Analysis of information sources in references of the Wikipedia article "MP3" in English language version.
Its CBR produces packets with exactly the size the encoder requested, without a bit reservoir to imposes additional buffering delays, as found in codecs such as MP3 or AAC-LD. [...] [Tonal noise] is most noticeable in low-bitrate MP3s.
"MPEG-2.5" is the name of a proprietary extension developed by Fraunhofer IIS. It enables MP3 to work satisfactorily at very low bitrates and introduces the additional sampling rates 8 kHz, 11.025 kHz and 12 kHz.
Search – locating a desired position on thedisc (audio CD only)(2004 boombox)
• Fast forward and review playback does not work with a MP3/WMA/JPEG-CD.
"MPEG-2.5" is the name of a proprietary extension developed by Fraunhofer IIS. It enables MP3 to work satisfactorily at very low bitrates and introduces the additional sampling rates 8 kHz, 11.025 kHz and 12 kHz.
Search – locating a desired position on thedisc (audio CD only)(2004 boombox)
• Fast forward and review playback does not work with a MP3/WMA/JPEG-CD.