iVoxel is a powerful vocoder and synthesizer app for iPhone that offers a unique concept of turning the vocoder into a singing machine. Developed by Harry Gohs, iVoxel combines voice optimization with a Matrix vocoder from VirSyn, a renowned vocoder used by famous artists like Kraftwerk. The channel filters used in iVoxel are based on the Sennheiser Vocoder VSM201, resulting in a rich and fat analog sound characteristic.

With iVoxel, you can use it in various ways. You can use it as a real-time vocoder by talking into the microphone while playing tunes on the keyboard. The app allows you to change the sound character of your voice by adjusting aspects like pitch, gender, or breath noise. You can even sing over your favorite iTunes song using iVoxel.

Another great feature of iVoxel is the ability to record the analyzed spectrum of phrases and words from your own voice. You can then use these voxels to play with your own voice on the keyboard or with the built-in sequencer. The app comes with nearly 300 pre-recorded voxels to get you started.

iVoxel is also Audiobus compatible, meaning you can use it in the Input, Filter, and Output slots in the Audiobus signal chain. This allows you to feed the carrier signal and vocal signal from any Audiobus compatible apps.

Furthermore, iVoxel offers the option to record your creations to an audio file, which can be used with other apps and programs for further processing. You can also export/import projects and voxels, export audio recordings, upload recordings to SoundCloud, and even copy audio recordings to the clipboard.

Overall, iVoxel is a versatile and feature-rich vocoder and synthesizer app that offers a unique singing machine experience. Whether you're a musician, vocalist, or just someone who enjoys experimenting with vocal effects, iVoxel provides a wide range of possibilities for creative expression.