Basic Operation
Reference Manual
12
4.
Press the [+] or [–] button and then [
] (Play) button to specify the sampling
frequency (kHz) and the bit rate (bit) (if you selected PCM), or specify the bit
rate (kbps) (if you selected MP3).
The following formats are supported:
• PCM (File extension: wav)
Sampling frequency (kHz):
96, 88.2 (indicated as 88), 48, 44.1 (indicated as 44)
Bit rate (bit):
24, 16
• MP3 (File extension: mp3)
Bit rate (kbps):
320, 192, 128, 64, 32
For both parameters, a higher value will result in better sound quality, but data size
will increase.
5.
After the setting process is complete, press the [
■
] (Stop) button.
The PR7 displays the HOME screen.
Estimated available recording time (with internal 2GB memory)
* If you record multiple files, the total available recording time will be shorter than those estimated above.
* The largest available recording space (for continuous recording) in one file is 2GB. If the recording file
size reaches 2GB, the PR7 will automatically continue recording into a subsequent file in a few
seconds (when using a microSDHC card). However, the unit will be unable to record continuously if the
recording exhausts the battery. Battery life
* To display the available recording time, press the [
■
] (Stop) button repeatedly while the HOME screen
is displayed.
Recording mode
Available recording
time (estimated)
Recording
mode
Available recording time
(estimated)
PCM
24bit
96kHz About 55 minutes
MP3
320kbps About 12 hours 45 minutes
88.2kHz About 1 hour
192kbps About 21 hours
48kHz About 1 hour 45 minutes
128kbps About 32 hours
44.1kHz About 1 hour 55 minutes
64kbps About 64 hours
16bit
96kHz About 1 hour 20 minutes
32kbps About 127 hours
88.2kHz About 1 hour 25 minutes
48kHz About 2 hours 40 minutes
44.1kHz About 2 hours 55 minutes
Developer’s column: Tips for selecting a recording format
When you select a recording format, first consider which is more important: sound
quality or data size. Then, think about how you will use the recording before finally
deciding on the recording format.
For example, music CDs are recorded with rates of 44.1kHz/16-bit. If you are
recording for a CD, you may want to select PCM “16/44.” Generally, in music
production applications, projects use the format of 48kHz/24-bit. In the field
recording industry, in which the sounds of nature are recorded, people often use
96kHz/24-bit format.
On the other hand, music data distributed on the Internet typically features lower
resolution in the range of 320 through 128kbps. If you want to send music data via
e-mail to share a rough sketch of a song idea with your band members, selecting
32 or 64kbps would be a good choice.
It is very important to record audio with a sound quality that suits the purpose. We
recommend that you try out different formats first, and then pick the best one for
your application.
