![]() It allows the user to get formant tracks and frequencies that make you sound like a particular vowel. ![]() This is a combination of what is known as the spectral vocoder and what is known as the vowel vocoder. Vowel VocoderĪ vowel vocoder creates what is known as formant tracks, meaning the user can change what vowels they like. This means the frequency bands determine what frequencies are heard. The spectral vocoder uses a bank of fast Fourier transforms to break down the input signal and uses parallel filters to form what is known as a spectral envelope. Classic VocoderĪ classic vocoder analyzes the input signal into 10 bands, then synthesizes the signal into another 10 bands. Vocoders can be divided into four categories: classic, vowel, formant, and spectral. In addition to changing what frequencies are heard, a vocoder can add or subtract frequencies to make partials that are not harmonically related to the original signal. When a user changes these volume levels, he changes what frequencies are heard. This is done by creating formants or “formant tracks” for speech or singing, which can be done by changing the volume of a harmonic tract. ![]() Like many other electronic music instruments, vocoders allow the user to change the harmonic content of the input signal. For this reason, it is also known as a voder and a voice encoder. ![]()
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