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Delay or high speed tape effects. Any app or tricks for that?
I'm searching for an app that can emulate very the sound you could achieve with old cassette players by holding the playhead against the tape while going for example fast foward. If there are no apps that this can do, maybe somebody knows a trick that can do this.

Comments
Any sample based app will do this
Playing the sample an octave higher will play the sample at double the speed (and pitch it up obviously) ...
2 octaves higher = 4x the speed etc.
Maybe add a little overdrive for more dirt
The idea is that is not continues the same speed, but that there's soemthing of of a startup and slowdown. But I will try your method. Thanks!
IVCS3 does this,
You can modulate the playback speed with an lfo or manual.
This sounds very tape like.
I did presets for this. There are some very "boards of Canada" sounding things hiding inside. Look for a preset called "tape beach".
Enjoy.
„iVCS3“ from apeSoft
https://appsto.re/de/3xDRN.i
check out lofionic Duplicat, cheap and cheerful AU tape effect
Speeding it up almost does it but it's not quite the same effect. Seems like with tape that when you FF with the play head engaged it sorta misses molecules or something. But yeah, thinking pitching is the closest you'll get on iOS. If you use something with a keyboard based sampler like Nanostudio, Beatmaker, etc, you can set the pitch bend range to something over 12 and then ramp up, leave it and then ramp back down for that stop and start effect. You might want to add a little bit of overdrive in the lower mids or use a dedicated tape emulator. Not aware of one on iOS (it's probably out there) but PSP vintage warmer in Auria would do the overdrive nicely.
I used a djay app years ago to do this. It had the virtual deck you spin with your finger and you could just hold it down to stop it and release it and it would speed back up. May have just been called 'djay'?
@AudioGus @syrupcore @Carnbot @lala
Thx for all the suggestions i will check them out. Probably will give lofionic Duplicat a try for the $0.99, iVCS3 sounds interesting but is at the moment a bit too expensive for me.
btw for those who use Ableton I found an interesting Reddit thread about tape effect emulations with all kind of tips & tricks and lots of links to free Ableton devices.
link:
https://www.reddit.com/r/abletonlive/comments/3ouzzc/tape_effect_plugin/
Didn't find exactly found the iOS app I looked for. Although I didn't try @lala trick with the iVCS. But as said this App is at the moment jst to expensive for me
But I found a ubercool and sensational free VST app called Scratch IT. Check out video below and download link is in the comment of the video.
FingerBeat
Would love to see complete emulation of reel to reel analog tape machine!
READ this stuff, people:
http://designingsound.org/2016/07/michel-chions-analog-tape-techniques/
For Tape Delay the Cubasis FX Pack is pretty nice!
AudioStretch Lite by Cognosonic Pte Ltd
https://appsto.re/gb/jM1KM.i
Yes