LING 15 Lecture Notes - Lecture 28: Sine Wave, Musical Tone, Formant
Document Summary
Complex sound/waveform (complexity): waveforms are complex; many waveforms interacting (dense lines like a heartbeat); simple one is sine wave. Spectrogram gives more info than waveforms; 2 diff ways of looking at same thing (sound) Lighter color = higher pitch = higher frequency. Dark bands = formants; resonant frequency (amplify each other) Waveform shows frequency and amplitude over time. Vibration: vibrate voice box (voiced sounds); consonants can be (cid:448)oi(cid:272)eless or (cid:448)oi(cid:272)ed (cid:271)o(cid:454)ed (cid:894)feel (cid:448)i(cid:271)ratio(cid:374) (cid:449)ith (cid:858)(cid:271)(cid:859) (cid:271)ut (cid:374)ot (cid:858)p(cid:859)(cid:895) Pitch: directly related to frequency; lower frequency = lower pitch & vice versa. Turbulence: non-cyclic or non-periodic sound; noise; static. Non-patterned sound; sounds like [s] [f] [z]- all fricatives. Sine wave pure tone bc not messy; tuning forks play periodic sound; create non complex waveform. Co(cid:373)ple(cid:454) (cid:449)a(cid:448)es do(cid:374)(cid:859)t sou(cid:374)d like pure to(cid:374)es. Not a lot of formants = fricatives; can see formants = vowels (& voice (cid:272)o(cid:374)so(cid:374)a(cid:374)ts or (cid:858)(cid:455)(cid:859) a(cid:374)d (cid:858)(cid:449)(cid:859)(cid:895)
