SOUND main core based on Korg Ai^2 synthesis manages 32 digital voices (also called "oscillators") at 32kHz rate with 16 bit resolution. The basic sound is called a PATCH composed by one (single mode) or two (double mode) detunable digital oscillators with 4' /8' /16' /32' octave heights.
WAVETABLE Standard 01 models like 01w/ 01Wfd /01RW have a 6 Mb wavetable, while PRO / "PROx have a larger 10 Mb with an extra sampled piano and more drum PCM waveforms.
The standard 6Mb wavetable (expandable with PCM cards) features 255 PCM wavetable including acoustic instruments (a bit outdated) but also FM and mathematically generated waveforms like Square / Saw useful for some vintage-analog sounds creation! and like many EMU synthesizers, the 01 allows to change the starting sample offset start.
MULTITIMBRAL the Performance COMBINATION allows up to 8 individual parts each with individual Midi channel, Detune, Panning,, Transpose, Mixing volume (assignable to one of the four audio outs) and relative numbers of split zones.
WAVESHAPING this process changes the harmonics contents of a sample distorting it with of the 60 one cycled waveforms each with specific spectral harmonics. Each oscillator has various possible waveshapes that are not editable except for the shaping Envelope, and its amount applied to the samples.
>IHMO< waveshapping results can be radical, especially useful for lead instruments but don't expect sonic miracle! later this feature will be implemented later on more modern Korg synthesizers like Z1 and Prophecy.
LFO three digital Low frequency Oscillators called MG with quite same characteristics.
Two MG modulates respectively OSCILLATOR1 and OSCILLATOR2, while the last one is dedicated to the FILTER VDF cutoff; note that VDF MG can be activated individually to OSC1 - OSC2 Cutoff . MG on OSC1-2 also have extra options like Frequency rate from key Velocity or Aftertouch, while MG VDF has Depth, joystick bender and a Delay IN for progressive rate increasing.
A LFO have five possible waveforms Triangle / Saw Up-down / Square / Random with special Delay Start engage and Retrig note mode.
FILTER digital non-resonant VDF.
Quite weak same as M1 with simple
two poles LOWpass with a kind of Emphasis Q emulation called VDF color.
Usual keytrack stuff compensating cutoff to lower or higher octaves.
ENVELOPE five digital EGs in total: Amplitude for OSC1 and 2 (VDA), Filter for OSC1 and 2 (VDF) with four segments and three times, while the last one Pitch EG is simpler with only three segments and three times.
FX same as Wavestation DSP featuring 2 independent processors at 16 bits (but still a bit noisy) in serial or parallel modes. This sections counts 47 different effects such as Reverbs/ Delay /Overdrive/ EQ /Chorus /Rotary speaker plus some effect chain combinations like Delay / Phaser.
<TIP> The Wet and Dry balancing amount can be changed with the relative Midi Control Change.
SEQUENCER Even if today obsolete, the sequencer still features some nice functions like: OVERWITE, PUNCH IN, LOOP, OVERDUB, TRANSPOSE, VENT EDITO/FILTER, BOUNCE, COPY TRACK, VELOCITY MODIFY. External or internal Midi clock in master or slave mode.
Characteristics: 16 tracks / 10 songs / 7000 notes (48.000 on FD model) recordable with real time or step by step mode.
MEMORY internal RAM holds 200 patches and same amount for combination (battery memory is CR-2032) - click on picture for zoom.
Data backup can be saved to external RAM card mode Korg SRC-512 (PIC) or to Floppy disk (ONLY on FD and PRO - it's a DD / 720 Kb) or simpler midi SYSEX dump.
01 TROUBLES sadly the 01 internal components are no so good: after some years the screen may disappear as well as sound generation! This seems to be a common problem on this series, so before buying one be sure the check the machine' s health.
Generally some bad capacitors leak inside creating corrosion around tracks. Some luck there's no custom KORG IC around - I had to replace these: C85, C29 and C30, C102, C103 and C130.
01 FAMILY RELATED MODELS
-01R/W – Rack version
-01/W – classic 61 key version.
-01/W fd – add a drive to the standard 01 W 61 keys.
-01/Wpro – 76 keys version with drive and an extra piano wavetable.
-01/WproX – 88 versions weighted, drive and piano wavetable.