With the improvement of people's pursuit of quality of life, the new product of silent cabin has gradually entered people's field of vision. A silent cabin is a device that can provide a quiet environment, and is widely used in libraries, offices, laboratories and other places where you need to focus on work or study. The sound equipment in the silent cabin is an important tool to test its sound insulation. This article will introduce in detail the test sound insulation effect of the silent cabin acoustic.
1. Types of audio for silent cabins.
Silent cabin audio is mainly divided into two categories: active audio and passive audio. The active speaker has a power amplifier inside, which can directly lead to audio signals; Passive speakers, on the other hand, need to be driven by external amplifiers. In silent cabins, passive sound is usually used in order to achieve better sound insulation.
Second, the method of testing the sound insulation effect.
1.Subjective evaluation method.
The subjective evaluation method is to evaluate the sound quality and sound insulation effect of the sound through the subjective feelings of the person. The specific operation method is to place the subject in a silent cabin, ** different types and different loudness of audio signals, and let the subject evaluate the sound quality and sound insulation effect of the audio. The results of this method are greatly influenced by individual differences, but it can truly reflect people's subjective perception of sound.
2.Objective evaluation method.
The objective evaluation method is to evaluate the sound quality and sound insulation effect of the sound by measuring and analyzing various physical parameters of the sound. The specific operation method is to evaluate the performance of the sound by measuring the frequency response, signal-to-noise ratio, dynamic range and other parameters of the sound, as well as analyzing the spectrum and waveform of the sound. The results of this method are more objective, but they require specialized equipment and personnel to perform the test.
3. Analysis of test results.
From the analysis of the test results, the following conclusions can be drawn:
1.The sound insulation of the silent cabin has a lot to do with the sound equipment used. When choosing a silent cabin speaker, passive sound should be given priority, because its performance is more stable and can better restore the authenticity of the sound.
2.The subjective evaluation method and the objective evaluation method have their own advantages and disadvantages, and should be used in combination in the actual test. The subjective evaluation method can truly reflect people's subjective feelings about sound, but the results are greatly affected by individual differences. The results of the objective evaluation method are more objective, but they require professional equipment and personnel to conduct the test. By combining the two methods, it is possible to evaluate the performance of the sound more comprehensively.
3.In actual use, in order to achieve a better sound insulation effect, the position and angle of the sound should be reasonably adjusted. At the same time, it is also necessary to pay attention to controlling the volume to avoid too much or too little to affect the sound insulation effect.
IV. Conclusions. Through a detailed introduction to the test sound insulation effect of the silent cabin audio, we can draw the following conclusions: when selecting and using the silent cabin audio, its performance and characteristics should be comprehensively considered, and appropriate methods should be used to test and analyze it. Only in this way can we ensure that the environment in the silent cabin is more comfortable and quiet, and meet the needs of people's learning and work.