OR-0037
Yumeo
Japan · 1985 – c. 2005
Ser. C-3090622
1988 · effect
Issued as VST3 · AU
Restored 2026 from 1988 hardware.
Yumeo CD-9 — CD Skip / Error Concealment
Yumeo CD-9 · compact disc player · restored from unit no. C-3090622 · Yumeo, Japan, 1988
The restorer's note
A failing disc, held at the moment it gives up — the interpolation, the brief digital silences, the stutter. The concealment logic is the real subject; a random glitcher only imitates it. Restored, fittingly, from a much-loved and much-scratched machine.
Acquisition
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The plate
The controls
The controls.
- Severity 0–100 % · 25 % as issued
- Sets how badly the disc is damaged, driving concealment through its stages — pass, interpolate, mute, then repeat — from light wear at 0 % to severe failure at 100 %.
- Stutter 10–500 ms · 120 ms as issued
- Sets how long the buffer repeats once the disc skips — the length of the freeze.
- Seek 0–100 % · 30 % as issued
- Sets how strongly the mechanism's hunting rhythm intrudes, as a transport nearing the end of its life would.
- Mute 0–100 % · 40 % as issued
- Sets the length and frequency of the digital silences once concealment gives up.
- Trigger Off as issued
- Forces a skip on demand, whatever Severity is set to.
- Sync Off as issued
- Snaps the Stutter length to the nearest division of your studio's tempo, instead of letting it run free.
- Input -24.00–24.00 dB · 0.00 dB as issued
- Sets the level going in, in decibels, before the signal reaches the restored circuit.
- Output -24.00–24.00 dB · 0.00 dB as issued
- Sets the level coming out, in decibels, after the restored circuit and the Mix blend.
- Mix 0–100 % · 100 % as issued
- Blends the restored circuit against the untouched signal at equal power, from the untouched signal alone at 0 % to the circuit alone at 100 %.
- Bypass Off as issued
- Takes the restored circuit out of the path and passes the untouched signal, delayed to match the circuit so nothing shifts in time.
A stored setup is a memory, shown where a track title would sit; the tray reads 03/12 ARCHIVE. The skip keys ◂◂ ▸▸ step through the memories without changing the sound, and PLAY loads the one shown. REC, then PLAY, opens a new memory's name, which starts as USER NN; TITLE EDIT renames a user memory. The skip keys change the letter, TITLE EDIT moves on, and PLAY stores it; the computer keyboard may type the name instead, Return storing and Escape cancelling as STOP does. ERASE clears a user memory on a second press.
Listening
Listening
Demonstration recordings, prepared at the bench.
Light wear, plainly
The mix runs dry, then on the player at Severity 25 % — the occasional held sample, a short mute, a disc that mostly still plays.
0:00 / 0:30
The escalation
Severity climbs from nought to full: the player passes, then interpolates, then mutes, then repeats what it has — the concealment order, in order.
0:00 / 0:30
Forced skips
Trigger forces the skip on demand. Stutter stretches from 60 to 300 ms, Seek hunts at 80 %, Mute sits at 70 % — and Sync then locks the stutter to the beat.
0:00 / 0:30