SlimDX Direct sound and 5KB for SDL2Sound. These buffer sizes found best for quality and performance.


Site officiel : http://mynes.sourceforge.net/

Hébergement du projet : https://sourceforge.net/projects/mynes/

Section NES/Famicom
Set No Intro NES/Famicom


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La Légende renait le 19/11/2019 !

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