Very high MLD for 7_1_4, 160kbps, -26LKFS input, with deterministic packet loss pattern
# Basic info - Encoder (float): d18cbee3 (ivas-float-update) - Decoder: 074e9116 (tag: 20241023_Ittiam_Decoder_Release_subjective_Testing) Input format: 7_1_4 Input level: -26LKFS Encoding bitrate: 16kbps Decoding format: 7_1_4 Loss pattern: generated with following script ``` for l in range(1, 20, 3): losts += '!k' * (9 * l) + ' k' * l ``` # Bug description The fixed- and the floating-point decoded signal exhibit high MLD (59.24), low SSNR (18.29). Major waveform deviation across all channels. The worst deviation was observed in channel 4, where the fixed-point decoder produced two massive pulses, as illustrated in the follow plot. ![image.png](/uploads/617b67a670dbabe60239a0431c97e4de/image.png) # Ways to reproduce Supoprting files: https://dolby.box.com/s/4mpzjcv9u14dlqkrv2j36vgd6h6nmr55 ``` ./IVAS_cod -no_delay_cmp -mc 7_1_4 160000 48 in.wav bit ./IVAS_dec -no_delay_cmp 7_1_4 48 bit fx.wav ./IVAS_dec_ref -no_delay_cmp 7_1_4 48 bit fl.wav ```
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