CN201824948U

CN201824948U - Engine noise simulator

Info

Publication number: CN201824948U
Application number: CN2010202716390U
Authority: CN
Inventors: 李明江; 何铁平
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2011-05-11
Anticipated expiration: 2020-07-23

Abstract

The utility model provides an engine noise simulator which has low cost and is convenient to install. The engine noise simulator includes a player and a plurality of speakers connected with an output end of the player, and the sound output to each speaker from the player is the sound signal of the engine collected in the speaker fixing position in advance. The noise of the engine is collected in different positions in advance, and then the simpler common speakers and the player for supporting the external sound signal playing are combined and matched, so that the sound playback effect similar to a volume sound source is realized with lower cost. Each player is used for playing special sound, the engine noise simulating effect can be greatly improved, and the engine sound can be replayed really and steadily, so that the development on a sound adsorption and insulation system of a vehicle can be facilitated; moreover, the engine noise simulator can also be used on an electric vehicle, and play the sound in the silent working state of the electric vehicle, so as to attract attention of pedestrians and drivers of non-motor-driven vehicles, and improve the safety.

Description

A kind of motor noise analog machine

Technical field

The utility model belongs to field of automobile, specially refers to the device of simulation reconstruction motor noise.

Background technology

For dynamic assembly amplitude versus frequency characte instability (definite's such as suspension system) test vehicle, the checking of its sound absorption scheme generally needs all normal could the checking afterwards, and this can prolong time-to-market greatly.Can measure normal engine sound, and accurately stable carry out playback, can facilitate for the sound absorption measure developmental work of vehicle; Have higher comparative and confidence level but its accurate stable playback quality also can make to measure to contrast, thereby guarantee the validity of technical scheme.

Though traditional volume sound source sound-producing device is professional, price is higher, and single volume sound source also is difficult to reproduce accurately the sound of machinery space; Adopt a plurality of volume sound sources for true reappearance sound, not only costly, install and fix also very inconvenient.

The utility model content

The purpose of this utility model is to propose a kind of cost motor noise analog machine low, easy for installation.

Motor noise analog machine of the present utility model comprises player and a plurality of loud speakers of linking to each other with the player mouth, and the sound that player is exported to each loud speaker promptly is the aud. snl. of the driving engine that collected in advance in this loud speaker fixed position.

The utility model is gathered the noise of driving engine in advance at diverse location, the player that adopts simpler ventional loudspeakers then and support the external voice signal to play carries out combinations matches, with the original acoustic playback effect that realizes being similar to the volume sound source of lower one-tenth.By arranging each loud speaker to play specific sound, improved the effect of motor noise simulation greatly.

In order further to improve the effect of noise simulation, player can be for one or mouth parallel connection a plurality of, the sound that different player plays is different, and the mouth of player has frequency divider, can the sound of different frequency range be separated, described loud speaker comprises bass, middle pitch and high pitch loudspeaker, the special sound of playing a certain frequency range of each loud speaker, like this by different sounding sound sources is carried out the volume adjustment, being convenient to has the measure of developing more targetedly to the motor noise of different frequency, improve sound quality level in the car, and convenient simulation, the acoustic performance time-to-market shortened greatly.

For guaranteeing simulate effect, described loud speaker comprises two high pitch loudspeakers at least, two Squawkers and two bass speakers.

Described loud speaker is a vehicle-mounted loudspeaker, can utilize existing mobile unit, cost-cutting.

Motor noise analog machine simulate effect of the present utility model is good, cost is low, can truly, stably reproduce the sound of driving engine, make things convenient for the suction of vehicle, the exploitation of sound insulation system, can also be used on the electronlmobil in addition, under the noiseless mode of operation of battery-driven car, play, cause the attention of pedestrian and unpowered vehicle chaufeur, improve safety.

Description of drawings

Fig. 1 is the principle schematic of motor noise analog machine of the present utility model.

The specific embodiment

Describe the utility model in detail below in conjunction with specific embodiments and the drawings.

Embodiment 1:

As shown in Figure 1, the motor noise analog machine of present embodiment comprises a player and a plurality of loud speakers of linking to each other with the player mouth, and the sound that player is exported to each loud speaker promptly is the aud. snl. of the driving engine that collected in advance in this loud speaker fixed position.

Loud speaker is a vehicle-mounted loudspeaker, comprises two high pitch loudspeakers, two Squawkers and two bass speakers, and loud speaker gets final product onboard by simple fixed support is fixing.

Certainly, if in order to improve the effect of noise simulation, player still is a plurality of, the mouth of each player is in parallel to get final product, the sound that different player plays is different, and the mouth of player has frequency divider, can the sound of different frequency range be separated, the special sound of playing a certain frequency range of each loud speaker, by different sounding sound sources is carried out the volume adjustment, being convenient to has the measure of developing more targetedly to the motor noise of different frequency like this, improves sound quality level in the car, and the acoustic performance time-to-market is shortened in convenient simulation greatly.

Claims

1. motor noise analog machine, it is characterized in that comprising player and a plurality of loud speakers that link to each other with the player mouth, the sound that player is exported to each loud speaker promptly is the aud. snl. of the driving engine that collected in advance in this loud speaker fixed position.

2. motor noise analog machine according to claim 1 is characterized in that described player is a plurality of of or mouth parallel connection, and the mouth of player has frequency divider, and described loud speaker comprises bass, middle pitch and high pitch loudspeaker.

3. motor noise analog machine according to claim 1 and 2 is characterized in that described loud speaker comprises two high pitch loudspeakers, two Squawkers and two bass speakers.

4. motor noise analog machine according to claim 3 is characterized in that described loud speaker is a vehicle-mounted loudspeaker.