"Vocoder" Natural Recordings by Native Speakers
A vocoder is an electronic device that is used to transmit speech in situations where the quality of the speaker's voice is undesirable or needs to be changed, or to modify the timbre of the voice. It works by replacing the vocal tract of the speaker with a combination of steady tones or noise, typically in a series of pulse trains, to create an electronic representation of the original voice, known as an "excitation signal". The excitation signal and the original speech signal are then used to generate a new signal, or "synthesized speech", that mimics the original voice but with changes to pitch, tone, and other characteristics. Voders were originally used in telephone and radio transmission systems, but are now more commonly used in music and audio processing applications.
The quality of being boisterous and loud in expressing one's opinions or feelings; strong and insistent advocacy or criticism.