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2. Pitch shifting - Wikipedia

   en.wikipedia.org/wiki/Pitch_shifting

   For example, a pitch shifter set to increase the pitch by a fourth will raise each note three diatonic intervals above the notes actually played. Simple pitch shifters raise or lower the pitch by one or two octaves, while more sophisticated devices offer a range of interval alterations. Pitch shifters are included in most audio processors today.

3. Audio time stretching and pitch scaling - Wikipedia

   en.wikipedia.org/wiki/Audio_time_stretching_and...

   Pitch scaling is the opposite: the process of changing the pitch without affecting the speed. Pitch shift is pitch scaling implemented in an effects unit and intended for live performance. Pitch control is a simpler process which affects pitch and speed simultaneously by slowing down or speeding up a recording.

4. List of audio conversion software - Wikipedia

   en.wikipedia.org/wiki/List_of_audio_conversion...

   An audio conversion app (also known as an audio converter) transcodes one audio file format into another; for example, from FLAC into MP3. It may allow selection of encoding parameters for each of the output file to optimize its quality and size.

5. Audio converter - Wikipedia

   en.wikipedia.org/wiki/Audio_converter

   An audio converter is a software or hardware tool that converts audio files from one format to another. This process is often necessary when users encounter compatibility issues with different devices, applications, or platforms that support specific audio file formats.

6. Phase vocoder - Wikipedia

   en.wikipedia.org/wiki/Phase_vocoder

   The computer algorithm allows frequency-domain modifications to a digital sound file (typically time expansion/compression and pitch shifting). At the heart of the phase vocoder is the short-time Fourier transform (STFT), typically coded using fast Fourier transforms.

7. Effects unit - Wikipedia

   en.wikipedia.org/wiki/Effects_unit

   The first mass-market digital pitch shifter was the DigiTech Whammy, introduced in 1989. [99] It creates a "strange and artificial" sound, with distinctive "wobbly" artifacts . [ 100 ] [ 101 ] Its users include Jonny Greenwood and Ed O'Brien of Radiohead , [ 102 ] [ 103 ] Matt Bellamy of Muse , [ 104 ] Tom Morello of Rage Against the Machine ...

8. Freemake Audio Converter - Wikipedia

   en.wikipedia.org/wiki/Freemake_Audio_Converter

   Freemake Audio Converter features a batch audio conversion mode to convert multiple audio files simultaneously. The program can also combine multiple audio files into a single file. [ 3 ] The software includes several ready-made presets for each supported output file format and the ability to create a custom preset with the adjustment of ...

9. Sample-rate conversion - Wikipedia

   en.wikipedia.org/wiki/Sample-rate_conversion

   To convert a 24 frame/sec movie to 60 field/sec television, for example, alternate movie frames are shown 2 and 3 times, respectively. For 50 Hz systems such as PAL each frame is shown twice. Since 50 is not exactly 2×24, the movie will run 50/48 = 4% faster, and the audio pitch will be 4% higher, an effect known as PAL speed-up .