Studying Acoustics at Salford Francis F. Li Acoustics Research - PowerPoint PPT Presentation

Studying Acoustics at Salford

Francis F. Li Acoustics Research Centre School of SEE

Why sound (acoustic) quality of these space matters? How sound quality can affect users and usability of the spaces?

Architectural, building, How to bring the background noise level down? room acoustics address the design, How to design a small space for recording or as a measurement, control room for critical listening? treatment of these acoustically critical How to make sure speech is intelligible in theatres, spaces. classrooms and through Tannoy in public places? What characteristics make a good sounding concert hall? (Content of this subject is a forever theme of acoustics will be delivered in several …..many more application senarios modules).

Superb concert hall Over 2000 people can hear a solo instrument purely acoustically: without amplification

Live Rooms 6

Small critical listening (control) rooms Ideas you can use in arranging your home recoding studio 7

Why should loudspeaks stay away from walls? • Comb filtering 8

Live-end and dead-end vs Non-environments

Headache of small listening rooms? Low Frequencies – Room Modes 100 Level (dB) • Audible effects 80 • Effects of damping and room dimensions 60 • Effects of changing loudspeaker and receiver positions 40 0 50 100 150 200 250 300 f (Hz)

• Room and architectural acoustics related subjects through Group Design Project Module (2 nd year). • Signal processing and machine learning (final year and MSc) So, My areas • Speech technology (research only) of teach and • Transducer design (loudspeaker and research microphone, but mostly loudspeaker) (final year and MSc)

Highly relevant and ubiquitous in everyday life. (you cannot close your ears!) Linking up physics, engineering and perception. My options: three nice features of (audible-band acoustics is human centred audio and acoustics!) acoustical engineering Long career span I look forward to seeing you next academic year.

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