31. Indeed, much of Quayle's stump speech sounds downright Clintonian. 32. What he ended up with was a spectrogram _ an electronic tracing of speech sounds . 33. Acoustic phonetics is a subfield of phonetics which deals with acoustic aspects of speech sounds . 34. The software responds by mixing, looping and otherwise altering the speech sounds and corresponding images. 35. Articulation disorders have a motoric basis that result in difficulties to pronounce several speech sounds . 36. An ideal spelling system matches letters to speech sounds . 37. One is understanding the alphabetic principle _ the relationship between written letters and speech sounds . 38. DSP often makes recorded speech sound less natural. 39. A possible solution : use a real person's voice to make the speech sound more natural. 40. It also differs from the tradition of considering speech sounds to be the signifiers of speech signs.