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[ Meow | Audio Editor ] Public Beta
UPDATE: Meow has been released!
https://forum.audiob.us/discussion/59926/meow-audio-editor-fast-precise-audio-editing
Hi all,
Meow is a simple and efficient audio and sample editor for quickly and easily getting general everyday audio and sample editing duties done.
It will be a universal app for iPad, iPhone, and probably soon Mac.
The first Public Beta is now available!
https://testflight.apple.com/join/8hrRo0m0
[has expired! Thanks for testing!]
Would love for people to participate and get lots of bug reports and suggestions!
The main focus of Meow is to provide a simple and efficient workflow. It doesn't have a ton of features, but the features that it does have should work great!
Full description below. A "Record" function is just being finished and will be available in the next Public Beta.
Thank you and have fun!
KEY FEATURES:
- Fast, smart and efficient navigation and selection with optional snapping to zero crossings
- Undo and Redo (number of steps depends on file size)
- Automatic Crossfades (adjustable length) for most editing operations
- Interactive adjustable fade-in / fade-out points with various curve shapes
- Nudging of selection start / end or playhead for fine-tuning the selection
- Touch and mouse input fully supported
- Hardware keyboard support with extensive keyboard shortcuts including in-app reference
- Smart AutoZoom to reduce the need for manual panning / zooming
- Clipboard with automatic resampling and rechanneling
- Tempo and time signature support for editing and snapping to bars or beats
- Resampling between any two supported sample rates (see below)
- Sample-accurate editing and playback exactly according to selection
- Seamless and sample-accurate looping playback of selection
SAMPLE PROCESSING:
- Editing: Cut, Copy, Paste (Insert / Mix / Replace)
- Processing: Gain, Normalize, Silence, Reverse, Invert
- Filters (with live preview): Lowpass, Highpass, Bandpass, Notch
- EQ (with live preview): Peaking, Low Shelf, High Shelf
- Channels: Make Mono / Make Stereo / Swap
- Supported sample rates: 96000, 48000, 44100, 22050, 11025, and 8000 Hz
- All processing done in 32-bit floating point
IMPORT:
- Supported formats: WAV, MP3, AIFF, MP4, AAC, ALAC (Apple Lossless). Note that very long audio files (> 20 minutes) are not supported.
- Import via Files or Drag & Drop
- Dropped files can be merged into existing audio (Insert / Mix / Replace)
EXPORT:
- Export to Files or Share directly from the app
- Supported formats: WAV (16-bit / 24-bit / 32-bit float), MP3 (adjustable bitrate)
LIMITATIONS:
- Editing very long audio files (> 20 minutes) may cause instability and limited Undo functionality, as all processing happens in memory (RAM).
- Editing very large files can result in slowdowns.
Comments
ADDENDUM: The current beta might display two ugly thin white lines if your device is in light mode. You can switch to dark mode if you like to fix this until the next beta.
@SevenSystems : DC Offset would be a useful process to add.
Cool! Does this include a browser / library similar to Audioshare for managing tracks and projects?
I agree! Maybe instead of a separate button / function, this could be done automatically in "Normalize"? (I doubt anyone would want to intentionally keep a DC offset...?)
No, you can import files via "Open" (opens the default system file browser) or Drag & Drop via Split View etc.!
Can one paste audio from the system clipboard to start a file?
No, the clipboard is currently internal to the app, but I have using the system clipboard on my list! Currently, you can either drag & drop or use "Open".
Incompatible hardware.
Won’t work on iPhone 6s aka last iPhone with a headphone Jack.
Twisted Wave works like a dream here.
Being able to get data into and out of the app via the system clipboard would enormously increase the app’s utility for me…making it a convenient adjunct to Loopy Pro
Can you give me more details? And what iOS version is your iPhone on?
iPhone 6s can’t go beyond iOS 15
OK. It's in the top 3 things to investigate for the first update after release!
Thanks. I don't have a device with iOS 15 to test, but I might just enable iOS 15 for the next beta and see if I see any problem reports!
@SevenSystems Here's a few initial observations
As for 'icon consistency' when one is 'zoomed in' quite a bit the brackets directly change the selection instead of moving the cursor to the start or end of the selection.
It would be nice to just long-tap-n-drag on the waveform to make rough selection, currently we have to move start and end markers to make a selection.
Toggling the snap on/off momentarily interrupts playback?
For 'gesture zooming' it needs a bit of attention...
When doing a 'vertical pinch' the waveform zoom behaves a bit weirdly (try to pinch vertically up/down), that gesture could be used to 'scale' the waveform on the Y-Axis instead of currently unpredictable waveform zoom.
If possible limit waveform zoom gesture to 'horizontal pinch'.
With 'Stage Manager' enabled (works really well under iPadOS17.3) scaling the window while a menu is open makes the open menu object fly all over the place
The 'auto zoom' does not always work if 'show all' has ben used, need to use the 'zoom selection' to get back the auto-zoom functionality.
I'll mess around more and post my findings here.
Cheers!
i totally agree about the need for tap and drag to start a selection. I use Twisted Wave sometimes solely because the ease of making a selection.
I feel like the ruler needs MUCH finer granularity of its labels with easily viewable tickmarks indicating meaningful subdivisions , and the granularity should increase as one zooms in.
I'd like to be able to calculate BPM from the selection by indicating how many beats are in the selection. If that option is already there, it isn't obvious how to access it. Imo, this is essential for a beats based timeline to really be useful.
A samples-based timeline would be cery useful, too.
Another feature I consider essential is a display (either in the main u.i. or a get info panel) of the precise numerical values of the playhead position and, selection start, end and duration....preferably with a way to edit them.
BUG
If i have loaded a file, I find that if i switch out of the app amd stay out for too long, when i return to the app, it reloads as if launched from scratch rather than reloading the audio (and restoring the selection).
OK, to avoid a potential misunderstanding:
The [ and ] handles are somewhat non-standard in their behaviour, but I actually found this to be quite useful and intuitive in practice once you know how they work.
Can you summarize again what you found confusing / what you would change?
Long-drag to select sounds like a good idea. When using a mouse, you can already do that.
Again, I found the way the [ and ] handles currently work a good compromise -- they allow for pretty quick and immediate precise selection, so I wasn't sure a coarse selection via touch directly in the waveform view is necessary. But I may change my mind!
Note that another very quick way to make coarse selections is to just play it, and then hit 'Select Played' in the bottom toolbar.
Yes, when you turn it on, it re-snaps the current selection to zero crossings, but it should definitely detect if nothing has changed and then not restart playback. Noted! Thanks
It currently takes the horizontal distance of the fingers... probably when you're trying to pinch vertically, your fingers get so close together (horizontally) that you reach an infinitesimally (SP?) small distance 😄 I will look into improving this.
Also, yes, vertical zooming doesn't seem like a bad idea and not too hard to add. I'll add this to the list. I haven't found many situations "in real life" where I actually had to zoom in vertically on audio waveforms, but maybe I do things oddly... is this an often needed feature?
Good catch! I will probably do the lazy thing and just close any open menus when the window size changes 😜
Auto Zoom needs some fine-tuning still. It might sometimes appear it's not working, but there's some "intelligent" (AI™ 😉) logic in the background that decides if it "makes sense" to auto-zoom or not... I first wanted to get some feedback and see if people find it useful in general, and then make adjustments based on feedback.
Thanks for all the input!
Just had a quick play and it’s lovely as expected. Those left/right handles at the bottom work so much better than trying to do it straight on the wav visualisation, and helps prevent accidentally moving them, which happened all the time to me in twisted wave.
The clipboard question was the first one that came into my head so glad that’s being investigated. After some thought I totally understand how making it easy to get audio in and out is probably better than making it auv3, especially with no need to save a file in the middle.
Drag and drop is great for iPad but not so good for iPhone, so copy and paste would be great.
I’m trying to think what apps I’ll be getting audio in and out of… loopy pro for sure, maybe the granulizer apps that accept samples. I’m sure there’s lots more. And Logic Pro on iPad obviously using the drag and drop functionality.
@SevenSystems : what TwistedWave does and is very touch friendly, is let you touch in the waveform to set the selection point. It essentially puts the draggable selection start and end glyphs where you tap. It is so much more friendly than the current behavior. This is especially important when you zoom in.
I often start my editing session by zooming in on the point of interest and feel that being able to tap to set the playhead (by tapping in the timeline) or the starting selection (by tapping in the waveform display). Bonus points if tap and drag in either area selects the dragged region.
OK, yes, @Samu has suggested the same, I'll look into it. However:
You can already tap anywhere in the waveform to set the playhead, unless I'm misunderstanding. Tapping in the ruler doesn't currently do anything useful, I agree that should probably also position the playhead...
EDIT: tapping on the ruler should already put the playhead there?
Another quick way to currently set a selection is to tap anywhere in the waveform, hit 'Play', and then hit 'Select Played' (bottom toolbar).
That's funny, you're saying the opposite of the others 😄 It looks like something that I wanted to avoid -- a preferences menu -- might be needed in the future!
Yes!
Yes, D&D is probably intended as the main mechanism to get audio into it -- it even offers you various options (New file / Insert / Replace / Mix)
Imo, it is much more friendly for touches on the waveform to be related to selection and touches in the timeline to set the playhead.
Yes, you can do that. But Iin my opinion, that is not a replacement for being able to tap in the waveform to set the insertion point.
Well I'd love to have quick navigation to the start and end of the selection without having to do 'menu diving'.
Maybe add the bracket icons to the toolbar at the bottom? "[" bracket to the left of "[sel]" and "]" to the right?
That would solve the 'confusion' for me.
Cheers!
Yes agree. Probably will look into providing something similar to Xequence when in 'Auto' Grid mode. i.e. when you zoom in further, each beat gets divided by 2, then again by 2, etc. (poor people with triplets though!)
That sounds good and actually straightforward. So just a button in the BPM menu "Get from selection" or something, rounding to maybe 0.5 BPM so you don't have to be extremely precise with your selection?
(in case you haven't found it (wouldn't be surprised, it's a bit hidden) -- the BPM menu appears when you tap on the playhead...)
How about when timeline is in 'Time' mode, just start showing samples instead of seconds when zoomed in very close?
OK noted! (out of curiosity, can you give me an example of when you would use this so I can understand the use cases better?)
That can happen when iOS kills the app, there's no full session restore yet. Did you have a very large audio file loaded?
OK, I wasn't sure if this feature is used often enough to deserve a "quick button" there. But I hear ya. I'll put those buttons there when space allows (i.e. at least a "normal" iPad in landscape without any split-screen shenenigans...)
@Samu oh btw. Do you think the zoom factor when using 'View to selection start/end' is useful? It currently zooms to +/- 50 ms.
Sounds like people are already asking for what I noticed; finer granularity in the ruler, and bpm calculated from selection - setting the zero point of the ruler to the start of your selection seems to be important in getting that process of setting the bpm to what you need it to get the snapping and grid division right at the moment…
Yes I totally agree and will try to squeeze those into the first release.
You can drag the ruler left/right to adjust the zero point!
I just thought I’d point that out in case anyone missed it 😇 (I was cursing like a trooper for a couple of minutes until I spotted that I could move it 😄)
No rounding at that granularity..unless there is an option to not. When making and refining a selection that loops perfectly, it is often necessary to have a really precise setting.
While samples mode is only useful when zoomed in, sometimes you need the milliseconds.
For example, I am relatively frequently making a selection and need to know how long it is...and sometimes I might need to move the playhead to a precise location and measure the distance (by making a selection) to the start or the end of a note.
The file was not large. Maybe 4 bars long.
For me it's useful as it leaves a bit of margin to move the start and end points.
If they were 'pinned to the side walls' one would have to 'zoom out' before being able to move them
Some space is needed so one can see what comes before the start and after the end of the selection when zoomed in and 50ms seems to be more than enough...
...but if possible it could retain the current zoom level and instead of re-scaling the view when selecting left or right locator.
(ie. when selecting the left or right locator center the locator on the screen and keep the current zoom level).
Cheers!