Such mal nach musicstudio, es gibt ne gratisversion, aber ich glaube der sampler ismt da nicht dabei.
Ich habe dir mal aus der hilfe den abschnitt über den sampler rauskopiert:
"The sampler's purpose is to create custom instruments or kits from existing audio files or from audio recordings. A few usage examples:
Sample another iOS app that supports AudioCopy: record a few notes in the other app, AudioCopy them and AudioPaste them into the sampler.
Create a kit consisting of vocal samples or noises that you record directly in the sampler with a microphone. Your sounds can be triggered with the drum pads.
Sample your guitar or bass by recording a few notes with an audio interface for iOS (e.g. Apogee Jam or iRig) or a microphone.
If you already have audio files or an instrument or a kit, you can transfer them into Music Studio and import them into the sampler. Many websites offer royalty-free samples. WAV, MP3, OGG, M4A and ZIP files can be directly opened from Safari or Mail with Music Studio.
Follow these steps to create an instrument:
Tap the User button in the Instruments screen.
Tap the + Button at the end of the list.
Enter a name and select the instrument or the kit icon, then tap OK.
Select a key which you want to assign a sample to. You can of course always move the sample to another key later.
For kits it is recommended to start at C2 and fill the keys upwards without gaps.
For instruments, it is vital that the key matches the sample's pitch. If you are going to record a high D, select D5 for example. If you are going to import an audio file that plays a low F, select F1 or F2.
Tap import or record to add a sample.
Repeat steps 4 and 5 for every sample that you want to add.
When you are finished adding the samples, tap the Auto Ranges button.
To test your instrument, switch to the Keyboard screen.
To edit a sample in the wave editor, double tap it.
Tap the Done button to exit the sampler and return to the instrument list.
Consider these guidelines to decide the number of samples to add to an instrument:
In theory you could only add 1 sample for the whole instrument. However, the sound quality suffers when you play a key that is far away from the base key on the keyboard. Depending on the instrument it is recommended to use a minimum of 1 sample every 2 octaves, or up to 3 samples per octave.
Consider the size of your samples. Smaller instruments load faster. Big instruments may not be loadable at all on older devices. You can see your instrument's size by selecting it in the Instruments folder in the Projects screen.
It is good practice to keep your instrument's size under 15mb. Adding samples, several seconds in length, for every single key is definitely too much. For a kit consisting of very short samples, having 5 octaves full of (60) samples is okay.
Keep in mind that a mono sample only takes up half the space of a stereo sample of the same length. Always cut your samples to the minimum length required."
Vielleicht hilft das.
gruß lando
edit: upps, ist ja schon etwas älter, nicht gesehen