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Name:2 group recording boxes




 function characteristic: USB connection way unique DSP processing structure, can real-time, carry on each independent digitized sound recording and the playback highly effective. unique DSP processing structure, each line's digitized sound recording and the playback may simultaneously and carry on independently. may dynamic choose the different speech coding speed, and carries on the real-time pronunciation compression and the decompression, like 32kbps ADPCM, 64kbps PCM. the reliable double sound multi-frequency pressed key (DTMF) examines, may while record and playback, responds the DTMF pressed key immediately. the unique signal sound produces (Generation) and distinguishes the (Detection) algorithm, but distinguishes the random frequency precisely the tonic train signaling or produces the random frequency tonic train signaling. reliable two simulation relaying ringing examination. has the reversal of poles and the speech recognition, can distinguish opposite party to pick accurately machine. has the calling recognition (Calling Identity Delivery) the function. has the processor and the large capacity memory, not extra takes main engine's resources. can distinguish the seats card to pick machine, on-hook and the racket inserts and so on movements. the driver use event driven structure, is advantageous for the multichannel programming. does not need the extra hardware, may realize the tripartite telephone conversation and conference function has TTS (Text to Speech) the function.   Technical specification: connection way: Two simulation relaying connection impedance: 600 ohms frequency response: 300Hz~3400Hz on piece buffer: 32K~256K Byte digit pronunciation: A/u-law PCM, ADPCM data rate: 64Kbps, 32Kbps, 16Kbps DTMF code: 0~9th, *, #, A, B, C, D exchange function: 256 channel direct exchanges the call monitors: Signal sound, pronunciation, reversal of poles calling number: FSK, DTMF FSK modulation system: logic 0: 2200Hz±1% logic 1: 1200Hz±1% data transfer way: Binary asynchronous serial mode Operating system: Windows 98, Windows 2000 (Professional, Server, and Advanced Server), Windows XP Programming language: Visual C++ Borland C++ Builder Visual Basic Delphi Power Builder Application domain: recording channel, sound recording

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