SELD233 Spatial Validation

Purpose

Validate the implemented audio + spatial + text path with a synthetic B=3 FOA batch whose waveform lengths differ per sample.

The validation script prints:

processor outputs and placeholder expansion results
FOA -> 7ch feature shapes
SELD backbone hidden-state shapes
2.5 Hz spatial-token shapes
the final multimodal token tensor shape implied by the expanded prompt

If the full Qwen model is loaded, it also builds the actual multimodal inputs_embeds tensor after audio and spatial injection.

Script

validate_seld233_spatial_random_foa.py

Recommended Run

Shape-only validation without loading the full Qwen model:

python scripts/validate_seld233_spatial_random_foa.py \
  --model-id /apdcephfs_cq10/share_1603164/user/schmittzhu/model/Qwen2.5-Omni-7B \
  --baseline-repo-path /apdcephfs_cq10/share_1603164/user/schmittzhu/code/DCASE2024_seld_baseline \
  --seld233-checkpoint-path /apdcephfs_cq10/share_1603164/user/schmittzhu/code/DCASE2024_seld_baseline/3_1_dev_split0_multiaccdoa_foa_model.h5 \
  --seld233-feature-stats-dir /apdcephfs_cq10/share_1603164/user/schmittzhu/data/seld_feat_label/starss23_plus_foa_16k_29cls

Full multimodal embedding construction on a single device:

python scripts/validate_seld233_spatial_random_foa.py \
  --model-id /apdcephfs_cq10/share_1603164/user/schmittzhu/model/Qwen2.5-Omni-7B \
  --baseline-repo-path /apdcephfs_cq10/share_1603164/user/schmittzhu/code/DCASE2024_seld_baseline \
  --seld233-checkpoint-path /apdcephfs_cq10/share_1603164/user/schmittzhu/code/DCASE2024_seld_baseline/3_1_dev_split0_multiaccdoa_foa_model.h5 \
  --seld233-feature-stats-dir /apdcephfs_cq10/share_1603164/user/schmittzhu/data/seld_feat_label/starss23_plus_foa_16k_29cls \
  --load-qwen-model \
  --device cuda:0 \
  --dtype bfloat16

Expected Core Shapes

For 20-second padded inputs:

spatial_audio: [B, 320000, 4]
features: [B, 7, 1000, 64]
hidden_states: [B, 200, 128]
spatial_tokens: [B, T_spat_max, 256]

T_spat_max depends on the longest valid sample in the batch.

Current Limits

use_audio_in_video=False only
image + spatial not implemented
return_audio=True not implemented for the spatial subclass