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Audio Formats
(Codec)
(for AVC, MPEG-4)
Sampling frequency (*2): 24, 32, 44.1, 48 kHz
Bit rate: Max. 288 kbps / channel
WMA
(for Windows Media
Video 9)
Bit rate: 32 to 192 kbps (Supports variable bit rate
(VBR))
Sampling frequency (*2): 44.1 kHz
Photo (*8)
Photo Format
(Codec)
JPEG
Media File format: Compatible with DCF 2.0/Exif
2.21 file format
File extension: .jpg
Profile: Baseline Profile
Number of pixels: Max. 4,096 × 4,096 pixels
(16,000,000 pixels)
Voice Recording
Audio Format
(Codec)
MP3
Bit rate: 64, 128, 256 kbps
Sampling Frequency: 44.1 kHz
(*1) The maximum recordable number of podcasts is 20,000.
(*2) Sampling frequency may not correspond to all encoders.
(*3) Copyright protected WMA/WMV files cannot be played back.
(*4) Copyright protected AAC-LC files cannot be played back.
(*5) Non-standard bit rates or non-guaranteed bit rates are included depending on the sampling
frequency.
(*6) These numbers indicate the maximum resolution of playable video, and do not indicate the display
resolution of your Walkman. The display resolution is 320 × 240.
(*7) Some WMV files can be played back only by transferring using Windows Media Player.
(*8) Some photo files cannot be played back, depending on their file formats.
Maximum recordable number of songs and time (Approx.)
The approximate times are based on the case in which you transfer or record only 4 minute
songs (not including videos and photos) in the MP3 format. Other playable audio file format song
numbers and times may differ from MP3 format.
NWZ-E473/E473K/E573 NWZ-E474/E474K/E574 NWZ-E475/E575
Bit rate Number Time Number Time Number Time
128
kbps
835 55 hr. 40 min. 1,750 116 hr. 40 min. 3,650 243 hr. 20 min.
Maximum recordable time of videos (Approx.)
The approximate times are estimated in the case where only videos are transferred. The time
may differ, depending on the conditions under which your Walkman is used.
NWZ-
E473/E473K/E573
NWZ-
E474/E474K/E574
NWZ-
E475/E575
Bit rate Time Time Time
Video Format: 384
kbps
Audio Format: 128
kbps
13 hr. 20 min. 28 hr. 00 min. 58 hr. 20 min.
Output (headphones)
Frequency response
20 to 20,000 Hz (when playing data file, single signal measurement)
Noise Canceling function (NWZ-E573/E574/E575 only)
226