Activeforever Plextalk PTR2 Digital DAISY Player and Recorder - Manual (Page 123)

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Record speed setting can be set to "Normal speed" or "Double speed".
NOTE: The settings for the Standard, Music, Analogue cassette, Radio and
Conference modes cannot be changed. The settings for the Custom mode
can be changed to suit your requirements.
NOTE: When recording with the built in microphone, the "Background
noise" setting will automatically be set to "High".
NOTE: If you select a stereo quality sound setting, you cannot record
using the "Double speed" setting.
17.2.3. Available recording time for the sound quality
settings.
The available recording time will depend on the sound quality setting you
select. The higher the sound quality, the less recording time. Below are
listed the approximate recording times you can expect to get with 5
media types.
• PCM 44.1 kHz stereo
CD-R or CD-RW, Type 74, 650MB: 60 minutes
CD-R or CD-RW, Type 80, 700MB: 65 minutes
CF card, 64MB: 6 minutes
CF card, 256MB: 24 minutes
CF card, 1GB: 100 minutes
• MP3 256 k stereo
CD-R or CD-RW, Type 74, 650MB: 5 hours
CD-R or CD-RW, Type 80, 700MB: 6 hours
CF card, 64MB: 30 minutes
CF card, 256MB: 2 hours
CF card, 1GB: 9 hours
• MP3 128 k stereo
CD-R or CD-RW, Type 74, 650MB: 10 hours
CD-R or CD-RW, Type 80, 700MB: 11 hours
CF card, 64MB: 1 hour
CF card, 256MB: 4 hours
CF card, 1GB: 17 hours