Roberts Radio RecordR manual Audio formats, Bit-Rates

Audio formats

Bit-Rates

The following table summarises the maximum supported bit-rates for the various audio formats that are playable on your radio. Higher rates may be playable in some cases but performance of the product may be affected.

Codec	Maximum supported rate
AAC (LC)	320 kbits/sec
MP3	320 kbits/sec
WAV (1)	1536 Mbits/sec
WMA (2)	320 kbits/sec

All codecs support 2-channel (stereo) coded files only.

All codecs support sample rates up to 48 kbits/sec (includes 32 and 44.1 kbits/sec).

SD/SDHC playback supports MP3 and WMA formats only.

Files which have Digital Rights Management (DRM) protection applied will not be playable on your radio.

(1)The maximum supported bit-rate is for 48 kHz sampling, 2 channels and 16-bits per sample.

There are many variants of WAV format. 16 bit PCM stereo is supported. Most other variants are not supported.

(2)WMA Lossless, WMA Voice, WMA 10 Professional, and files which have DRM protection are not supported.

SD/SDHC card information

Listed here are guidelines for SD/SDHC cards to be used in your radio.

1.Card capacity must be between 512MB and 32GB.

2.Card must be FAT16 or FAT32 formatted.

3.We recommend less than 500 files or folders are placed in the root folder.

4.We recommend less than 10,000 files are placed on a card.

5.We recommend that folders are nested less than 10 levels deep.

6.We recommend that file and folder names are less than 128 characters long.

7.Actual limits (points 3, 4, 5, 6) are higher and are set by the card format.

If you need any further advice, please call our Technical Helpline on :-	44
020 8758 0338 (Mon-Fri)