SOUND REPRODUCTION COLLECTION DEVICE AND SPEECH RECOGNITION SPEAKER DEVICE

摘要

To provide a sound reproduction collection device which prevents the occurrence of a case of difficulty in speech recognition by suppressing acoustic coupling from growing large, even when a cabinet where an electrodynamic speaker and a microphone are attached is relatively small, and which is provided with low frequency sound reproduction capability required as a compact speaker system.SOLUTION: In the sound reproduction collection device, a cabinet includes at least one duct or passive radiator for radiating a sound to the outside space side that is derived by restricting an acoustic mass that resonates with an acoustic capacity in an internal space and inverting the phase, with a microphone, the duct or passive radiator, and an electrodynamic speaker attached to the cabinet in such a way that a first distance on the outer shell surface of the cabinet that defines a clearance between the microphone and the duct or passive radiator is shorter than a second distance that defines a clearance between the microphone and the electrodynamic speaker.SELECTED DRAWING: Figure 2