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2-Speed Record/Playback gives you the option of recording on
a standard microcassette at either normal speed of 2.4cm/sec or half the
normal speed (1.2cm/sec), for extended recording or dictation sessions
Auto Reverse
On cassette decks, the unit automatically plays the reverse side upon
conclusion of the first side. Using the direction button, the user can
manually switch the playing side at any time. Continuous auto reverse
from side to side is featured in some models.
TAPE RECORDER SPEED
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Standard
Cassette
Normal Playback/Record speed = 1 7/8 inches per second or 4.8 centimeters
per second (CentiMeters)
1/2 Speed = 15/16 inches per second or 2.4 CM
1/4 Speed = 15/32 inches per second or 1.2 CM |
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There
is obvious advantage of slower tape speeds is the extended recording
time. For example, a C90 cassette recorded at the normal standard
cassette speed provides a total of 90 minutes of recording time -
45 minutes on each side of the cassette. Recording at 1/2 speed (2.4
CM) doubles the amount of recording time - 180 minutes total - 90
minutes per side. Recording at 1/4 speed (1.2 CM) provides 4 times
the normal speed record time - 360 minutes total - 180 minutes per
side. |
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Tapes
recorded in the 4-track format utilize the entire width of the tape
in one direction only. They are never turned over or recorded on the
other side. Thus a C90 cassette recorded in the 4-track format at
2.4 CM provides a total of 90 minutes recording time on one side of
the cassette only. At 1.2 CM the total recording time is 180 minutes
on one side only. |
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The disadvantage
of slower tape speeds is a loss in audio quality. The speed at which
the tape passes the record/playback head is a large factor in determining
the quality of reproduction. The slower the tape speed, the poorer
the audio quality becomes. When extended record time per cassette
is necessary, a good compromise is 1/2 speed (2.4 CM). However if
the amount of recording time per cassette is not a factor, a much
better recording is produced at normal speed (4.8 CM). |
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The Sony
BM-146 and BM-246 4-track recorders, frequently used in court reporting,
operate at 2.4 CM or 1.2 CM. Marantz PMD 1 and 2 track recorders may
be modified to operate at 2.4 CM. Transcription of tapes recorded
at these slower speeds requires a transcribing machine modified to
operate at the appropriate speed. Many transcribers and recorders
may be modified to operate at 2.4 CM and some at 1.2 CM. See modifications
for more details. |
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Microcassette
All microcassette transcribers and recorders currently being manufactured
operate at a tape speed of 2.4 CM or 1.2 CM which is selectable by
the operator. The MC60 microcassette provides a total of 60 minutes
recording time at the 2.4 CM tape speed - 30 minutes per side of the
cassette. At 1.2 CM the recording time is doubled - 120 minutes total
- 60 minutes per side. The rule governing quality of audio reproduction
in relation to tape speed applies to microcassettes as well as standard
cassettes. That is, the slower the tape speed, the poorer the audio
quality becomes. |
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A common
problem associated with microcassette machines concerns the dual speeds
found on these machines. A tape recorded at the 1.2 CM tape speed
will sound like "Donald Duck" (very fast) when played back
on a transcriber set for 2.4 CM tape speed. Conversely, a tape recorded
at 2.4 CM tape speed and played back on a transcriber set for 1.2
CM tape speed will sound very, very slow. The variable speed control
found on microcassette transcribers does not have enough range to
compensate for the two separate tape speeds. The solution is to match
the tape speed setting on the transcriber with that of the recording. |
Tape Recorder
Used for cassette tape recording and playback. There are
single-well and dual-well cassette decks.
Full Logic Controls
Full logic tape transports use IC chips, rather than mechanical
devices, to operate a product. The result is faster operation, smoother
performance, increased convenience, and improved reliability.
Fast Forward
Allows for quickly advancing a cassette tape.
Rewind
Allows for quickly reversing a cassette tape.
Auto Stop
Automatically disengages the cassette deck transport at
the end of a tape.
Flash Memory
Refers to the amount of built-in Flash memory an MP3 player
possesses.
Bass Boost
Circuitry that enhances bass output in a portable audio system.
Three Heads and Other Advanced Technology for Great Recordings
1. Three head recording/monitor system with separate erase, record and
play heads permits specialization of function and direct off-the-tape
monitoring for superb results.
Clock
Some portable stereo systems feature a clock as part of
their front-panel display.
Built-in Microphone
An integrated microphone used for recording live content.
A built-in microphone is found on many record-capable portable cassette
decks.
Normal
Playback Time
Refers to the expected amount of playback time with a set
of new batteries.
Battery Requirements
Refers to the type of battery required for an electronic
device.
AC Adapter
Converts AC power from a standard wall outlet into DC (direct
current), allowing battery powered portable products to be operated from
standard house current.
Slide Switch Control
A single switch, controlled by the thumb, that operates all tape functions
in dictation recorders. dictation recorder
Tape Counter
Enables the user to manually index the recorded information on a cassette.
Voice Operated Recording (VOR)
Activates the recording mechanism in a tape recorder only when the user
is speaking and pauses the tape recorder when there is silence.
LED
This stands for Light Emitting Diode. It is placed on some units as
an indicator for various functions.
Voice Mirror
An LED that blinks in response to sounds being recorded. Provides visual
confirmation that source is being recorded.
Cue And Review
An audible high-speed search through a cassette. This enables the
user to locate a particular point in the recorded material.
Frequency
The number of times in a second a sound wave's cycle is completed?
expressed in Hertz (Hz).
Fast Play Feature (20% Faster than Normal)
reduces the time needed to review recordings
Built-In Speaker has excellent quality
to monitor tape playback
One-Touch Recording for simplified, quick
play/record operation
Sonymatic® Automatic Recording Level Control
uses advanced circuitry to ensure correct recording sound levels
for the particular situation
Automatic Shut-Off at end of tape reduces
mechanical wear and conserves battery power
DC-In Jack for two-way operation using
replaceable batteries or optional AC adaptor
Cue Marker Indexing System lets you
place an electronic "mark" at specific tape segments, and provides
rapid access during cue and review.
Microphone Jack allows connection of
an external microphone
3-Function
foot control /Rewind/Play/Forward.
3-Function
Foot Pedal this lets the transcriptionist hear the tape while
changing the mode from Play to Rewind to Fast Forward without removing
hands from the keyboard
Fully Adjustable Automatic Secretarial Reverse
automatically replays the last part of the dictation whenever the user
stops transcribing, to prevent lost dictation, and lets the operator adjust
how much to rewind so tape resumes at the most desirable point prior to
where it stopped
Speed/Tone/Volume Controls are individual
slider type, front-panel mounted, to allow easy one-finger adjustment
for transcribing convenience
End-of-Tape Alarm signals when the tape end is reached
Auto-Stop Function stops the tape
in Fast Forward and Rewind modes when End-of-Document, Electronic Indexes,
and other special instruction signals on the tape are reached
Built-In erase may be activated to
automatically erase recordings while rewinding the microcassette
Foot Control
Allows for hands-free operation of a transcriber via a foot pedal.
Flat Mic
A microphone that is omni directional to record sounds from
many directions. Ideal for meetings or lectures.
Playback Speed Control
Increases tape speed by up to 20% and decreases it by up to 30% for
quick review or slow study of recorded material.
Double Recording Time
gives you the option of recording on a standard cassette at
either normal speed or half the normal speed, for extended recording or
dictation sessions
Stereo records separate left and right
channels in stereo and provides convenient recording versatility in various
situations
Dual Speakers for enhanced listening
in stereo sound with distinct left- and right-channel placement
Hand Microphone with slide switch
control
Slide Switch Control
A single switch, controlled by the thumb, that operates all tape functions
in dictation recorders
2-Speed Record/Playback Transcribers
is compatible with two-speed microcassette or standard cassette
recorders, for maximum dictating and transcribing versatility
Electronic
Indexing
An electronic mark, identifying the start of a recording session, placed
by the user. This provides easy retrieval of information on dictation
equipment.
compatible with stereo and mono cassette recorders allows cassette
tapes recorded in either the monaural format or stereo format to be transcribed
Telephone Record Capability allows for direct recording of
telephone conversations
Fully Adjustable Automatic Backspace
begins playback prior to where it last stopped, preventing lost dictation
Dolby® B Noise Reduction
Boosts the level of the high frequency range during recording,
and tapers the high frequencies during playback, reducing tape hiss by
8 to 10 dB.
Use of tape recorders
An important use of tape recorders
is the recording of video. Video cassette recorders differ substantially
from audio recorders because of the use of a rotating magnetic head that
uses a helical scan of the tape medium. A helical scan is used to allow
for faster movement of the tape surface over the head.
Tape recorder often are tape
recorders, Tape, recorder, and that tape recorders, tape themselves
using
tape recorder or often tape recorders. Tape in used because of each use
is easier with tape recorders or tape recorder.
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