CN203882496U

CN203882496U - Device for comparing sound-transmitting capabilities of subjects

Info

Publication number: CN203882496U
Application number: CN201420308291.6U
Authority: CN
Inventors: 李建荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-10
Filing date: 2014-06-10
Publication date: 2014-10-15
Anticipated expiration: 2024-06-10

Abstract

The utility model relates to a teaching aid, especially relates to a device for comparing sound-transmitting capabilities of subjects and aims to solve the problem that it is difficult to distinguish the sound-transmitting capabilities of the subjects by human ears in the prior art. The device for comparing the sound-transmitting capabilities of the subjects includes a sounding unit and a sound-receiving unit. The sounding unit includes an electronic sounding apparatus and a sounding diaphragm which is connected to the electronic sounding apparatus. The sound-receiving unit includes an earphone and a pickup diaphragm. A sound sounded by the electronic sounding apparatus is spread in a subject. The sounds heard from the earphone are different in volume in the situation that the subjects to be tested in different materials are equal in lengths so that sound-transmitting capabilities in different subjects can be very easily distinguished. The device is simple in structure, is easy to manufacture, is low in cost and is convenient to operate.

Description

A kind of relatively device of the transaudient ability of object

Technical field

The utility model relates to a kind of teaching aid, relates in particular to a kind of relatively device of the transaudient ability of object.

Background technology

As everyone knows, different objects is different to the transmission capacity of sound, i.e. the extent of deterioration difference of sound in different objects.But in teaching, especially on classroom, the transaudient ability of method comparison different objects is by experiment difficult to.In existing school science teaching material also layout the related content of different objects sound transmission ability, and design a grouping experiment, use tuning fork sounding, people's ear listens the method for distinguishing to compare the transaudient ability of 1 meter of long wooden rule, aluminium foil, cotton thread, nylon wire, and poor effect and comparability are not strong.

Utility model content

The utility model provides a kind of relatively device of the transaudient ability of object, is intended to solve people's ear in prior art and differentiates the poor problem of the transaudient ability of object.

In order to solve above technical matters, the utility model is achieved through the following technical solutions: a kind of relatively device of the transaudient ability of object, comprises pronunciation unit and radio reception unit; The pronunciation vibrating diaphragm that described pronunciation unit comprises electronic sound generator, is connected by wire with electronic sound generator; The pickup vibrating diaphragm that described radio reception unit comprises earphone, is connected with earphone.

Further, described radio reception unit also comprises loudspeaker, and described pickup vibrating diaphragm is connected with loudspeaker by wire, and described earphone is arranged on loudspeaker; Loudspeaker is installed, can be made electronic sound generator send less sound, can prevent that the outer sound that acoustical generator produces from disturbing, and is conducive to sound to compare.

Compared with prior art the utility model has the advantages that: the sound that adopts electronic sound generator to send is propagated in object, the object of tested different materials is the in the situation that of same length, the sound size of hearing from earphone is also different, thereby be easy to tell the size of sound transmission capacity in different objects, simple in structure, be easy to manufacture, cost is low, easy to operate.

Brief description of the drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Fig. 1 is structural representation of the present utility model.

Embodiment

Consult Fig. 1, a kind of relatively device of the transaudient ability of object, comprises pronunciation unit and radio reception unit; The pronunciation vibrating diaphragm 1 that described pronunciation unit comprises electronic sound generator 3, is connected by wire with electronic sound generator 3; The pickup vibrating diaphragm 2 that described radio reception unit comprises earphone 5, is connected with earphone 5; Described radio reception unit also comprises loudspeaker 4, and described pickup vibrating diaphragm 2 is connected with loudspeaker 4 by wire, and described earphone 5 is arranged on loudspeaker 4.

When use, the material of needs comparison is measured, pronunciation vibrating diaphragm 1 and pickup vibrating diaphragm 2 are placed on respectively on same object, make vibrating diaphragm 1 and pickup vibrating diaphragm 2 to maintain a certain distance, then put on earphone 5, open electronic sound generator 3; Then other material is carried out to identical step, pronunciation vibrating diaphragm 1 is identical all the time in the different blanking time intervals of measurement with pickup vibrating diaphragm 2, then sound size is compared, and can determine the size of different materials to sound transmission ability; Tested object can be solid, can be also liquids and gases.

The sound that adopts electronic sound generator to send is propagated in object, the object of tested different materials is the in the situation that of same length, the sound size of hearing from earphone is also different, thereby be easy to tell the size of sound transmission capacity in different objects, simple in structure, be easy to manufacture, cost is low, easy to operate.

The foregoing is only specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.

Claims

1. a device for the transaudient ability of comparison object, is characterized in that: comprise pronunciation unit and radio reception unit; The pronunciation vibrating diaphragm (1) that described pronunciation unit comprises electronic sound generator (3), is connected by wire with electronic sound generator (3); The pickup vibrating diaphragm (2) that described radio reception unit comprises earphone (5), is connected with earphone (5).

2. a kind of relatively device of the transaudient ability of object according to claim 1, it is characterized in that: described radio reception unit also comprises loudspeaker (4), described pickup vibrating diaphragm (2) is connected with loudspeaker (4) by wire, and described earphone (5) is arranged on loudspeaker (4).