#define SCALE_MAX_DIFF 60 ///< maximum scalefactor difference allowed by standard
#define SCALE_DIFF_ZERO 60 ///< codebook index corresponding to zero scalefactor indices difference
+#define NOISE_PRE 256 ///< preamble for NOISE_BT, put in bitstream with the first noise band
+#define NOISE_PRE_BITS 9 ///< length of preamble
+#define NOISE_OFFSET 90 ///< subtracted from global gain, used as offset for the preamble
+
/**
* Long Term Prediction
*/