PHYS 105 1nd Edition Lecture 30Outline of Last Lecture I. Subglottal Pressure Outline of Current Lecture II. Filtered SpeechIII. Synthesis of SpeechIV. Singing Current LectureI. Filtered Speech- Possible to achieve an acceptable level of articulation with a band-pass filter - Smallest passband is found at f0=1500 Hz- Intelligibility reaches 50% around 2000Hz, but very low intelligibility at low frequencies - Low pass filtero Low frequencies will pass through- High pass filter o High frequencies will pass through II. Synthesis of Speech- Christian Kratzenstein built models of the human vocal track that can produce vowel sounds - The hand can actively shape the resonator made by leather for phoneme production- Kagawa University- used an air pump; artificial vocal chords; a tunable resonance tube and a nasal cavity to represent human vocal organs- Modern talking machines use electronics rather than mechanical techniques - Two important characteristics of speech synthesis are naturalness and intelligibility - Computer system used for the production of human speech is called speech synthesizer - There are text-to-speech computer programs in almost all languages III. Singing These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- The fundamentals of human voices are roughly in the range of 80Hz to 1100Hz for normal male and female voices - Vocal Organo Lung, vocal folds, larynx, pharynx, nose and mouth cavities, lips and teeth- Sound Sourceo Air from lung is forced through the glottis and generates triangular wave form- Vocal Tracko
View Full Document
Unlocking...