The device has very powerful rechargeable battery, providing up to 250 hours of continuous recording. Moreover, using VAS mode you can record up to 500 hours from Li-pol 500mAh rechargeable battery. Interface USB 2.0 Audio recording format Mono Frequency band 100 Hz - 10 kHz Dynamic range - 65 dB Sample rate 8, 11, 16, 22 Voice Activating System YES Timer recording YES Add to the table "Compare all" Yes Miniature size, high-quality record and 1 control switch make the model attractive for everyone! Built-in microphone has high sensibility and low noise level , providing professional high-quality recording from the distance up to 12 m. It is very easy to control the operation of A81 recorder using Switch. Low power consumption: in spite of the miniature size, the recorder is able to record continuously for up to 10 days! A81 supports the system of digital markers: inaudible markers are added to the record allowing it to identify the record's time and date as well as the recorder's type and its serial number; and the attempts to modify it. Application of the USB 2.0 adapter allows it to quickly upload records onto the PC. Main functions of the recorder: High-quality audio record without compression; Built-in 4Gb memory or up to 150 hours of recording (in the mode 8 kHz, u-Law); Up to 250 hours of continuous recording from built-in rechargeable battery; Recording is enabled with Switch, Voice Activation System (VAS), or daily and once timers; LED Indication of the recorder's operation; Linear and circular record modes; - The system of digital markers, allowing it to determine the authenticity of record; - High-speed USB 2.0 (up to 7 Mb/s); To process sound and work with records we have developed the SoundProcessor program intended to: - process records to improve their intelligibility, suppressing noise etc. - the option to automatically transform records to text using Google technology.
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