Djs looking for a free audio filter app to run their rig through need not look further. Hook your microphone up to pass through various types of digital audio filters before going to speaker or headphones. Design digital audio filters by touch. Select from a variety of filters and set cut-off frequency and rolloff or stopband level. You can use this effect as a live performance tool on your iPhone iPod Touch or iPad. For processing the microphone, you’ll need a direct connection via audio interface or Y-Adapter to avoid feedback noise.
Current free version allows design of Butterworth, Chebyshev, Remez, and Maxflat subband filter types for low-pass filtering in addition to a simple notch filters such as 50 Hertz Notch.
In App purchase allows upgrade to use more filter types as well as enabling band-pass and high-pass filters. In addition background processing of audio is enabled.
What’s New in Version 1.37
Add (free) Audio Effects from AudioEffects App.
These include, speed (for iTunes library tracks), L-R, echo, tremelo, reverb, etc
Older effects now part of Filters tab
More bug fixes.
Background audio works for iTunes without upgrade
Remove some splash screens to reduce app size
Audio Filter is available for free
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