# LMFB 圖的意義解釋 ---  上圖是某一張testing data的圖片, 每張圖片的結構是 np.array(batchsize, 128, 149, 3),分別代表(batchsize, freqbin, time, channel)。 freqbin越往下frequency越大 time:每個frame都代表0.063秒,所以149個frame大概10秒 channel: 分別是 (ata, delta_data, delta_delta_data) 所以delta_data的部份會以綠色呈現,delta_delta_data的部份會以藍色呈現。如果看到比較明顯一條藍色就有可能是本來是padded 0的data去減掉前面有值的部份, 這種帶有padding過再delta 與delta delta的圖才是model拿來training 和 inference的input。
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