Show HN: SlideSynth

[amadeuspagel]

https://slidesynth.com

— Move touch up and down to change frequency, move touch left and right to change volume.

— Tap the logo to loop, tap again to stop looping, tap yet again to cancel the loop.

— Tap the waveform icons to change the waveform.

[me_bx]

The audio does not play on Firefox on linux, and the interactions don't seem to have any effect either.

Warning message in the console:

> An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page.

On Firefox / android, this works fine.

[Apreche → me_bx]

No Audio on Firefox/MacOS either.

[amadeuspagel → me_bx]

It's only for touchscreens.

[harel]

This is very cool. I like it that it can handle multiple touch points on my phone and play three notes if I touch with three fingers.

[recursive]

To get it to work, I have to drag it from a monitor to the laptop screen and then physically touch the screen. Seems like it should probably work with mouse too.

It looks super cool. Reminds me of old winamp plugins.

[amadeuspagel → recursive]

Yes, the visuals are from the same tradition as old winamp plugins: https://github.com/jberg/butterchurn

[efilife]

Add some attack and release to eliminate the pops when audio starts/stops playing

[amadeuspagel → efilife]

You can have something like attack and release by moving the finger from the right side to the left and back.

[efilife → amadeuspagel]

This is not what I mean, when the waveform cuts abruptly (oversimplification) it creates an unwanted mid-high end popping sound. I see that you are new in the world of audio, I would recommend reading about zero-crossings. A very sho0rt attack like 1ms would help

[jensenbox]

UI.svelte:36 The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://goo.gl/7K7WLu

Says Chrome on Linux

[amadeuspagel → jensenbox]

It's only for touchscreens.

[lancesells]

No sound on Safari/MacOS.

[Unknoob]

Does not work on Firefox/Windows 10.

[vivzkestrel]

how does it work?