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Audio Signal Processing

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

Recording device and video device using the same

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Frequency response control circuit apparatus

In FIG. 1, an input signal is applied on lead 10 to the base of a PNP transistor generally ...

Crossover network for a multi-element electrostatic loudspeaker system

The present invention relates to an electrostatic speaker system having a plurality of driver ...

Crossover network for optimizing efficiency and improving response of loudspeaker system

Having described my invention, I claim: 1. In a loudspeaker system having low, midrange, and high ...

Design of crossover network for high fidelity speaker system

What is claimed is: 1. A high fidelity speaker system in combination with a filter network for ...

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The present invention has been developed in order to remove the above mentioned drawbacks inherent ...

Speaker distortion compensator

Methods and systems in accordance with the invention nullify or substantially eliminate the effects ...

Resistively damped loudspeaker system

In accordance with the invention, provision is made for electrical damping of the coils, capacitors ...

Audio system with amplifier and signal device

The present invention provides a sound system which is particularly adapted for use with such an ...

Correction circuit and method for improving the transient behavior of a two-way loudspeaker system

OF THE ILLUSTRATED EMBODIMENT Described herein are the transducers, correction circuits, a ...

Bass reflex type speaker system duct having multiple sound paths

Details

Inventors: Tanaka, Toshihiko;
Assignee: Pioneer Electronic Corporation (Tokyo, JP)
Primary Examiner: Ng; Jin F.
Assistant Examiner: McGeary, III; M. Nelson
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas

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.

DETAILED DESCRIPTION The present invention has been designed to prevent leakage of mid frequency sound from the duct to thereby improve the quality of sound emanating from the speaker.
To achieve the aforementioned purpose, a duct according to the invention is provided at an intermediate portion thereof with a plurality of sound routes of different lengths formed therein.

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