johnme 發表於 2019-6-13 12:50
如果你睇唔慣3-D plot, 你可以用下面兩種劃法.
方法(1):
This is a waterfall plot generated from my measurement data file.
The vertical axis is SPL (sound ...
This is a spectrogram.
It is simply a view from the top of the waterfall plot. 本帖最後由 johnme 於 2019-6-13 13:08 編輯
johnme 發表於 2019-6-13 12:51
This is a spectrogram.
It is simply a view from the top of the waterfall plot.
方法(2):
This is a RT60 plot.It is simply a waterfall plot with the SPL axis removed.
It tells you how speed of sound at different frequency fade away.
You can see that the low frequency takes a very long time to decay. johnme 發表於 2019-6-13 12:50
This is a waterfall plot generated from my measurement data file.
The vertical axis is SPL (sound ...
謝謝師兄，非常清楚。我試下開返另一個當日早少少錄低的紀錄，唔駛按generate 都出到喎
johnme 發表於 2019-6-13 12:54
This is a RT60 plot.It is simply a waterfall plot with the SPL axis removed.
It tells you how s ...
如果師兄有心捉蟲,
可以再PLOT多D圖.
小弟間屋聲音反射嚴重. hiukong 發表於 2019-6-13 13:01
謝謝師兄，非常清楚。我試下開返另一個當日早少少錄低的紀錄，唔駛按generate 都出到喎
...
你SET返右手邊個"LIMIT":
FREQUENCY: 20 - 20000
SPL: MAX 100
SPL: MIN 40
應該張圖會好睇D
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