Ringabell AU v1.0

A Comb Filter & a Ring Modulator, both in the same App. 2 effects that I really love to use with any kind of audio source to create a Rhythmic pattern, to add an Electro side to a natural Drum, and sometimes also when I have no idea about what to do.
With Ringabell I have this, but much more than this because of the of the Comb & the Ring automation parameters. They add a new dimension to these 2 effects and new horizons to the user.
The Comb Filter comes with 3 rotating knobs. Time, Feedback and Mix. The Comb automation with an Order knob: Off, Sine, Saw Up, Saw Dawn, Triangle and Random. A Rate, a Min and a Max value knobs. These 2 last ones allow you to set the range in milliseconds.
Pause! I don’t know if you know what is exactly a Comb Filter effect… why Ringabell comes with an Order selection knob for the waveform, why the range values are set in milliseconds,
so, here a little description:
“A comb filter adds a delayed version of a signal to itself, causing the constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly spaced notches, giving the appearance of a comb.
Audio effects, including echo, flanging, and digital waveguide synthesis. For instance, if the delay is set to a few milliseconds, a comb filter can be used to model the effect of acoustic standing waves in a cylindrical cavity or in a vibrating string.”

Now the Ring Modulator: this time I will start wit a simple description.
A ring modulator multiplies two signals together to create two brand-new frequencies which are the sum and difference of the input frequencies.
So, in the Ring Modulator window, we have 3 rotating knobs. Speed, Depth and Shape. The shape will determinate the waveform of the new output signal: Cosine, Sawtooth, Square, Triangle or Noise. (Noise, it's great for a Ring Modulator...) The Ring Automation window is the same as the Comb one.
In summary: Ringabell is much more powerful than most of the Ring Modulator or Comb Filter that I have ever used in my life. Here you can create a lot of sounds, even an Arpeggio from any kind of input signal. What I really love is that it’s not a “Usine à gaz” in French, in English: a Gas Factory, which means that it’s not a complex App to use. The cherry on the cake: all Comb Filter effects can be used as a Flanger, the Rate here allows you to set it as a Tremolo too. A Killer App, a Must Have!

• Audio Unit / Stand Alone

Review by Ed

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