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The term Variable Control Voice Actuator (VCVA) refers to a digital recording technology developed by Olympus, which is implemented in many of their digital voice recorders. [1] It prevents the recording of silence, so pauses in a speaker's dictation do not waste time, power or recording space.
Digital dictation became possible in the 1990s, as falling computer memory prices made possible pocket-sized digital voice recorders that stored sound on computer memory chips without moving parts. Many early 21st-century digital cameras and smartphones have this capability built in.
Digital Speech Standard / Quality Play (DSS-QP) Sony LPEC; Truespeech Triple Rate CODER (TRC) [23] – used in some pocket recorders; Micronas Intermetall MI-SC4 - used by voice recorders such as RadioShack Digital Recorder [24] and I-O DATA HyperHyde [25] FFmpeg (decoder only)
VoIP is usually implemented as a cost-saving measure over POTS (Plain old telephone systems). The same holds true now for VoIP recording. Most recording vendors are able to record the various standards of VoIP such as G.711, G.729a/b and G.723 and software-only solutions as compared to the intensive hardware and software associated with legacy PBX recording.
The NXDN digital voice and data protocol uses the AMBE+2 codec. NXDN is implemented by Icom in the IDAS system and by Kenwood as NEXEDGE. APCO Project 25 Phase 2 trunked radio systems also use the AMBE+2 codec, while older Phase 1 radios such as the Motorola XTL and XTS series use the earlier IMBE codec. Newer Phase 1 capable radios such as the ...
It also features a 40-preset FM radio with FM recording, a voice recorder, and a 24-hour battery life on continuous audio playback. Storage is expandable via a microSDHC slot. Firmware version 1.01.22 enables FLAC and Ogg Vorbis playback. Like the Clip, the Fuze underwent two hardware revisions, the first based on the AS3525 (like the first ...
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Digital audio recorders are fundamentally high bit-rate data recorders storing PCM encoded audio data. The main advantage of any digital recording medium is that of consistent, flat frequency response, high dynamic range audio reproduction compared to analog tape recorders, which is why some of the first uses of digital audio recording were for ...
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