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Fix spectrogram frequency axis orientation #53

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Merged
jon-myers merged 1 commit into from
Nov 7, 2025
Merged

Fix spectrogram frequency axis orientation #53

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4 changes: 4 additions & 0 deletions idtap/spectrogram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -111,6 +111,10 @@ def from_audio_id(cls, audio_id: str, client: Optional['SwaraClient'] = None) ->
shape = tuple(metadata['shape']) # [freq_bins, time_frames]
data = np.frombuffer(decompressed, dtype=np.uint8).reshape(shape)

# Flip frequency axis so row 0 = lowest frequency (matches freq_bins ordering)
# Server data has row 0 = highest frequency, but we want row 0 = lowest
data = np.flipud(data)

# Get exact audio duration from recording database
time_resolution = None
try:
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