Better music capabilities

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By Grauw

Enlighted (7794)

Grauw's picture

01-08-2018, 12:48

Not exactly what I did when I tried, but could be the same. Maybe coming week I’ll make that video.

By syn

Paragon (1893)

syn's picture

02-08-2018, 00:56

My advice is to download vortex tracker and just try to see whatever cool effects/ sounds you can do. Afaik this is the most advanced PSG tracker with a replayer for msx.

I do wanna try it sometimes myself.

By Grauw

Enlighted (7794)

Grauw's picture

07-08-2018, 01:08

Grauw wrote:

I recently did some experiments with ring modulation with the EG, playing with different frequencies for the tone and EG oscillators. Some nice sounds came from that. I should make a video.

With the help of my BeatStep Pro I made a nice PSG Envelope Jam video:

https://youtu.be/F2xFTPVDnfo

Turn on subtitles for commentary.

From about halfway on I’m just jamming a bit… sounds pretty nice if you ask me!

By FiXato

Scribe (1508)

FiXato's picture

07-08-2018, 02:51

You should do a jam session at a demoparty Wink

By DarkSchneider

Paladin (771)

DarkSchneider's picture

07-08-2018, 08:06

With the EG PSG can get good synth and bass sounds. Adding some vblank effects like arpeggio o echo to the tone channel (square one) can get very interesting things.

According to Yerzmyey, the EG have to be adjusted manually, I read it here:
https://soundcloud.com/yerzmyey/yerzmyey-orch-or

Quote:

Some complex synthesis has been used to avoid the usual boring square-wave of AY. The problem with those advanced synths is - literally all notes have to be tuned manually to a proper key/pitch. So You can imagine it's kind of tedious. ;)

Well, instead doing it for any song, it would be better to research the chipset a bit and implement programatically with an equation or table depending.

Also seems that ZX SoundTracker 1.1 is good for this PSG mode, it only uses EG and vblank effects, as musics made with it can be played in games.

Tip: the PSG sounds much better with a (calibrated) subwoofer attached, as it generates low frequencies that will not be played on normal speakers.

I see the message was posted at 1:08am, I can imagine the old man neighbor: "Hey punk, lower that!"

By Grauw

Enlighted (7794)

Grauw's picture

07-08-2018, 13:01

DarkSchneider wrote:

According to Yerzmyey, the EG have to be adjusted manually, I read it here:
https://soundcloud.com/yerzmyey/yerzmyey-orch-or

Quote:

Some complex synthesis has been used to avoid the usual boring square-wave of AY. The problem with those advanced synths is - literally all notes have to be tuned manually to a proper key/pitch. So You can imagine it's kind of tedious. ;)

Well, instead doing it for any song, it would be better to research the chipset a bit and implement programatically with an equation or table depending.

In my video sometimes I play the tone and envelope harmonically, and sometimes I play them separately. When playing separate I still try to play with harmonic offsets like fifths and octaves, although for the high tone pitches it doesn’t matter much anymore.

There’s a couple of considerations why I imagine Yerzmyey tweaks the pitches by hand; Firstly, the frequencies for the tones are more precise than those of the envelope, so that produces a variable relative detune. As a result of that the voice will be beating inconsistently. Secondly, equal temperament tuning is actually dissonant and can’t produce perfect fifths for example, the voice will also be beating due to that. Lastly, modulating at low ratios like 1:1 or 1:2 will cause the sound to drop out unpredictably because the phases aren’t locked. To mask those drop-outs actually a good amount of beating can be helpful I think.

If the goal is to produce a consistent timbre, I would start by making the tone use the envelope period as a base, shifting it four or five bits to the left, so that they’re exactly in tune and avoid the first point. Then on that period I would apply a harmonic multiplier, like on the OPLs, which should make sure they are in perfect harmonic relation, which would address the second point. Add a detune fraction to the multiplier to tweak the amount of beating, especially for ratios mentioned in the last point, and I think you’re set.

DarkSchneider wrote:

Tip: the PSG sounds much better with a (calibrated) subwoofer attached, as it generates low frequencies that will not be played on normal speakers.

I also notice that on my phone’s recording the drums actually sound a lot punchier thanks to the room’s reverb. But for the final video I replaced it with a direct feed recording off the mixer by my macbook for the best audio quality.

DarkSchneider wrote:

I see the message was posted at 1:08am, I can imagine the old man neighbor: "Hey punk, lower that!"

Nah, I recorded it at around 10 o’ clock or so. And my apartment has pretty thick walls. :)

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