Roland TB-303
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 TB-303 Front Panel |
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| Manufactured by | Roland |
|---|---|
| Dates | 1982-1984 |
| Price | £238 UK, $395 US |
| Technical specifications | |
| Polyphony | monophonic |
| Timbrality | none |
| Oscillator | Sawtooth and Square Wave |
| LFO | none |
| Synthesis type | Analog Subtractive |
| Filter | 64db low pass resonant filter, non self oscillating. |
| Aftertouch | No |
| Velocity sensitive | No |
| Memory | 64 Patterns, ? Songs, 7 Tracks |
| Effects | No Internal Effects. |
| Input/output | |
| Keyboard | No |
The Roland TB-303 Bass Line is a synthesizer with built-in sequencer manufactured by the Roland corporation from 1982 to 1984 that had a defining role in the development of contemporary electronic music.
The TB-303 (named for "Transistorized Bass") was originally marketed to guitarists for bass accompaniment while practicing alone. Production lasted approximately 18 months, resulting in only 10,000 units. It was not until the mid- to late-1980s that DJs and electronic musicians in Chicago found a use for the machine in the context of the newly developing house music genre.
In the early 90's, as new Acid styles emerged, the TB-303 was often overdriven, producing a harsher sound. Examples of this technique include Hardfloor's 1992 EP "Acperience", and Interlect 3000's 1993 EP "Volcano".
The well-known "acid" sound is typically produced by playing a repeating note pattern on the TB-303, while altering the filter's cutoff frequency, resonance, and envelope modulation. The TB-303's accent control modifies a note's volume, filter resonance, and envelope modulation, allowing further variations in timbre. A distortion effect, either by using a guitar effects pedal or overdriving the input of an audio mixer, is commonly used to give the TB-303 a denser, noisier timbre—as the resulting sound is much richer in harmonics.
The head designer of the TB-303, Tadao Kikumoto, was also responsible for leading design of the TR-909 drum machine.
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[edit] Features
The TB-303 has a single audio oscillator, which may be configured to produce either a sawtooth wave or a square wave. The square wave is derived from the sawtooth waveform using a simple, single-transistor waveshaping circuit[1]. This produces a sound that is subtly different from the square waveform created by the dedicated hardware found in most analog synthesizers. It also includes a simple envelope generator, with a decay control only. A lowpass filter is also included, with -64 dB per octave attenuation, and controls for cutoff frequency, resonance, and envelope modulation parameters. Whilst not unique, the choice of a 3 pole design for the filter is somewhat uncommon, the standard configuration in analog synthesizers is almost always a 2 or 4 pole design. This, coupled with the way the filter modulations are bipolar, make the 303 sound difficult to exactly clone on hardware not specifically designed for that purpose.
The TB-303 sequencer has some unique features that contribute to its characteristic sound. During the programming of a sequence, the user can determine whether a note should be accented, and whether it should employ portamento, a smooth transition to the following note. The portamento circuitry employs a fixed slide time, meaning that whatever the interval between notes, the time taken to reach the correct pitch is always the same. The accent circuitry, as well as increasing the amplitude of a note, also emphasizes the filter's cutoff and resonance, resulting in a distinctive, hollow "wow" sound at higher resonance settings. Roland referred to this as "gimmick" circuitry.
The instrument also features a 'simple' step-time method for entering note data into the 16-step programmable sequencer. This was notoriously difficult to use, and would often result in entering a different sequence than the one that had been intended. Some users also take advantage of a low voltage failure mode, wherein patterns that are programmed in memory get completely scrambled if the batteries are removed for a time.
There have been many modifications designed for the TB-303 such as the "Devilfish", "Acidlab" and "Borg" modifications. These generally provide additional parameters to the player, or offer alterations to the overall timbre.
[edit] Clones
Around the middle of the 1990s, demand for the TB-303 surged within the electronic dance music scene. As there were never many TB-303s to begin with, many small synthesizer companies cropped up and started to develop their own TB-303 hardware clones. This new wave of TB-303 clones began with a company called Novation Electronic Music Systems, who released their portable Bass Station keyboard in 1994. Many other TB-303 "clones" followed, including Future Retro's 777, Syntecno's TeeBee, Doepfer's MS-404, MAM MB33 , Freebass FB-383, Future Retro's Revolution, Acidlab Bassline, Acidcode ML-303, Oakley TM3030, Analogue Solutions Trans-Bass-Xpress and Will Systems MAB-303. As the popularity of these new TB-303 clones grew, Roland, the original TB-303 manufacturer, finally took notice and released their own TB-303 "clone" in 1996, the MC-303 Groovebox. Despite Roland's efforts, their new "303 clone" was an entirely new product that had almost nothing to do with the original TB-303, with the exception of a few bass samples and the familiar interface design. The most obvious difference was the inclusion of an inexpensive digital synthesizer, rather than the analog circuitry of the TB-303.
By 1997, software synthesizers were beginning to take hold among electronic musicians. One notable package was made by Propellerhead Software's emulator package entitled ReBirth. The software became very popular, providing a cheap and easy way for musicians to reproduce the classic TB-303, 808, and later 909 sounds, without the need for any synthesis hardware. Roland contacted Propellerhead to give the company an unofficial "thumbs up" which Propellerhead considered as the Roland "Seal of Approval" [2]. As of September 2005, support for ReBirth has been discontinued by Propellerhead software, and the software is now available online as a free download.
The Roland MC-202 MicroComposer is a monophonic analog synthesizer/sequencer released by Roland in 1983. Whilst not strictly a clone of the TB-303, it is closely associated. It is also similar to the SH-101 synthesizer, featuring one voltage-controlled oscillator with simultaneous saw and square/pulse-width waveforms and a resonant -24db filter.
A notable clone is the "Bass Line" plugin from AudioRealism. It supports both the VST and AU standards.
The most recent clone (better described as a replica rather than clone) is an open source do-it-yourself hardware solution called the x0xb0x, using most of the original components in the synthesizer section for a very authentic sound. The sequencer section differs from the original TB-303, adding support for MIDI and USB interfaces as well as an alternate event entry interface.
Native Instrument's flagship softsynth Massive also contains a filter modelled after that of the TB-303, allowing users to create their own realistic-sounding acid patches.
[edit] References
- ^ http://machines.hyperreal.org/manufacturers/Roland/TB-303/schematics/roland.TB-303.schem-5.gif
- ^ Propellerheads (2005). ""The Debut"". The Rebirth Museum. http://www.rebirthmuseum.com/history/part4.htm. Retrieved 2007-04-15.
[edit] External links
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Wikimedia Commons has media related to: Roland TB-303 |
- TB 303 Resource Index -
- TB303.info MIDI and Pattern File Resource -
- Nate Harrison's TB-303 Documentary - A free downladable video documentary about the TB-303 created by Nate Harrison.
- Proof That Adonis Invented Acid Note TX112 & TX113 The 1st 'Acid' Tracks
- TB303 Clones -> Audio comparison test. Hardware / Software -
