Reforge - Waveform Editor

Reforge for iPad is the Swiss army knife for audio files on iPad. Edit the wave form directly just by touching it. Set selections to cut, copy and paste within files or even paste from another file. Set the selection to trim unwanted parts of your audio off.

Record right in the app. Zoom-in down to sample level.

Automate volume changes for fade in effects or remove unwanted clicks. Adjust stereo balance and set it to the far left channel for the beginning of the track continuously transferring over to the right channel for the end. Add stereo widening effects or bring it all to together to make is sound mono. Add high pass and low pass effects to start an intro, simulate a telephone conversation or just enhance your sound.
 
Use control markers to automate the effect levels. Add as many markers as you need by double tapping on the waveform. Move them around to generate the changes to the effect you need.

*** To improve your experience with the control markers, touch and hold the marker for about 0.5 seconds before dragging it. This will ensure you are not scrolling the wave form but actually moving the marker. ***

Currently supported effects
✦ Volume (automated)
✦ Stereo balance (automated)
✦ Stereo widening (automated)
✦ Low pass filter (automated)
✦ High pass filter (automated)
✦ Pitch change (freeze needed)
✦ Time change (freeze needed)

Portrait mode contains a help screen that explains each function in detail. Start using Reforge in portrait mode and every button you touch will be explained.
Once you feel more comfortable with using Reforge, flip to landscape mode where you have more area to view and interact with the wave form.

Import mp3, im4, aif files directly from emails into Reforge. If you receive an email with an attached mp3 file on your iPad, tap and hold the mp3 representation in the email app until the menu appears and then tap "open in Reforge"
This feature enables you to receive mp3, aif and im4 files via email directly on your iPad and audiocopy them over into other apps.
Use the iTunes FileSharing to upload your mp3, im4, aif and wav files.
Use the built in wifi server to upload music in mp3, im4, wav, aif format.
Use Audiocopy and Audiopaste (V1.2.1 with 12 file history and support for the General Pasteboard) to exchange music with other apps that support it. This enables you to interact with apps Audiopaste compatible apps as well as Beatmaker.

Import your music directly from your iPod library on your device, that includes podcasts.