What are the definition and description of home theater?
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The "home theater standard" consists of the "General Specification for Surround Sound Amplifiers for Home Theater" and "General Specification for Combined Loudspeaker System for Home Theater". The implementation of the two regulations marked the end of the previous situation in China where there was no industry standard for home theater products.
Home theater This standard specifies the technical requirements, test methods, quality assessment procedures, logos, packaging, transportation, and storage of home theater surround sound amplifiers and combination speakers. This standard is based on home theaters. The technical features of the product are formulated, and related technical requirements are referenced to other relevant national standards and industry standards. According to the requirements of the home theater product quality assessment, the technical requirements include frequency coverage, maximum output noise voltage, and other performance indicators. The definition of a home theater system is specified in the “General Specification for Surround Sound Amplifiers for Home Theater†and it is clearly stated that only surround sound amplifiers (or surround sound decoders and multi-channel audio power amplifiers) and multiple (more than 4) Speaker systems, large-screen televisions (or projection televisions), and high-quality A/V programming sources can only be called home theater systems with home audio-visual systems with surround sound theater audio-visual effects.
In addition to international well-known brands, domestic home theaters also have some emerging brands such as Tianxiang Electroacoustic (HVENSOO), TuoKeKe (tvc), Fuyun (freenote), and TongCai (jctc).
Home Theater Standard
International standards:
ISO International Organization for Standardization Related Audio and Video Standards SMPTE Association of Motion Picture and Television Engineers Related Audio and Video Standards IES International Audio and Television Commission Related Audio and Video Standards ITU-R International Telecommunications Smart Radio Communications Division Related Audio and Video Standards THX Corporation Related Audio Standards and Recommendations DOLBYLABORATORIES Dolby Laboratory-Related Audio Standards and Recommendations DTS-related Audio Standards and Recommended Domestic Standards (including Acoustic Renovation Standards):
SJ/T11217-2000 "General specification for surround sound amplifiers for home theater"
SJ/T11218-2000 "General specification for combined speaker system for home theater"
The GYJ26-86 reverberation time standard adopts the “reverberation time and frequency characteristics of the studio†recommended by the National Radio and TV Division;
The GBJ232-82 electrical installation standard adopts the "Standard Specification for Construction and Acceptance of Electrical Installation Engineering";
The GB50312-2000 pipeline wiring standard adopts “Construction and Building Complex Wiring Construction and Specificationsâ€;
GB/T50356-2005 Design Code for Architectural Acoustics of Theatres, Cinemas, and Multi-purpose Halls
GB/T3557-94 "Cinema audio-visual environment technical requirements"
GY/T183-2002 "Technical Standards for Digital Stereo Cinemas"
GBJ118-88 "Code for Sound Insulation Design for Civil Buildings"
GBJ76-84 "Reverberation Time Measurement Specification for Hall"
GB50222-95 "Fire Protection Code for Interior Decoration Design of Buildings"
SJ/T11217-2000 "General Specification for Surround Sound Amplifiers for Home Theater"
SJT11218-2000 "General specification for combined speaker system for home theater" 