I'm responding to this response as the original message didn't show up in my inbox.
There's more to the sound than just the Autotuned or pitch-shifted signal. To make the 'phasey' sound the pitch-shifted and original signal are mixed together, and the result is a lot like the sound out of a phasor or flanger (two different but related effects), which works very similarly - the original signal is either phase-shifted (through several "all-pass" filter stages) or delayed by a short period (roughly 0.1 to 20mS), and the original signal is mixed in. The mixing of the phase shift or delay with the original signal causes various comb filter effects, and apparently a frequency shift does this too. This use of Autotune/pitch correction does sound remarkably like a vocoder effect, but there's no real connection between the way they are generated. The popular 1990s Cher song "Believe" uses this sound that many people point to as evidence that Cher's singing was autotuned, but the engineers and producers of the song denied it and claimed it was a vocoder being switched in and out. On Tue, Jan 15, 2019 at 2:31 PM robert bristow-johnson <r...@audioimagination.com> wrote: > > > Do you mean that the use of autotune to quantization pitch to hard, > non-vibrato notes? > > > -- > r b-j r...@audioimagination.com > > "Imagination is more important than knowledge." > > > > > > -------- Original message -------- > From: David Reaves <rrsou...@aol.com> > Date: 1/15/2019 11:05 AM (GMT-08:00) > To: email@example.com > Cc: Reaves David <rrsou...@aol.com> > Subject: [music-dsp] Auto-tune sounds like vocoder > > I’m wondering about why the ever-prevalent auto-tune effect in much of > today's (cough!) music (cough!) seems, to my ears, to have such a vocoder-y > sound to it. > Are the two effects related? > > Just curious. > David Reaves > _______________________________________________ > dupswapdrop: music-dsp mailing list > firstname.lastname@example.org > https://lists.columbia.edu/mailman/listinfo/music-dsp > _______________________________________________ > dupswapdrop: music-dsp mailing list > email@example.com > https://lists.columbia.edu/mailman/listinfo/music-dsp _______________________________________________ dupswapdrop: music-dsp mailing list firstname.lastname@example.org https://lists.columbia.edu/mailman/listinfo/music-dsp