Splices also risk irreparable damage to heads on the drum. A safer solution is to rehouse each spool in another shell. DAT was developed by Sony and introduced in Machines were expensive and few pre-recorded tapes were made available, limiting its widespread appeal. This prevents DATs from being physically edited in the cut-and-splice manner of analog tapes, or open-reel digital tapes.
DAT cassettes are between 15 and minutes in length, a minute tape being 60 meters in length. Tapes longer than 60 meters tend to be problematic in DAT recorders due to the thinner media. DAT machines running at 48 kHz and DAT machines running at 32 kHz sample rate transport the tape at 4. Audio Cassettes. Your cart is empty Start shopping.
DAT Tapes and Tips. The signal from your mixer is run through a lowpass filter anti- aliasing filter which removes all frequencies above 20 kHz. This converter measures the voltage of the audio waveform several thousand times a second. Each time the waveform is measured, a binary number made of 1's and 0's is generated that represents the voltage of the waveform at the instant it is measured.
Each 1 and 0 is called a bit, which stands for binary digit. These binary numbers are stored magnetically on tape in the form of a modulated square wave recorded at maximum level.
The playback process is the reverse: The binary numbers are read from tape. An anti-imaging filter lowpass filter smooths the steps in the analog signal, resulting in the original analog signal.
Program Numbers are assigned to selections in order, and can then be used to locate them. A Start ID marks the beginning of each selection. It can be written manually or automatically. Manual Start IDs can be placed anywhere, say, to mark cues.
Automatic Start IDs are put on tape whenever there is enough signal applied, after a silence of three or more seconds. A Skip ID makes the machine skip the selection. This ID can only be written manually.
Whenever the machine senses a Skip ID during playback, it stops and fast winds to the next Start ID, and begins playing. This function can be turned on and off. Some DAT machines include these features: Search: When you enable the search function, the machine fast winds to the selected program number.
Memory Rewind or Return to Zero: When enabled, this function rewinds the tape to a preset "0" position on the tape counter.
Mic inputs: These let you plug two mics directly into the DAT recorder. Generally the sound quality of the DAT mic preamps is not as good as an external mixer or mic preamp. You have a choice of pro-type balanced XLR connectors or consumer-type unbalanced phone jacks. Confidence head playback: Some units have an extra head so you can hear the tape playback as you're recording. Time : Absolute time, remaining time on the tape, or elapsed time for the current selection. Meters : Peak-reading bargraph meters that show recording level.
Unlike with an analog tape deck, "0" on the meter is absolute maximum recording level. Error : If this indicator flashes, there was a loss of data. Usually the electronics can correct for this loss.
Some units show the error rate. This indicator works both during recording and playback. Search mode : This shows whether the search mode is activated.
On most models you can switch between 48 kHz and Most digital audio machines had the ability to show the error correction for tapes. DAT was popular in recording studios and were largely used in archives in the late s and s thanks to their lossless encoding.
The low cost and compact size of DAT compared to other methods were its strengths. Unreliability was one of the major drawbacks of the Digital Audio Tape.
Compared to hard disk recording, Digital Audio Tape recording is limited in nature. As Digital Audio Tape recording makes use of an uncompressed digital format, clones can be created from any Digital Audio Tape.
By: Justin Stoltzfus Contributor, Reviewer. By: Satish Balakrishnan. Dictionary Dictionary Term of the Day. Easy Normal Medium Hard Expert.
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