A minimal chromatic tuner for iOS & macOS.

Related tags

Audio music macos swift ios watchos audiokit tuner swiftui
Overview

Zen Tuner

CI

A minimal chromatic tuner. Works well with any instrument, whether it's woodwinds, brass, strings or voice.

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Features

  • Beautiful, clean and simple interface
  • Large current note representation and a high marker that change from red to green when the note is in tune
  • One-touch menu to apply a transposition to easily tune all instruments
  • Tap the main note to adjust preference to prefer sharps or flats
  • Works well on all screen sizes and orientations, from the smallest iPhone to the largest iPad

Credits

License

MIT.

Comments
  • How to obtain ZenTuner

    How to obtain ZenTuner

    I'm assuming that there is a macOS version of this app. However, it doesn't seem to be available on the App Store from the UK. I'm quite comfortable cloning it in Git and building from source, but I cannot see any build instructions. Can you help? Thanks!

    opened by carlca 7
  • Smooth indicator movement

    Smooth indicator movement

    Is there a way to apply a "smoothing" factor to cause the note indicator to not jump around so much and just ease slowly into a new position?

    opened by daneal 4
  • Could there be a macos build?

    Could there be a macos build?

    Since there are so many apps using translations between ipad touch to macos trackpad, could this be built for x86_mac or universal binaries which includes the ARM macs too?

    opened by chetanpm 4
  • Microfone feedback too low

    Microfone feedback too low

    Hello, When I simulate the tuner I really need to play extremely loud in order to receive the note I am playing on the app. Do you know what is happening?

    opened by joaoparreira12 2
  • iOS: App stops updating after backgrounding

    iOS: App stops updating after backgrounding

    Steps to reproduce:

    1. Launch Zen Tuner
    2. Notice the current note, marker and pitch all update in real time
    3. Switch to another app, might require an app playing video (e.g. Twitter)
    4. Switch back to Zen Tuner
    5. Notice the current note, marker and pitch are all frozen at the previous values before backgrounding the app
    bug 
    opened by jpsim 1
  • Refactor PitchTracker to make it easier to use directly

    Refactor PitchTracker to make it easier to use directly

    This will be useful for upcoming pitch detection unit tests.

    • Add PitchTracker.defaultBufferSize
    • Discard 0 pitch values
    • Add amplitudeThreshold parameter to control what the threshold should be
    • Process AVAudioPCMBuffer from PitchTracker instead of raw UnsafeMutablePointer<Float> frames
    opened by jpsim 0
  • Fix launching with Siri

    Fix launching with Siri

    The app sometimes would launch and just not process any audio input.

    I found I was able to consistently reproduce this when launching the app via Siri: "Hey Siri, launch Zen Tuner".

    To fix this, I periodically check for the microphone access and then start the audio capture. I use an exponential backoff strategy so this happens as quickly as possible without over-taxing the system.

    As part of this change, Zen Tuner no longer stops the audio capture explicitly when backgrounding the app. The OS takes care of doing this automatically in my testing (iOS 16.2).

    opened by jpsim 0
  • Translate C to Swift

    Translate C to Swift

    Split the CMicrophonePitchTracker C module into new ZenFFT and ZenPTrack Swift modules.

    Not worth adopting until performance can be improved.

    This is ~10% slower than the C versions according to my testing:

    Benchmark 1: ./pitchbench-c
  Time (mean ± σ):     452.8 ms ±   6.3 ms    [User: 402.8 ms, System: 15.4 ms]
  Range (min … max):   441.5 ms … 471.6 ms    20 runs

Benchmark 2: ./pitchbench-swift
  Time (mean ± σ):     506.5 ms ±  14.6 ms    [User: 449.0 ms, System: 16.2 ms]
  Range (min … max):   491.3 ms … 555.9 ms    20 runs

Summary
  './pitchbench-c' ran
    1.12 ± 0.04 times faster than './pitchbench-swift'
    opened by jpsim 0
Releases(0.3.0)

  • 0.3.0(Dec 20, 2022)

    • iOS 15 and macOS 12 are now required.
    • Fixed an issue where the tuner would not process audio when launched in some conditions, such as when using Siri to launch the app.
    • The UI now dims when audio session is starting up to make it easier to know when when the tuner starts capturing audio.
    Source code(tar.gz)
    Source code(zip)

  • 0.2.2(Apr 12, 2022)

  • 0.2.1(Feb 23, 2022)

Owner
JP Simard
JP Simard
GitHub https://apps.apple.com/us/app/zen-tuner/id1550640624
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