16 replies to this topic

[Faicuai]

...Would love to reproduce this one, from Altirra on a HDMI digital-to-digital path all the way to my Receiver/Speakers, and just have a blast:



Supposedly, the music is from "born/la resistance"...

My apologies if this was answered, but the original video's recording lacks plenty of high-frequency detail on it.

Thanks, in advance, for anyone's help!

[emkay]

Faicuai, on Sat Feb 4, 2012 6:38 PM, said:

...Would love to reproduce this one, from Altirra on a HDMI digital-to-digital path all the way to my Receiver/Speakers, and just have a blast:



Supposedly, the music is from "born/la resistance"...

My apologies if this was answered, but the original video's recording lacks plenty of high-frequency detail on it.

Oh.... I'd not say there is lacking in the high frequencies...I'd bet it was intentional to linearize/optimize the used sounds for common Pokey usage .

Edited by emkay, Sun Feb 5, 2012 2:59 AM.

[candle]

vbxe pack, atari 1200xl logo (if i released this one)

[Faicuai]

candle, on Sun Feb 5, 2012 3:09 AM, said:

vbxe pack, atari 1200xl logo (if i released this one)

Thanks... do you mean that the actual tune (which I could play back on Altirra) is on the VBXE 1.24 Core-Pack file? One of the .ATRs included in there?

Not sure I got your answer clearly.

F.

[candle]

altirra config:
hard disk disabled
vbxe enabled
stereo enabled

Attached Files

•  1200xl.xex   7.59K   29 downloads

[Faicuai]

candle, on Sun Feb 5, 2012 8:23 AM, said:

altirra config:
hard disk disabled
vbxe enabled
stereo enabled

There it is (!)

Exactly as I thought, once reproduced directly from Altirra (needs PAL freq., though), and played-back fully digital, from source to sound-processor, the sound is CRISP and crystal-clear (does not sound "charred"/opaque or like audio material recorded on the mono-aural track of my SuperBeta SL-HF750).

The reason I like this tune so much, is because it combines, very nicely and balanced, the sweet sound of "chip-tune" with something more "organically" musical in nature, which flows and beat nicely (even if repeated over-and-over). On my 1000-watts home-theater (calibrated with Audyssey EQ/XT), it sounds just sweet. I would only wish, this time, for a bit more low-freq. boost (anything from 40 to 120hz).

I just wish this tune would be the FIRST thing I hear when booting-up the Ultimate1MB, with an option to turn it on or off on the main menu, and either 50hz or 60Hz playback (or autodetect, for this matter).

In fact, I would like this to be in ALL of my machines, for this matter.

A big THANKS (!)

[sack-c0s]

so... we're talking a high-end, 100% faithful audiophile setup connected to an *emulator*? I thought there were a lot of outstanding accuracy issues with POKEY sound emulation?

If that is the case wouldn't you just be perfectly reproducing a very heavily flawed source? or has altirra made a lot of improvements on that front - it's been a while since I looked last...

[emkay]

sack-c0s, on Mon Feb 6, 2012 5:20 AM, said:

so... we're talking a high-end, 100% faithful audiophile setup connected to an *emulator*? I thought there were a lot of outstanding accuracy issues with POKEY sound emulation?

Particular Altirra is a King of Sound-Issues .

[Faicuai]

emkay, on Mon Feb 6, 2012 11:42 AM, said:

sack-c0s, on Mon Feb 6, 2012 5:20 AM, said:

so... we're talking a high-end, 100% faithful audiophile setup connected to an *emulator*? I thought there were a lot of outstanding accuracy issues with POKEY sound emulation?

Particular Altirra is a King of Sound-Issues .

...I just noticed that my forum's pollution-control was actually working since I left it on eons ago, which kind of explains your comment's context...

In any case, the out-of-context "confuzion" comes from mixing "emulation-quirks" with the concept of "playback spectral response". Sort of hearing an electric-guitar (rock-performance) via a TDM, 64Kbps land-line (phone), instead of sending it through a [wide-range-amplifier + speakers]. That same distorting-guitar is going to sound a lot different through any of these two reproduction channels.

The tune chosen for Ultimate1MB's video, and when played from youtube, actually delivers audio that is (spectrally) way sub-par to the clarity I have heard coming from my actual machines, and much less of what Altirra is capable of delivering (with similar tunes). Such differences are not rooted at audio emulation "glitches", etc., unless those emulation glitches dramatically enhance the aural spectra, in which case, I will have no problem ditching the true-to-HW version, and thank the Emulator for enhancing my baseline experience in ways completely beyond the original hardware's possibilities (which it does, for the most part).

It only takes playing back both sources, at the same time, in your computer, and compare the OMINOUS differences in quality (all in favor of the digital-to-digital reproduction).

It is what it is, no matter how you chose to dress it.

F.

[candle]

funny thing though since it was recorder with altirra
the only thing that differs is compression

[Faicuai]

candle, on Mon Feb 6, 2012 1:47 PM, said:

funny thing though since it was recorder with altirra
the only thing that differs is compression

...I also recorded yesterday evening, from Altirra (.AVI, third video-compression option, true-to-HW frame-rate), and the audio came nice and clean, when playing back the resulting .AVI file (I have not checked the audio-stream enconding left on the .AVI, though).

Your final encoder most likely chopped / killed your audio's original encoding. I will post tonight a high-quality TMPGenc4-encoded rendering, so you can directly compare the differences in audio quality.

F.

[candle]

i know its lausy, but it was not the point of this video
i've gone though all possible video editing software i could find (open source), and yet returned to virtual dub altirra and audiacity for audio synchronisation
it came out quite good, and i'm happy with it

[Faicuai]

candle, on Mon Feb 6, 2012 4:58 PM, said:

i know its lausy, but it was not the point of this video

Absolutely, it was certainly not the point, and it was not lousy at all. In fact, that's what sold me into the Ultimate1MB (!).

The rest here is about the chip-tune alone, and how to listen to it, in all of its glory...

Here it is, Linear-PCM audio, untouched, @ (16bits, 48Khz), aprox. ~75MBytes, just as it came out of Altirra's sound engine:




THANKS,

F.

[sack-c0s]

candle, on Mon Feb 6, 2012 4:58 PM, said:

i know its lausy, but it was not the point of this video
i've gone though all possible video editing software i could find (open source), and yet returned to virtual dub altirra and audiacity for audio synchronisation
it came out quite good, and i'm happy with it

The problem is with all the skill, cunning and fine-tuning in the world you still have to pray that the gods of youtube don't frown upon you and flatten your audio and video into a blurred and muddy mess once you've uploaded it.

I think the trick is rather than compressing it in the most faithful and best way possible you need to find the combination of settings that convinces youtube to not reencode the file after upload. you take a bit of a hit upfront in terms of quality but you stop them taking your 'perfect' file and destroying it so you end up with a better video overall.

[Mclaneinc]

@Faicuai, re youtube avi by you, I noticed there's horizontal bars across the image (which looks nice) but using the same Altirra your settings and the xex by Candle I don't see them?

Have I missed something (apart from a brain) ?

Edited by Mclaneinc, Tue Feb 7, 2012 6:11 AM.

[Faicuai]

Mclaneinc, on Tue Feb 7, 2012 6:08 AM, said:

@Faicuai, re youtube avi by you, I noticed there's horizontal bars across the image (which looks nice) but using the same Altirra your settings and the xex by Candle I don't see them?

Have I missed something (apart from a brain) ?

Nope, your observation is dead-on, indeed.

Those "bars" appear to be the result of playing the content I uploaded THROUGH YouTube. I notice that I am forced to "360 or 480p", but this video holds significantly more vertical resolution than that, though.

I actually played-back the same file I uploaded, directly on Windows Media Player (here on my Win7/64 HomeTheater setup), and the video plays exactly as encoded (720x576, 25fps), with no bars of any kind.

The AUDIO of the tune, on the other hand, seems intact, and plays perfectly (which was the main request of this whole thread).

Thanks,

F.

[Mclaneinc]

Faicuai, on Tue Feb 7, 2012 8:14 AM, said:

The AUDIO of the tune, on the other hand, seems intact, and plays perfectly (which was the main request of this whole thread).

Thanks,

F.

Oh yes I realised that but I just saw something that seemed a bit odd video wise, wasn't trying to derail the topic..

Solved all round..