bit rate reduction (BRR)

The term bit rate reduction ( BRR ) is used synonymously for data reduction. Bit rate reduction includes all redundancy and irrelevance methods for reducing the amount of data.

The term Bit Rate Reduction is also used in audio compression, for example in adaptive delta pulse code modulation( ADPCM) or MP3. In the former compression, for example, sixteen 16-bit values from pulse code modulation are compressed into nine bytes.