Melodyne

Melodyne is a software that allows you to manipulate audio signals, especially a singer's vocals. Melodyne works with vocal and audio notes rather than waveforms to alter the modulation of vocals and musical instruments. The software allows individuals to edit and manipulate the pitch, duration, and length of notes, among other important technological features. 

Features:

• Free software for PC
• Time-stretching, rebuilding melodies
• Audio algorithms
• Pitch editing
• Unusual, irregular scales and tunings including exotic and experimental 
• Time editing
• Amplitude editing
• Work with multiple tracks
• Pitch analysis of speech (classical music)
• Assists in the creation of backing vocals extracted from an existing lead vocal
• Direct Note Access that allows manipulation within cords and recordings

Melodyne can be downloaded on a PC for free. It is rated as virus free. The program is developed to work on several Windows operating programs such as XP, Vista, 7, 8, or 10. There are other versions of Melodyne 4 such as Melodyne Essential, Melodyne Assistant, Melodyne Editor, and Melodyne Studio. In 2016, Direct Note Access, which allows independent manipulation of individual notes within chords and polyphonic recordings, was integrated into Melodyne 4 Studio. Melodyne Essential, Assistant, Editor, and Studio are not free but can be purchased online. There is a 30 day free trial for Melodyne 4 Studio available. 

One of the most prominent vocal tuners used by producers and artists

The software has won several awards, including the 2009 MIPA Award for Most Innovative Product and the Special Merit/Technical Grammy Award for its "contributions of outstanding technical significance to the recording field" at the 54th Grammy Awards.