# Basic info <!--- Add commit SHA used to reproduce--> - Float reference: - Encoder (float): b63c033f6c392878104cf9af73b00159945c7d32 - Decoder (float): b63c033f6c392878104cf9af73b00159945c7d32 - Fixed point: - Encoder (fixed): 571ad39a4f5e105fd68893c1f025bb0ce966abf1 - Decoder (fixed): n/a # Bug description The FB BWE is lacking energy for certain segments, e.g. 2.5 - 4.6s, 5.9 - 6.1s and 6.3 - 7.0s. The depicted spectrograms are for ISM1, i.e. the first channel. **BASOP:**  **Float:**  # Ways to reproduce <!--Commandline or script--> ```bash IVAS_cod -ism 4 ivas-codec/scripts/testv/stvISM1.csv ivas-codec/scripts/testv/stvISM2.csv ivas-codec/scripts/testv/stvISM3.csv ivas-codec/scripts/testv/stvISM4.csv 160000 48 ivas-codec/scripts/testv/stv4ISM48s.wav out.192 IVAS_dec EXT 48 out.192 out.wav ``` <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary.-->