Kenwood MZ-B3 manual How the MiniDisc got so small, Shock-Resistant Memory, Quick Random Access

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How the MiniDisc got so small

The 2.5-inch MiniDisc, encased in a plastic cartridge that looks like a 3.5- inch diskette, uses a new digital audio compression technology called ATRAC (Adaptive TRansform Acoustic Coding). To store more sound in less space, ATRAC extracts and encodes only those frequency components actually audible to the human ear.

Shock-Resistant Memory

One major drawback of optical read systems is that they can skip or mute when subjected to vibration. The MD system resolves this problem by using a buffer memory that stores audio data.

This feature allows you to enjoy playback while carrying the recorder, record while holding the recorder, and so on.

Quick Random Access

Like CDs, MDs offer instantaneous random access to the beginning of any music track. Premastered MDs are recorded with location addresses corresponding to each music selection. Recordable MDs are manufactured with a "User TOC Area" to contain the order of the music. The TOC system is similar to the "directory management system" of floppy disks. In other words, starting and ending addresses for all music tracks recorded on the disc are stored in this area. This lets you randomly access the beginning of any track as soon as you enter the track number (AMS), as well as label the location with a track name as you would file on a diskette.

User TOC	Music Data
Area	(recorded data)

Contains the order and start/end points of the tracks.

Additional information

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SONY MZ-B3 (E) 3-798-610-22(1)

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Contents Portable MiniDisc Recorder Information Owner’s RecordFor Customers in the USA Welcome Table of contents Additional information Power sourcesAlkaline batteries BottomSlide Open and open LidDisplay window while recording Recording an MD rightSound source Microphone PressInsert an MD with the label Lid down to closeIf the play does not start Play PressDisplay window while playing back To listen in stereo soundTo release the digital VOR function IndicatorDictating StopVarious Stereo microphone To MIC Plug in Power Mono monauralRecording in stereo with an external microphone To stop recordingTo record from a monaural player Red White RK-G128 not supplied To MIC Plug in PowerRecording from other equipment Portable CD player, portable MD player, etc To 2 orTrack marking while recording Track marking to divide a recordingContinue to next page m Tips on track marks Track marking important pointsTips on recording ∙ While in stop mode To know the remaining time, etc∙ While recording Recording Setting the clock to stamp the recorded timeIf you make a mistake while setting the clock WaysCharging the built-in battery for the clock Various ways To switch to normal playbackListening at a fast speed Playing tracks repeatedlyTo know the time and track name Tips on playbackTo lock the controls Hold function VariousTo listen with a monaural player Listening with other equipmentTo add track marks while recording Track marking a recordingEditing recorded Various ways Track marking Track numbers increaseAppears for about 2 seconds Erasing a track markErase a track mark Track numbers decrease PauseTo erase other tracks Erasing a trackTo erase a part of a track Pstop PlayRREC Pstop Erasing a whole discUsing on house current Using on a lithium ion rechargeable batteryTo wall outlet AC-E45HG AC power adaptor not supplied To DC Ing b When to charge or replace the batteriesBattery lifea Batteries RecordPrecautions Mechanical shock or vibration To remove the manganese dioxide lithium batteryYou cannot record using a timer For Customers in the USAAdditional information Symptom Cause/Solution TroubleshootingAdditional information System limitations Symptom CauseError message Meaning/Remedy Error messagesTR Full Specifications SystemGeneral Premastered MDs What is the MD?Optional accessories How MiniDiscs workUser TOC Music Data Area Quick Random AccessHow the MiniDisc got so small Shock-Resistant MemoryRecorder Looking at the controlsDisplay window Current locationRecorded portion Disc length Carrying case Remote controllerSony MZ-B3 E Sony MZ-B3 E