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Shoom Synthesizer

By Yuri Turov

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Shoom is an expressive XY pad synthesizer. Or, more precisely, three identical synthesizers in one app. It is capable of playing any pitch in the audible range and doesn’t necessarily limit you to a particular scale. Nevertheless, if you do want to use scales, Shoom can deliver anything from common 12-tone equal tempered to xenharmonic and microtonal.

• Three independent synthesizers
• 20–20,000 Hz pitch range
• Slide freely or snap notes to scale with adjustable glide rate
• Set notes to infinite hold using a dedicated toggle
• Microtonal and non-octave repeating scales support
• MIDI CC control and clock sync (MIDI note input coming in a later update)
• Inter-App Audio, Audiobus 2 support
• 60+ bundled presets
• Import and export of presets and CC maps

Synthesizer engine features:
• Adjustable polyphony, up to 30 voices
• Two oscillators with 4 waveforms and PWM, and one noise generator
• Oscillator FM cross-modulation
• 4 pole (24 dB/octave) resonant low pass filter with overdrive and pitch tracking
• 2 variable slope ADSR envelopes for amplitude and filter cutoff
• 2 LFOs with 9 waveforms, up to 3 out of 12 simultaneously assignable parameters, trigger and global running modes, fade-in and phase controls
• Y axis position as modulation source with up to 3 of 15 simultaneously assignable parameters
• Note pan randomizer
• Built-in stereo delay and reverb effects

iPad Screenshots

iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4

Customer Reviews

Highly Performable

Here's the thing about Shoom's not the most powerful whiz-bang, gizmo synthesizer ever created for the iPad. It has no 900 watt, voltage controlled, multi-mode flagging delay timber-shifting filter, highly complex modulation routing scheme, modular-synth aspirations or anything particularly inovative. It's actually a pretty simple, straight ahead instrument (actually THREE instruments, more on that later). Instead it has a conventional two-VCO, VCF, VCA voice path, a couple of ADSR envelope generators, a couple of LFOs, a VCA, delay and reverb. Pretty pedestrian by today's standard. So what makes this application so powerful, you might ask. Two things.

First, the fact is it is highly performable. Everything is simple, direct and easily accessible and the layout strongly encourages interaction with its simple parts which, when combined, create something far greater than the sum of its parts.

Under the hood, there are actually THREE identical synthesizers at work here and all three of them, while separately accessible are played from the same surface - color coded so you can keep track of what is going on on all three instruments. Switching between and controlling all three instruments is about as simple as it can be. Everything works as you would expect if you are experienced with just about any conventional keyboard synthesizer made in the last 40 years or so. The mod ranges are deep, which is GREAT. For example, you can really warp a VCO when you modulate it with an FM oscillator that sweeps 10 octaves!

Any set up of the three synthesizers can be saved as a "session". Switching between sessions is instantaneous with no glitches. The sounds just ...change. Period. That is great for live performance and improvisation. Tuning systems and scales can also be freely selected and are stored with the session.

Finally, Shoom just flat sounds GREAT. The audio quality is powerful, strong, clear and clean. Digital artifacts appear only in the near-supersonic range. So just about any patch comes off sounding as good as a high-quality hardware analog system.

Hopefully the future holds some more advanced features and gizmos like a sequencer or arpegiator and maybe some more modulators (even just a couple more LFOs would be great), an additional effect or two and modulation routing (currently quite good) will be expanded even further.

Overall, Shoom is a great sounding, highly interactive and playable synthezier despite it's conceptual simplicity. I really like it because it's design strongly encourages interactive creativity and live improvisation work. So ...get it.


So magnificently strange and beautiful.

There's no way this app was designed by any species originating in this backwater galaxy.

This had to be conjured as a new hybrid sonic tool by a higher life form so that we might eventually learn to communicate in unimaginable frequencies.

Shoom is brilliant!

Shoom is an immediate favorite app of mine. Coming from the developer of the excellent Xynthiszr, Shoom fills a major need in the iOS music world. Shoom will now replace the (sadly abandoned) Dr. OM, NoiseMusick and Droneo apps in my arsena;.

Shoom is incredibly good at creating drones. With its three oscillators, you can make some long drones with space for some soaring spaced-out leads on top. The sound pallette available is remarkable, and programming is a breeze.

This app will appeal to those who may not have a breadth of knowledge when it comes to sound synthesis, as the presets alone are immediately playable. But, if you know your way around programming oscillators, filter envelopes, etc., then Shoom will be even more excellent.

I can't recommend this app enough!

Shoom Synthesizer
View in iTunes
  • $9.99
  • Category: Music
  • Released:
  • Version: 1.0
  • Size: 19.1 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPad.

Customer Ratings

Current Version: