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Speech Information Processing Lab
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This lab explores the mechanisms of human communication through speech.
AboutAbout the lab
Exploring the human ability to speak through speech production and perception
Professor Tokihiko Kaburagi conducts research to clarify more fundamentally the abilities humans use in communicating by speech.
The lab investigates how speech is produced when speaking, how it is perceived when listening, and how the two depend on each other.
The professor teaches courses on phonetics, speech signal processing, and speech information processing at both the undergraduate and graduate levels.
Key terms
- Articulators
- Parts such as the jaw, lips, and tongue that change the shape of the mouth when speaking
- Glottal waveform
- The sound source of voiced sounds, produced by the vibration of the vocal folds
- Inverse estimation
- Estimating, from completed speech, the glottal waveform it originated from
ResearchResearch themes
Communication by speech is the most fundamental means of conveying information for humans. The lab investigates the mechanisms of speech production on the speaker's side, the mechanisms of speech perception on the listener's side, and the interdependence between them.
Movements of the articulators during speech
The lab uses a magnetic sensor system to observe the movements of articulators such as the jaw, lips, and tongue, which control the shape of the mouth during speech. The aim is to identify the function of these movements.
How the glottal waveform is generated
The lab works to elucidate the physical mechanism by which vocal fold vibration generates the glottal waveform, the sound source of voiced sounds.
*Illustrative imageEstimating the glottal waveform from speech
Based on signal processing methods, the lab studies ways to inversely estimate the glottal waveform from speech.
*Illustrative imageSpeech synthesis based on the mechanism of speech production
The lab studies speech synthesis methods based on the mechanism of human speech production.
MembersFaculty
- ProfessorTokihiko Kaburagi
VoicesStudent voices
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Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Speech Information Processing Lab
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Speech Science LabSchool of Design, Department of DesignSpeech scienceThe information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Tracto vocal” Itsnaaav / CC BY-SA 4.0 (cropped)
- Estimating the glottal waveform from speech: “Condenser Microphone with Pop Filter and Reflection Filter” Tim Sheerman-Chase / CC BY 2.0 (cropped)
- Speech synthesis based on the mechanism of speech production: “DECtalk DCT01 and Tink” Emgaol / CC BY 3.0 (cropped)
- Related lab (Speech Information Processing Lab (Tokihiko Kaburagi)): “Petra, People in conversation, Jordan” Vyacheslav Argenberg / CC BY 4.0 (cropped)
- Related lab (Auditory Information Processing Lab): “Auditory system - Inner ear -- Smart-Servier” Laboratoires Servier / CC BY-SA 3.0 (cropped)
- Related lab (Auditory Information Processing Lab): “Auditory system - Organ of Corti -- Smart-Servier” Laboratoires Servier / CC BY-SA 3.0 (cropped)
- Related lab (Speech Science Lab): “Human Larynx Model ( )” YVC Biology Department / CC BY 2.0 (cropped)
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