Year1
- 视频输入：
- HD-SDI1080P 4路BNC 1.0Vp-p 75ohm、1路VGA、1路HDMI
- 视频输出：
- 1路VGA、1路HDMI
- 编码格式：
- H.264High Profile
In addition to interrogation techniques, interrogation security and interrogation environment, the synchronized audio and video recording system of the procuratorate generally has to solve four technical problems: video, audio, transcript and seriousness of the conversation. That is: the video image must be clear, the audio effect must be fidelity, and the transcript file must be realistic and the environment setting must be majestic. However, in addition to the recording function, the seriousness of video, audio, and conversation and the comfort of the conversation room must be achieved with the help of interior decoration. For every conversation system, image, sound, and decoration (including the arrangement of desks and chairs and the display of other items) are three-in-one projects that are closely connected to form a whole to avoid the mismatch between sound, image, environment and the entire decoration, resulting in optical, acoustic, Blind spots in film and television prevent expensive equipment from producing good results.
. Indoor environment The temperature and humidity in the conversation room should be appropriate and a certain air flow rate and fresh air volume should be maintained to keep the interviewer in a good mental state in order to achieve a higher conversation effect. Normally, the temperature is kept at ～℃ in summer and at ～℃ in winter. The humidity is kept at %～% in summer and kept at %～% in winter. The air flow rate is kept at ./maintained at ./fresh air volume per person per hour in summer. The ambient noise level requirement is not greater than d.
. The indoor layout takes into account the seriousness of the interrogation and the imaging effect. The scenery and colors in the interrogation room as well as the tones of the tables and chairs must highlight the theme and serve the video. The soft packaging around the walls can be made of beige dado and the tables and chairs can be mainly brown. The ceiling can be made of milky white or silver gray. From the perspective of the majesty of the interview room and the video images captured by the camera, the overall decoration tone of the interrogation room should not be too fancy and it is not easy to have too many furnishings to prevent the overall effect from being affected by overly colorful colors.
. The indoor illumination of the light entering the room from the window (color temperature is approximately) is higher than that of fluorescent lamps or trichromatic lamps. If there are more than two light sources (natural light sources and artificial light sources) indoors, it will affect the imaging effect and cause a poor light-to-dark ratio. On the other hand, the interrogation time is random in the morning, noon, afternoon, cloudy day, and sunny day. The illumination and color temperature of the natural light source are different and the gap is large. Therefore, natural light sources should be avoided indoors and artificial light sources should be used. Therefore, indoor windows should be covered with dark curtains or decorated and closed. In order to achieve the imaging effect and conversation lighting needs, three primary color fluorescent lamps should be selected to control the illumination to the left and right. The selection and installation position of the lamps should be reasonable to avoid glare and large shadow areas.
. Sound processing: The entire conversation process is mainly based on language dialogue. The normal sound pressure level is between ~ d and the sound power is between ~ . The direct sound from the sound source is concentrated on the front and back of the case desk. In order to ensure the clarity and fidelity of the language and obtain good recording effects, the playback sound remains original without distortion. Generally, sound insulation and strong sound absorption are used for decoration to prevent outdoor noise from entering the room, control the indoor reverberation time within a range, and deal with sound diffusion to prevent sound focusing, sound coloring and sound standing wave phenomena. When choosing sound pickup monitors, omnidirectional active ones are the main ones.
Indoor exhaust system treatment The interrogation room is a small space with good sealing and isolation. During the decoration process, it is recommended to install silent air conditioning exhaust equipment in the room to prevent the noise generated from affecting the conversation effect and make the conversation more harmonious. The effect of being burned by the uneasy person talking is not that refreshing either.
Safety measures are to ensure the personal safety of the person being interviewed and avoid the occurrence of self-mutilation and suicidal behavior. There should be no dangerous tools or unsafe factors in the interrogation room. The power control switch should be installed outdoors along the wall and baseboard. Hazardous sources such as power sockets should not be installed. Conversation tables and chairs should be made of wooden materials and should not have obvious sharp angles. Door locks without door handles should be used and the doors open outwards. Make sure that the lighting lamp must be above a certain height and the power supply system must be equipped with an electric shock protector.
Shenzhen Shuntai Weicheng Technology Co., Ltd. is an interrogation equipment service provider integrating R&D, production, sales and service. Shuntai Weicheng is committed to the most advanced audio and video processing technology and continuous innovation around the needs of industry customers to provide customers with more competitive products and perfect services.
Contact person: Mr. Lu
Telephone:
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Company name: Shenzhen Shuntai Weicheng Technology Co., Ltd.
Company detailed address: Tangtou Avenue, Baoan District, Shenzhen City Baoan Small and Medium Enterprises Incubation Center Level
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