Testing sound of different MSX sound chips and their FPGA implementations

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By KdL

Paragon (1122)

KdL's picture

14-06-2018, 19:26

Pencioner wrote:

3) I wonder if somebody can make PCB layout for Zemmix Neo in respect of audio quality (i mean having much less noise). I'd definitely buy one even if it costs more

1chipMSX is already okay in this sense.

By Pencioner

Hero (653)

Pencioner's picture

14-06-2018, 20:39

KdL wrote:

1chipMSX is already okay in this sense.

Yep but it costs way too many times more (ok, 2 times more would be ok, but OCM now costs some rocket price, >5 times than Zemmix Neo)
Smile
No prob whatsoever, i don't know when i buy it, but i think Turbo-R should be bought first, once in the future...

By Pencioner

Hero (653)

Pencioner's picture

14-06-2018, 23:17

PSG test update

I also have some recordings of real PSGs provided by @sdsnatcher73 - if anybody interested i can host them too, there's sounds of CX5M, CX7, FS-A1ST, HX-10, and NMS8245 computers. Those are in .m4a format but i can convert to .flac for convenience. Those recording weren't volume-normalized at all, though.

By Pencioner

Hero (653)

Pencioner's picture

15-06-2018, 23:44

SCC test update

Covers the latest firmware versions of MFR and Carnivore 2

By KdL

Paragon (1122)

KdL's picture

12-07-2018, 03:29

I was checking 1chipMSX to figure out what was wrong with the audio noise of Zemmix Neo.
With 1chipMSX the audio lines use separate resistors and not networks and I think this is the secret to reducing the audio noise.

Check this image at the bottom of Cyclone:

By Parn

Champion (304)

Parn's picture

12-07-2018, 19:35

@KdL, the image is not loading.

By mars2000you

Enlighted (5372)

mars2000you's picture

12-07-2018, 19:37

Chrome says when going to the URL of the picture:

ERR_TOO_MANY_REDIRECTS

By TomH

Master (217)

TomH's picture

12-07-2018, 22:58

No problem whatsoever with the image here, in either Firefox or Chrome. Does the repost below help anyone?

By mars2000you

Enlighted (5372)

mars2000you's picture

12-07-2018, 23:19

Yes, I can see the reposted picture.

By Parn

Champion (304)

Parn's picture

13-07-2018, 03:21

I can see it fine now, too. Thanks! The picture is quite interesting.

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