KR100398551B1 - Reception performance estimating device for audio of vehicle - Google Patents

Abstract

The present invention relates to an apparatus for evaluating reception performance of audio mounted on a vehicle, the apparatus comprising: at least two comparative evaluation audio loaded on the vehicle; A camera that collects terrain conditions for the evaluation course that the vehicle travels; Broadcast field measuring means for measuring the strength of a signal received from a vehicular antenna while the vehicle is moving; An interface box which receives an acoustic signal output from the evaluation audio and splits the signal into two signals; First portable recording means for recording an acoustic signal of one of the evaluation audios; Second portable recording means for recording an audio signal of the other of the video signal of the camera and the evaluation audio; Third portable recording means for recording the measured value of the broadcast electric field measuring means; Analysis means for downloading, decoding and synchronizing the respective recorded contents into the first, second and third portable recording means; And display means for indicating the evaluation position analyzed by the analysis means, the broadcast intensity and the acoustic signal, and capable of quantitatively measuring and recording the audio reception performance, and performing the objective audio reception performance evaluation. Provide an evaluation device.

Description

Reception performance estimating device for audio of vehicle

The present invention relates to an apparatus for evaluating reception performance of audio mounted in a vehicle. More particularly, the apparatus may include at least two audios being loaded in a vehicle and traveling in a reception evaluation course, and the region information of the course, the received audio state, and the reception broadcast. The present invention relates to an audio reception performance evaluation apparatus capable of measuring, collecting, and visualizing intensity and the like.

In the conventional case, in order to compare and evaluate the reception performance of two audios, an evaluation vehicle equipped with one audio to be evaluated travels through a predetermined reception evaluation course, and the reception performance is evaluated by an evaluator in the evaluation vehicle. By repeating the evaluation, we compared and evaluated the reception performance of the two audios. Since the comparative evaluation of the reception performance depends on the hearing of the evaluator in the evaluation vehicle without using specific equipment, and the same evaluation is repeated, the evaluation of the reception performance on the individual audio is not objective and the number of evaluations is repeated accordingly. In addition, the evaluation criteria of the two audio to be compared are not constant, so subjective comparative evaluation by the evaluator is often performed.

In addition, since only the reception state of the audio is compared and evaluated, the performance comparison evaluation is not performed in consideration of the fact that the reception performance may be changed according to the terrain situation of the evaluation course and the change of the broadcast signal. Not suitable for use as an objective comparison.

In addition, since no specific equipment is used, only the reception performance of the audio is compared and evaluated, and it is difficult to analyze the problems of the evaluation audio based on the comparison evaluation data, and to check the reception status by time of the evaluation vehicle location. Since reproducibility is not guaranteed, there was a problem of being limited in evaluation time and evaluation items.

An object of the present invention for solving the above problems is to measure and record the terrain and broadcasting strength of the evaluation course without relying on the subjective evaluation of the evaluator to provide a material that can quantitatively and objectively evaluate the audio reception performance It is to provide an audio reception performance evaluation apparatus.

In addition, an object of the present invention is to provide a measurement and recording data as described above to compare the evaluation position information, broadcast strength and audio reception status at a time so that the evaluation of the reception performance is not only auditory but also quantitative comparison through visual. It is to provide a display device capable of doing so.

1 is an overall configuration diagram of an audio reception performance evaluation apparatus according to an embodiment of the present invention.

2 is a block diagram of a process of collecting measurement data by the audio reception performance evaluation apparatus according to an embodiment of the present invention.

3 is a display device of an audio reception performance evaluation apparatus according to an embodiment of the present invention.

In order to achieve the above object, the audio reception performance evaluation apparatus according to the present invention comprises at least two comparison evaluation audio on the vehicle; A camera for collecting a terrain situation for the evaluation course to which the vehicle moves; Broadcast field measuring means for measuring the strength of a signal received from a vehicular antenna while the vehicle is moving; An interface box that receives an acoustic signal output from the evaluation audio and splits the signal into two signals; First portable recording means for recording an acoustic signal of one of said evaluation audios; Second portable recording means for recording the other audio signal of the video signal of the camera and the evaluation audio; Third portable recording means for recording the measured value of the broadcast electric field measuring means; Analysis means for downloading, decoding and synchronizing the respective recorded contents into said first, second and third portable recording means; And display means for indicating the evaluation position analyzed by the analysis means, the strength of the broadcast, and the acoustic signal.

By such a configuration, the audio reception performance can be quantitatively measured and recorded, and thus, the objective audio reception performance comparison evaluation can be performed, and the number of evaluations can be reduced.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is an overall configuration diagram of an audio reception performance evaluation apparatus according to an embodiment of the present invention. As shown in FIG. 1, the audio reception performance evaluation apparatus 10 is loaded on an evaluation vehicle 11 to capture a terrain of an evaluation course, a camera 12, a first evaluation audio 13, and a second evaluation audio ( 14), a spectrum analyzer 15, a first digital recorder 16, a second digital recorder 17, and an analyzer 18, which measure the strength of the broadcast received between movements of the evaluation vehicle 11; All components except the analyzer 18 are loaded into the evaluation vehicle 11 to measure and record each necessary data while the evaluation vehicle 11 travels a predetermined evaluation course. The analyzer 18 downloads, decodes, dataizes, and synchronizes the measured and recorded data as described above, so that the performance of audio reception through each data can be evaluated. Hereinafter, a process of measuring and recording data by the audio reception performance evaluation apparatus 10 will be described in detail with reference to FIG. 2.

2 is a block diagram of a process of collecting measurement data by the audio reception performance evaluation apparatus according to an embodiment of the present invention. The first and second evaluation audio 13, 14 receive broadcasts from the antenna of the evaluation vehicle 11 while the evaluation vehicle 11 moves through a predetermined evaluation course, and at the same time, are loaded into the evaluation vehicle 11. The terrain of a predetermined evaluation course is photographed by the camera 12. The signals received from each of the evaluation audios are input to the interface box 19, which applies the input signal to the vehicle speaker so that the evaluator can hear it, and simultaneously measures and collects the input signal. Output to the first and second digital video decks 16, 17. The video information of the evaluation course is recorded from the camera 12 in the digital video deck 16, and the audio signal branched from the interface box 19 is recorded as the acoustic sample A. FIG. In the digital video deck 17, another audio signal branched from the interface box 19 is recorded as an acoustic sample B. In addition, the spectrum analyzer 15 of FIG. 1 measures the strength of the broadcast received while the evaluation vehicle 11 is moving and records it in a notebook not shown.

The measured, collected and recorded data as described above are all uploaded to the analyzer 18, and the analyzer 18 decodes and uploads the uploaded sound and image data, and synchronizes the electric field value of the broadcast with the sound and image data. Let's do it. In this way, the analyzer 18 evaluates the audio 13 and 14 based on the terrain information by the image data, the acoustic data received from the antenna of the evaluation vehicle 11 and the electric field strength value by the spectrum analyzer 15. It is possible to comparatively analyze the reception performance of and to visualize objective and objective comparative evaluation data to the evaluator by displaying it on the display device described below. Hereinafter, a display device displaying the content analyzed by the analyzer 18 will be described with reference to FIG. 3.

3 is a display device of an audio reception performance evaluation apparatus according to an embodiment of the present invention. The display device 20 includes an evaluation position display section 21, an acoustic display section 22 that shows a sound signal of the evaluation result in a spectrum, a broadcast intensity display section 23, and an evaluation vehicle history and evaluation date and time display section 24. The evaluation position display unit 21 reproduces and displays the record of the terrain and the evaluation situation for a predetermined evaluation course as image data photographed by the camera 12, thereby evaluating the evaluation situation so that it can be objectively evaluated instead of subjective evaluation. Provide it to the evaluator. The acoustic display unit 22 analyzes the acoustic signals of the noise reception sensitivity as the bar graph by analyzing the acoustic signals of the noise reception sensitivity with respect to the evaluation acoustic samples A and B, so that the evaluator can visually compare the evaluation acoustic samples as well as hearing. It can be judged more quantitatively and objectively. In addition, the acoustic signal can also be compared and evaluated acoustically by separating the R (sample A) and L (sample B) channels with respect to the evaluation acoustic sample using an amplifier or the like and using two or more headphones. The broadcast intensity display section 23 shows a bar graph of values measured by the spectrum analyzer 15 of the electric field intensity that changes with the position and time of the evaluation course, so that the evaluator can make a quantitative comparison with the evaluation acoustic samples. Can be.

According to the present invention, the evaluation course terrain information is collected by a camera, the evaluation acoustic samples are collected by two comparative evaluation audios, and the field strength of the broadcast intensity is collected by a spectrum analyzer, analyzed by an analyzer, and displayed on a display device. Thus, the evaluator can be provided with a quantitative and objective reception performance comparison evaluation data for the evaluation audio.

Further, according to the present invention, the data are recorded in the notebook and the portable recording devices, respectively, and thus are not limited to the comparative evaluation time, the comparative evaluation item, etc., and can reproduce the evaluation situation and the received sound, so that more detailed and sufficient comparison is possible. Evaluation can be done.

Further, according to the present invention, by evaluating audio reception performance by loading two or more comparative evaluation audios, the number of evaluations can be reduced, and comparative evaluations under the same conditions can be performed.

Further, according to the present invention, by measuring not only the reception state of the comparative evaluation audio but also the strength of a broadcast received by the evaluation audio, not only the comparison of the reception performance of the comparison evaluation audio itself but also the change in the electric field strength at each point. It is possible to determine the terrain dependence due to

Claims (1)

At least two comparative evaluation audio loaded on a vehicle; A camera for collecting a terrain situation for the evaluation course to which the vehicle moves; Broadcast field measuring means for measuring the strength of a signal received from a vehicular antenna while the vehicle is moving; An interface box that receives an acoustic signal output from the evaluation audio and splits the signal into two signals; First portable recording means for recording an acoustic signal of said evaluation audio; Second portable recording means for recording the video signal of the camera; Third portable recording means for recording the measured value of the broadcast electric field measuring means; Analysis means for receiving, decoding and synchronizing the contents recorded in the first, second and third portable recording means; And And display means for indicating an evaluation position analyzed by the analyzing means, a broadcast intensity, and an acoustic signal.