Bass reflex type speaker system duct having multiple sound paths

Details Bass reflex type speaker system duct having multiple sound paths Bass reflex type speaker system duct having multiple sound paths

1988-12-07

1990-06-12

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

181156, H04R 128

Patent

active

049339826

ABSTRACT:
A bass reflex type speaker system has a duct for transmitting sound waves. The duct is formed with a plurality of sound paths, and each of the sound paths has a unique length such that respective differences in the lengths of the sound paths cause destructive interference at particular frequencies. The interference occurs at a wavelength or wavelengths corresponding to the particular frequency or frequencies at which a local relative peak in sound level occurs due to leaking sound.

REFERENCES:
patent: 2880817 (1959-04-01), Burns et al.

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