Arduino VGM player on ESP32 (SN76489 chiptune) with a moving panorama stereo effect

In this video you see the VGM player running on the ESP32.
All you hear comes directly from the PCB.
I made the 4 channels of the SN76489 emulation visible on the OLED screen.
In addition to that I tried to create a kind of moving panorama,
to generate a moving stereo separation.
The channels are floating around by changing the left/right volume
and the delay time changes too to simulate the changing distance.

The other features are the same as on the RP2040.

At the end of the video you will find a lot of music examples.

Used VGM files:
- Global Gladiators - 03 - Duelin-Dance.vgm
- Global Gladiators - 02 - Techno Tune.vgm
- Sonic The Hedgehog 2 - 03 - Act Start.vgm
- Sonic The Hedgehog 2 - 04 - Underground Zone.vgm
- Sonic The Hedgehog - 02 - Act Start.vgm
- Sonic The Hedgehog - 03 - Green Hill Zone.vgm
- Lemmings - 21 - Let's Go!.vgm
- Sonic The Hedgehog - 05 - Bridge Zone.vgm
- Sonic The Hedgehog - 06 - Chaos Emerald.vgm
- Sonic The Hedgehog - 08 - Bonus Zone.vgm
- Sonic The Hedgehog - 09 - Labyrinth Zone.vgm
- Sonic The Hedgehog - 10 - Act Complete.vgm
- Sonic The Hedgehog - 11 - Scrap Brain Zone.vgm
- Sonic The Hedgehog - 12 - Sky Base Zone.vgm
- Sonic The Hedgehog - 13 - Boss Theme.vgm
- Sonic The Hedgehog - 16 - Marble Zone (unused).vgm

Files were originally in .vgz format and I renamed them to .vgz, decompress them.
Finally, rename the uncompressed files back to .vgm before I could play them.

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Projects can be found on GitHub: https://github.com/marcel-licence
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Intro: (0:00)
Some thoughts: (0:40)
Changing parameters: (1:55)
More details: (2:57)
Muting channels: (4:03)
Listening to the channels: (4:36)
Stereo effect: (5:05)
PCM playback: (5:36)
Sonic The Hedgehog - 05 - Bridge Zone.vgm: (6:01)
Sonic The Hedgehog - 06 - Chaos Emerald.vgm: (6:31)
Sonic The Hedgehog - 08 - Bonus Zone.vgm: (6:36)
Sonic The Hedgehog - 09 - Labyrinth Zone.vgm: (7:36)
Sonic The Hedgehog - 10 - Act Complete.vgm: (8:36)
Sonic The Hedgehog - 11 - Scrap Brain Zone.vgm: (8:43)
Sonic The Hedgehog - 12 - Sky Base Zone.vgm: (9:37)
Sonic The Hedgehog - 13 - Boss Theme.vgm: (10:10)
Sonic The Hedgehog - 16 - Marble Zone (unused).vgm: (10:34)