Resamplr vs AuTranspose

Resamplr is a fast, hardware-inspired sampler and beatmaking app for iPhone and iPad. Capture ideas quickly, shape them on a 4x4 pad workflow, and keep moving from sampling to sequencing to resampling without ever breaking flow. 2.0 turns Resamplr into a full workstation. Lay your beats and loops onto audio tracks with a proper timeline, record straight in through the mic or an audio interface, warp anything to tempo, and host your favourite AUv3 instruments and effects right inside the app. Load sounds from the built-in library, import your own files, or extract audio from video. Drop a loop in and it auto-warps to your project tempo at the right bar count — no manual correction. Record through the microphone or a connected audio interface with live input metering, threshold recording, and quick pad assignment. Chop samples non-destructively, build layered pads, tweak pitch, filters, envelopes, playback modes, and bus routing. Lock a pad's pitch independently of its speed with Sharp and Smooth timestretch modes, then sequence patterns with velocity, probability, ratchets, and live performance controls like 16 Levels and Roll. Scratch and perform on the deck, and when a pattern hits, resample it back to a pad and keep transforming it. Resamplr also includes flexible FX buses, output processing, song arrangement, project saving, skipback capture, a light/dark theme, and offline export for sequences, songs, audio tracks, or individual pads. Features: 4x4 pad sampler workflow built for fast beat making Audio tracks with a full timeline — record, arrange, loop, and trim clips Timestretch and keylock — independent pitch and tempo per pad, with Sharp and Smooth modes Auto-warp loops to tempo on import, at the right bar count Host third-party AUv3 instruments and effects Built-in sounds plus import from Files and video audio extraction Mic and audio interface recording with live meters and threshold capture Sample chopping, layering, trimming, and waveform editing Turntable-style deck for scratching and performance Pattern sequencing with velocity, probability, ratchets, and nudge Conditional trigs and polyrhythms / per-pad step lengths 16 Levels, Roll, resampling, and replay capture Bus FX, output processing, song mode, and WAV export Performance FX with automation per sequence and export Parameter locks per step, per sequence with export Effect automation MIDI in & out with fully custom mapping Audio Mixer to dial in your mix

AuTranspose is a simple pitch-shifting / transpose utility plugin with a range of +/- one octave in semitones, and a +/- 100 cents detune (semitone up or down). Please note that AuTranspose has audio latency (see the PLEASE READ section below) so it is not really suitable for realtime pitch shifting in situations where timing is critical - for example, shifting the pitch of an instrument as you play it or syncing multiple tracks in a live performance. AuTranspose is an AUv3 effects plugin that can run standalone, or in any AUv3 compatible host such as Logic Pro, GarageBand or AUM. AuTranspose currently runs on iPadOS / iOS (iPad & iPhone) and macOS (Intel & Silicon) and is available as a Universal Purchase from the Apple App Store. If you’re planning on using AuTranspose on Mac / desktop, please ensure that your favourite DAW / host supports AUv3 (not just AU). PLEASE READ THIS SECTION CAREFULLY! AuTranspose uses a pitch shifting technique that adds latency (delay) to the processed audio. Please note that this is unrelated to your audio interface buffer size or sample rate. The quality of the pitch conversion is a compromise between low latency or decent quality results - unfortunately, you can’t have both. AuTranspose can get as low as around 25ms latency which is just about good enough for a guitar octaver type application, but will probably sound a bit “wobbly” / “lo-fi” on more general audio. If you’re interested in a more guitar-centric octaver, please check out OttavaBassa which uses similar DSP, but tuned for guitar. AuTranspose does not report its latency to the host! This is by design. Instead, the current latency is shown on the UI in samples (and ms) so you can decide yourself if you need to compensate for it - for example, when remixing projects and you need to re-sync tracks that aren’t going through AuTranspose. So what is it for, and why did I make it? In my own search for a simple pitch shifter, I found that the really simple ones didn’t sound so good, and the ones that did produce good results were fairly complicated and / or CPU intensive. So I tried to make something that was very simple to use, that produced reasonable results. When might AuTranspose be useful? Backing tracks: You might want to transpose up or down by a semitone or two to put the song in a more comfortable key to sing, or perhaps you tune your guitar to Eb. In these situations, you could probably transpose the whole track up or down and it’ll still sound OK. The only other thing to keep in mind is that the playback of the track will be delayed by the latency so as long as the backing track doesn’t have to sync with anything else, you should be fine. Remixing recorded projects: Perhaps you have a project that’s audio only and you’ve decided it needs to be in a different key. You could use AuTranspose to pitch-shift the tracks or stems that need to be in key, but leave the percussion tracks as they are. You can then add a sample length delay (*) to these tracks so that everything plays in sync. For convenience AuTranspose reports the number of samples to adjust by. And of course, you could simply use AuTranspose as an effect in itself, for example as a “Lo-Fi” pitch shifter for a retro vibe. There are a few examples in the factory presets to get you started. (*) In cases where you need to compensate for latency on tracks that aren’t using AuTranspose, add a sample delay plugin to those tracks and set the number of samples to what’s reported on the AuTranspose UI. There are several sample delay plugins available, although many of the free ones (Apple’s included) don’t go that high. By the time you read this, MicroLag should be available which supports longer delay times.