Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

frekvens Screenshots

iPad

iPhone

About frekvens

Frekvens is a frequency shifter and delay effect. Unlike a pitch shifter all frequencies are shifted linearly and then fed back into itself using the stereo delay unit. The frequency shifting is achieved with single sideband modulation using a hilbert transform and an infinite impulse response filter for fast computations. Frekvens also comes with a high and low pass filter and a lfo for modulating the delay play head.

- frequency shifter
- high, low pass filter
- stereo delay
- core midi cc input
- audiobus
- inter app audio
- audio unit extension
- save, load

What's New in the Latest Version 1.3.13

Last updated on Jan 24, 2021

Old Versions

+++ Fixing issue with some devices that only process audio in mono.

Version History

1.3.13

Jan 24, 2021

+++ Fixing issue with some devices that only process audio in mono.

1.3.12

Aug 9, 2020

+++ Updating audio engine to improve IAA compatibility with iOS 12.4 and up.

1.3.11

Oct 25, 2019

+++ Adding fix for IAA audio issues starting in iOS 12.4.
+++ Updating popovers for iOS 13.
+++ Fixing colour issues for dark mode in iOS 13.
+++ Improving delay buffer scaling.

1.3.10

Feb 16, 2018

+++ Fixing AUv3 state saving issue.

1.3.9

Feb 7, 2018

+++ Fixing au parameter writable flag issue.
+++ Minor bug fixes.

1.3.8

Aug 2, 2017

+++ improving AUv3 experience with some hosts.

1.3.7

Feb 13, 2017

+++ Fixing 4800Hz sample rate buffer issue.

1.3.6

Feb 6, 2017

+++ Fixing AUv3 load issue in Garage Band.

1.3.5

Feb 3, 2017

+++ Fixing minor AUv3 bugs..

1.3.4

Aug 4, 2016

+++ Adding haQ speak n spell preset.

1.3.3

Jun 10, 2016

+++ Fixing occasional splash screen orientation quirk.
+++ Fixing midi channel settings bug.

1.3.2

Jun 1, 2016

+++ Improving filter stability.
+++ Fixing AUv3 UI/parameters connection issue seen by some.
+++ Fixing minor compressor quirk.
+++ Fixing core midi naming bug.

1.3.1

May 23, 2016

+++ Fixing AUv3 openGL frame buffer quirk.

1.3

May 20, 2016

+++ Adding Audio Unit Extension, run frekvens in your favourite host app.
+++ Adding Inter App Audio control panel.

1.2

Mar 15, 2016

+++ Updating audiobus to fix iPhone 6S issues.

1.1

Mar 2, 2016

+++ Adding landscape layout on iPad.
+++ Adding ability to start from inter app audio host.
+++ Adding Audiobus state saving.