See the features

• Powerful audio recording feature
• Edit audio files visually
• Apply various effects easily
• Powerful noise reduction tool
• Easy to use interface will get you started editing in just minutes
• Real-time effect preview is supported
• Easy to use bookmark and region manager
• Supports a number of file formats including wav (multiple codecs), mp3, wma, ogg and many more.
• Burn your sound files to CD
• Tools include speech synthesis (text-to-speech)
• Completely Free!
• Batch processing
• Includes its own CD ripper
• Tools include spectral analysis (FFT) and speech synthesis (text-to-speech)

Read more here

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