GoldWave can do:
• Play, edit, mix, and analyze audio
• Record audio from cassettes, vinyl records, radio, etc. through your computer's line-in
• Record dictation through a microphone or play dictation back at a slower speed for transcription
• Record and edit audio for podcasting
• Apply special effects, such as fade, equalizer, doppler, mechanize, echo, reverse, flanger, and more
• Digitally remaster and restore old recordings with noise reduction and pop/click filters
• Make perfect digital copies of audio CD tracks using the CD Reader tool and save them in wma, mp3, ogg files
• Edit music for dance programs, figure skating, gymnastics
• Analyze human speech, bird song, whale song
• Demonstrate digital signal processing with filter effects and the expression evaluator tool
• View a variety of real-time visuals and VU meters
• Convert files to/from different formats, such as wav, wma, mp3, ogg, aiff, au, vox and even raw binary data

General Features:
• Multiple Document Interface for working with many files in one session
• Huge file editing: 4GB and beyond (NTFS only)
• Configurable RAM or hard drive editing
• High quality: 24 bit, 192kHz
• Real-time visuals: bar, waveform, spectrogram, spectrum, VU meter, ...
• Fast non-destructive editing. Cut, copy, delete, and undo take only a fraction of a second, regardless of the file size
• Multiple undo levels
• Many effects: distortion, doppler, echo, filter, mechanize, offset, pan, volume shaping, invert, resample, equalizer, time warp, pitch, reverb, volume matcher, channel mixer, ...
• Effect previewing and presets
• Audio restoration filters: noise reduction, pop/plick, smoother
• Supported file formats (wav, mp3, ogg, aiff, au, vox, mat, snd, voc, raw binary data, text data, and more)
• File format plug-ins for the next generation of audio compression, such as WMA, Ogg Vorbis, and FLAC.
• DirectX Audio Plug-in hosting
• Effect chain editor
• Audio CD Reader
• Batch processing and conversion
• Drag-and-drop cue points, with auto-cue and file splitting features.
• Direct waveform editing with the mouse
• Customizable tool bars
• Customizable waveform colours
• Several built-in accessibility features and keyboard shortcuts

Note for Portable version:
1- GWAmp Plug-in Included
2- DirectX Plug-in Included
3- APEFile Plug-in Included
4- GWBPMCounter Plug-in Included
5- GWMPVisual Plug-in Included
6- QuickTime Alternative v3.2.2 Included
7- Enjoy!

Home Page - http://www.goldwave.com/