Olympus DM-4 DM-4 Detailed Instructions (English) - Page 171

Specifications General points 4 Recording medium: Built-in memory DM-4: 8 GB DM-2: 4 GB microSD card (512 MB to 16 GB) 4 Recording format: Linear PCM (Pulse Code Modulation) MP3 (MPEG-1 Audio Layer3) WMA (Windows Media Audio) 4 Input level: [Mic Sense]:[Middle] - 60 dBv 4 Maximum working output: 280 mW (8 Ω speaker) 4 Maximum headphone output: ≤_ 150 mV (according to EN 50332-2) 4 Wide band characteristic headphone output: 75 mV ≤_ (according to EN 50332-2) 4 Speaker: Built-in ø 23 mm round dynamic speaker 4 MIC jack: ø 3.5 mm mini-jack, impedance 2.2 kΩ 4 EAR jack: ø 3.5 mm mini-jack, impedance 8 Ω or more 4 Input power requirement: Battery: Lithium ion battery External power supply: A C adapter(A515) 5 V 4 External dimensions: 113.6 mm × 45.6 mm 15.2 mm (without protrusions) 4 Weight: 98 g (including battery) 4 Operating temperature: 0°C - 42°C Overall frequency response 4 During recording or playback mode: Linear PCM format Recording mode 48 kHz 44.1 kHz Overall frequency response 40 Hz to 23 kHz 40 Hz to 21 kHz MP3 format Recording mode 320 kbps 256 kbps 192 kbps 128 kbps Overall frequency response 40 Hz to 20 kHz 40 Hz to 20 kHz 40 Hz to 19 kHz 40 Hz to 17 kHz WMA format Recording mode Overall frequency response ST XQ 40 Hz to 19 kHz ST HQ ST SP 40 Hz to 16 kHz 40 Hz to 9 kHz 8 HQ 40 Hz to 13 kHz SP 40 Hz to 8 kHz LP 40 Hz to 3 kHz Specifications 4 Built-in stereo microphone (During recording mode): DM-4: 70 Hz to 20 kHz DM-2: 70 Hz to 20 kHz • However, when recording by the MP3 format or the WMA format, the upper limit value of the frequency response depends on each recording mode (see above diagram). EN 171