OR-0013
Tekura
Oregon, USA · 1979 – c. 2001
Ser. Type 2200 · Ser. No. 01138-B
1990 · effect
Issued as VST3 · AU
Restored 2024 from 1990 hardware.
Tekura 2200 — Signal Decimator
Tekura Type 2200 · Signal Decimator · restored from Ser. No. 01138-B · Tekura, Oregon, USA, 1990
The restorer's note
Where most sample-rate reducers hide the aliasing, Tekura's instrument makes it a measured choice — clean band-limited decimation, or the folded-over kind, on a switch. An engineer's honesty, put to destructive use. Restored from a revision-B bench unit.
Acquisition
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The plate
Listening
Listening
Demonstration recordings, prepared at the bench.
Eleven kilohertz, plainly
The phrase runs dry for five seconds, then the bench default: sample-and-hold to 11.025 kHz, anti-alias off. The top octave folds back into the material.
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The rate walked down
Rate is walked from 26 kHz down to 1 kHz in one pass — sample-and-hold, no anti-alias filter. The foldover arrives on schedule; nothing here is misbehaving.
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Two ways down
The same figure taken down two ways: Band-limited at 4 kHz with the anti-alias filter in, then Sample-and-Hold with it out. The Output Filter closes to 3.5 kHz at the end.
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