{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"8770e87a-1162-4f3c-b374-e88b5e736a68","title":"我们何以成为后人类 文学、信息科学和控制论中的虚拟身体","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787301280768","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"8770e87a-1162-4f3c-b374-e88b5e736a68","id":"8770e87a-1162-4f3c-b374-e88b5e736a68","uuid":"8770e87a-1162-4f3c-b374-e88b5e736a68","title":"我们何以成为后人类 文学、信息科学和控制论中的虚拟身体","normalized_title":"我们何以成为后人类文学信息科学和控制论中的虚拟身体","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787301280768","isbns":["9787301280768"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":474,"navigation_url":"https://workshop.closeclaw.top/ai/book/8770e87a-1162-4f3c-b374-e88b5e736a68","title_url":"https://workshop.closeclaw.top/ai/title/%E6%88%91%E4%BB%AC%E4%BD%95%E4%BB%A5%E6%88%90%E4%B8%BA%E5%90%8E%E4%BA%BA%E7%B1%BB%20%E6%96%87%E5%AD%A6%E3%80%81%E4%BF%A1%E6%81%AF%E7%A7%91%E5%AD%A6%E5%92%8C%E6%8E%A7%E5%88%B6%E8%AE%BA%E4%B8%AD%E7%9A%84%E8%99%9A%E6%8B%9F%E8%BA%AB%E4%BD%93","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/8770e87a-1162-4f3c-b374-e88b5e736a68/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/8770e87a-1162-4f3c-b374-e88b5e736a68/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/8770e87a-1162-4f3c-b374-e88b5e736a68","page_url":"https://workshop.closeclaw.top/api/ai/books/8770e87a-1162-4f3c-b374-e88b5e736a68/page","search_url":"https://workshop.closeclaw.top/api/ai/books/8770e87a-1162-4f3c-b374-e88b5e736a68/search"},"page":{"printed_page":281,"pdf_page":294,"physical_index":294,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"baecfeb58881e1e689828df18bd1a20ba73543aa197eb8ad3051c94e24f84a79"},"chapter":"第三章","content":"到了1932年，钢卷带(steel tape）成为高端机器(high-endmachines）中的备选载体。英国广播公司（BBC）对钢卷带的发展产生了积极浓厚的兴趣，并且用它来传送英王乔治五世当年的圣诞贺词。1935年，在纸或者塑料载体上涂上氧化铁并且通过一个环形头传动制成的胶片带（film tape）面世了。[30]胶片带最大的优势在于方便拼接，但它最初的声音质量相当差，根本无法和钢卷带相提并论。1938年，通过引进高频偏压，部分地解决了如何在声音频率与胶片带上的图案之间建立良好的对应的问题（即控制迟滞)。[31]到了1941年，胶片带的声音质量得到大幅提升，以至于可以和演播室使用的钢卷带一争高下。在消费市场上，使用电线的机器还是相当普遍。直到第二次世界大战之后，才进行系统的研究，为胶片带找到最佳的涂层材料。1948年，美国首次将专利权授予使用胶片带和环形头的磁性记录器。之后，胶片带的使用迅速扩散，并且在十年之内彻底取代钢卷带。胶片带不仅用于商业市场，而且用于专业的工作室和电影厂。\n\n第八章 信息论的物质性\n\n281","previous_page":280,"next_page":282}