Hi,

anyone can explain this to me ?

cannot find a decent explanation in google nor youtube

thanks

talkbox is manipulating the physical vibrations of air with the resonant qualities of the mouth/throat.

vocoder is using a bank of bandpass filters to get the volume of specific frequency bands by passing them through an envelope follower, and then using the values of those envelope followers to multiply the output of another bandpass filter bank that's filtering another sound. In this way, the spectral profile of one sound is "pasted" onto another.

sometimes a fast fourier transform is used for this, which can be thought of as a bank of (fft length/2) bandpass filters when each bin of the fft of the carrier is multiplied by each bin of the "filter" signal

Similarly, a talkbox can be thought as passing a signal through a filter characterized by the resonant properties of the mouth/throat. That's how the talkbox "stamps" the spectral profile of the voice onto the "carrier" sound.

thanks but what's the difference with timber pasting then ?

@phil123456 timbre pasting is just whenever the spectral envelope from one sound is applied to another. i haven't heard it used to refer to using a talkbox, mainly just vocoders. but really both are a type of "timbre pasting".

The term's generally not used for talkbox bc talkbox is generally only used for "timbre pasting" a voice, whereas vocoders can timbre paste any 2 signals.

OT: another "timbre paste" device for voice:

thanks for the explanations