Observed arrival · 2026-08-27
雷出版: Telephone Technology in Six Formats
A Japanese technical publishing shop selling books and CDs about the engineering of sound, including source code and datasets.
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Field notes
The catalog is structured as an eight-volume telephone-technology series, with each volume treating a defined implementation problem such as Goertzel-based DTMF detection or NLMS echo cancellation. The page lists 16 books and 32 CDs, and offers six forms per displayed title, including English, electronic, and source-code-and-dataset variants. Search can use bibliographic identifiers such as ISBN and JAN as well as recorded-track information.
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●ProPolished or operationally mature
◎NicheUnusually specific use
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