DM-4 - DM-4 Digital Voice Recorder - The Fully Accessible, All-In-One Recording Device

• The DM-4 delivers everything you expect from an Olympus audio recorder, and then some. With its incredible 8GB of internal memory, it supports over 2,000 hours of recording and allows plenty of storage for your favorite songs. It also supports Daisy (Digital Accessible Information System) -- specialty software that converts textbooks into speech for the blind and dyslexic.
• 2,000 hours recording with 8GB internal memory and microSD card slot
  
• 2.2" | 5.6 cm color LCD
  
• MP3, PCM, and WMA recording
  
• Dragon Certified

RECORDING HOURS

• Supports over 2,000 hours of recording with 8GB internal memory.
• Also supports removable microSD media up to 16GB.

MULTIPLE RECORDING FORMATS

• Enables high quality recording, no additional software required. Records in MP3, PCM andWMA formats; plays back in MP3, PCM, WMA and Audible file formats.
• PC LINK.
  
• Uploads files directly to your PC using a simple cable connection, while the USB 2.0 High-Speed Storage feature allows fast transfers and mass storage of files.

FULL-COLOR SCREEN

• The bright 2.2" color screen enables clear, easy navigation of menus and files.
• And when using the DM-4 as a music player you have the ability to see the album cover and artist name.

BATTERY CHARGE FUNCTION.

• Charges the battery while connected to your PC or plugged in the AC Adapter (included).
• Long 29-hour battery life with lithium-ion rechargeable battery.

DM-4 Features

Download PDF Feature Sheet - new window opens

8GB INTERNAL MEMORY

• 8GB of internal memory allows you 2,000 worry-free hours of recording time, with microSD card compatibility that extends it to 512MB-16GB.
  

2.2 INCH | 5.6 cm COLOR LCD

• Bright 2.2" color screen enables clear, easy navigation of menus and files.
  

MP3, WMA & PCM RECORDING

• Record and play back in MP3, WMA and PCM formats with a quality that's as good as its operation is easy.
  

VOICE GUIDANCE

• A voice guidance system ensures seamless, user-friendly operation of all functions in the menu.
  

MULTIPLE FORMATS

• Supports Daisy, audible.com, podcasting and audio book formats.
  

USB CONNECTION COMPATIBLE WITH PC AND MAC

• Transfer audio files quickly and easily.
  

BATTERY CHARGE FUNCTION

• Charges the battery while connected to your PC or when plugged in to the AC Adapter (included). Long 20-hour battery life with lithium-ion rechargeable battery.
  

MULTIPLE LANGUAGE DISPLAY

• The bright LCD supports and displays three languages -- another plus for accessibility. (EN/FR/ES)
  

29 HOURS OF BATTERY LIFE

• Don't let old memories of battery drain your confidence. There's up to 29 hours of recording capability with the DM-4's long-life battery. And the battery can be charged when you hook the recorder up to your computer via the USB port or when you plug in the AC Adapter (included).
  

VOICE ACTIVATION

• Voice Activation makes automatic starting and stopping of the recorder an extra benefit that saves time and energy.
  

OLYMPUS SONORITY

• Edit your files with Olympus Sonority sound editing software (included), which is compatible with PCs and MACs.
  

VOICE RECOGNITION.

• Use simple voice commands to create calendar entries, to-do lists and other basic functions.

DM-4 Specifications

• Recording Format 

  • MP3, PCM (WAV) and WMA
    

• Recording Media

  • Built-in 8 GB flash memory (and micro SD card slot)
    

• Recording Time

  • PCM
    

    • 48 kHz 16 bit 11 hours, 5 minutes
      
    • 44.1 kHz 16 bit 12 hours, 5 minutes

  • MP3
    

    • 44.1 kHz 320 kbps 53 hours, 00 minutes
      
    • 44.1 kHz 256 kbps 66 hours, 30 minutes
      
    • 44.1 kHz 192 kbps 89 hours, 00 minutes
      
    • 44.1 kHz 128 kbps 133 hours, 00 minutes

  • WMA
    

    • STXQ 44.1 kHz 128 kbps 130 hours, 30 minutes
      
    • STHQ 44.1 kHz 64 kbps 261 hours, 00 minutes
      
    • STSP 22 kHz 32 kbps 522 hours, 00 minutes
      
    • HQ 44.1 kHz 32 kbps 522 hours, 00 minutes
      
    • SP 22 kHz 16 kbps 1,029 hours, 00 minutes
      
    • LP 8 kHz 8 kbps 2,043 hours, 00 minutes
      

• LCD

  • 2.2 inch | 5.6 cm, color
    

• Folders Messages

  • Voice: 5 folders / Up to 999 files per folder
    
  • Music: 1 folder / Up to 999 files
    
  • Podcast: 1 folder / Up to 999 files
    

• Overall Frequency Response

  • PCM
    
    • 48 kHz 16bit: 40-23,000 Hz
  • MP3
    
    • 128 kbps: 40-17,000 Hz
  • Mic
    
    • 70-20,000 Hz
      

• Speaker

  • 23 mm round dynamic speaker
    

• Microphone Jack

  • 3.5 mm / Stereo mini
    

• Earphone Jack

  • 3.5 mm / Stereo mini
    

• Power Supply

  • LI-50B Lithium Ion battery or AC power supply
    

•   Batteries

  • 29 hours (LP mode recording)
    

• Size

• 4.5 x 1.8 x 0.6 in. (113.6 x 45.6 x 15.2 mm) without protrusions
  
• Weight 3.4 oz. (96.8g) including battery
  

• OS Supported

  • Microsoft® Windows XP/Vista/7
    
  • Mac OS X 10.4.11 – 10.5
• Specifications and design are subject to change without notice.

DM-4 Accessories

Noice Cancellation Microphone (ME-12)

• Digital voice recorders provide great solutions for voice recognition applications, however background noise will sometimes cause a problem.
• The ME-12 plugs into your digital recorder's 3.5mm microphone jack for uni-directional recording in high-noise environments. It will cut down on much of the background noise and result in a more accurate transcription.
• Specifications:
  
• Microphone length: 1” inch | 2.5 cm
  
• Cord length: No cord
  
• Plug: 3.5mm
  
• Frequency Response: 200 – 5,000 Hz
  
• Directivity: Uni-directional
  
• Mike Sensitivity: -68db
  
• Output Impedance: 1.4 kW
  
• Color: Black foam cover over microphone
  
• Weight: 3.5 grams

Stereo Microphone (ME51S)

• The ME51S stereo microphone can be plugged into the earphone/microphone/remote control socket to give fantastic quality stereo recording. Also includes a 3.3 foot extension cable with tiepin-clip.
• The recording level indicator for the right and left channels is visible in the LCD display during recording.
• Specifications: Type: Stereo electret condenser microphone
  
  • Microphone dimensions: 38(L) x 14(B) x 40(H)mm
    
  • Plug: 3.5mm stereo
    
  • Frequency Response: 100 – 15,000 Hz
    
  • Directivity: Uni-directional x 2
    
  • Mike Sensitivity: -40db at 1 kHz
    
  • Output Impedance: 2.2kOhms
    
  • Power Supply: Plug-in-power system (1.5V - 10V)
    
  • Color: Silver and Black microphone
    
  • Weight: 7 grams main unit, 18 grams including extension cable and tiepin clip
  • Item #145037
    
    

Telephone Recording Device (TP-7)

• Ever need to record an important telephone conversation? The TP-7, telephone pickup, makes phone recording two sides of the conversation. Just plug the TP-7 jack into the "MIC" jack of your recorder, and put the earphone side into your ear. When speaking on the telephone, the TP-7 will capture both sides of the conversation for recording by your voice recorder.
• Includes adapter to convert from monaural 3.5mm mini-plug to stereo 3.5mm mini-plug. Also includes monaural 3.5mm mini-plug to monaural 2.5mm mini-plug adapter.
• Note: The TP-7 is recommended for cellular phones and landline phones.
• Note: The TP-7 will only act as a microphone. It will not playback sound.
• Note: When used with the DM-10DM-20, selct Monaural Input in the Menu for selection EXT. INPUT.
• Item #145051

Tie Clip Microphone (ME-15)

• The ME-15 is a small, lightweight tie-clip microphone that can be clipped to the tie or the collar, or under a jacket or shirt for concealment. The ME-15 is an ideal accessory for Olympus digital voice recorders. When using with Olympus Pearlcorder Microcassette recorders, please purchase the PA-1 plug adapter.
• Type: Electret condenser microphone
  
• Directionality: Non-directional
  
• Frequency response: 100 - 12,000Hz
  
• Sensitivity: -42dB at 1kHz (0dB = 1V/Pa)
  
• Output impedance: 2.2kOhm
  
• Power supply: Plug-in-power system (1.5V . 10V)
  
• Cord length: 1m (3.3ft)
  
• Output Plug Type: 3.5mm Monaural mini-plug
  
• External dimensions: 8.8 x 34.3mm
  
• Weight: Approx. 11g
  
• Included: Tiepin-type clip

PA-1 Plug Adapter

• Converts 3.5mm plug to 2.5mm plug.