1 / 26

專題研究 語音訊號處理專題

專題研究 語音訊號處理專題. 助教：余典翰 指導教授：李琳山. Outline. Acoustics ( 聲學 ) Phonetics ( 語音學 ) Useful Tools. Part 1. A coustics. Acoustics (1/4). Oscillogram ( 波形圖 ) Spectrogram ( 頻譜圖 ). Acoustics (2/4 ). Frequency hertz (Hz) Amplitude decibel (dB) Phase degree ( ∘ ). period. amplitude. phase.

helki
Télécharger la présentation

專題研究 語音訊號處理專題

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 專題研究語音訊號處理專題 助教：余典翰 指導教授：李琳山

  2. Outline • Acoustics (聲學) • Phonetics(語音學) • Useful Tools

  3. Part 1 Acoustics

  4. Acoustics(1/4) • Oscillogram(波形圖) • Spectrogram (頻譜圖)

  5. Acoustics(2/4) • Frequency • hertz (Hz) • Amplitude • decibel (dB) • Phase • degree (∘) period amplitude phase

  6. Acoustics(3/4) • F0 (fundamental frequency 基頻) • property of vocal fold(聲帶)vibration • pitch(音高) fundamental period

  7. Acoustics(4/4) • F1, F2, F3… (formant frequencies 共振頻率) • properties of vocal tract(聲道) • phone (音素) F3 F2 F1

  8. Part 2 Phonetics

  9. Phonetics(1/4) • Transcription • 語音符號 • Articulatory phonetics (speech production) • 語音發聲 • Acoustics phonetics • 語音聲學 • Auditory phonetics (speech perception) • 語音聽覺

  10. Phonetics(2/4) • Vowels • Monophthong(單母音) • Diphthong (雙母音)

  11. Phonetics(3/4) • Consonants • Voiced(濁音) • Unvoiced(清音) ╳ • Plosive/Stop (爆破音/塞音) • Fricative(擦音) • Affricate(塞擦音) • Nasal(鼻音)

  12. Phonetics(4/4) • IPA consonantsfor English

  13. Part 3 Useful Tools

  14. Useful Tools • Praat • http://www.fon.hum.uva.nl/praat/ • Wavesurfer • http://www.speech.kth.se/wavesurfer/index.html

  15. Praat (1/6)

  16. Praat(2/6) • Read from file (.wav)

  17. Praat(3/6) • Record mono sound (need microphone)

  18. Praat(4/6) • Record • Stop • Save to list

  19. Praat(5/6) • View & Edit

  20. Praat(6/6)

  21. Wavesurfer (1/4) • File/Open

  22. Wavesurfer(2/4) • Choose “Speech analysis” • Do NOT check “default” (next time will crash)

  23. Wavesurfer(3/4)

  24. Wavesurfer(4/4) • Right click and create other panes you need • Ex: power plot

  25. Summer Assignment • Use praat or wavesurfer to analyze a .wav file • Can you identify any phone by spectrogram? • What kind of vowels or consonants are there? • Can you recognize pitch and formants? • Try out more functions of these tools!

  26. Thank You Questions? r01942043@ntu.edu.tw

More Related