The document discusses the use of tone and pitch in speech. It notes that tone indicates the speaker's gender, age, and emotional state. It defines four levels of pitch - low, middle, high, and extra high. Tone can express emphasis for emotions like fear or surprise. Lines above or below words indicate the pitch or tone of the word - high, normal, or low. Tone usually changes between syllables but can also change within a syllable. There are two main intonation patterns - rising-falling and rising, which refer to the movement of pitch on the last accented syllable.