2025/02/10 18:00- 512s FFT length, 10 times average, 50% overlap
I summarized the peak frequencies checked by my eye
(Fig.1., Fig.2. and Fig.3.)
166.84375
167.26562
167.8125
168.3125
173.20312
174.28125
176.76562
178.125
178.67188
178.9375
179.59375
179.75 - 180 ??
180.125
180.23438
180.28125
180.60938
180.98438
181.17188
181.9375
182.34375
182.45312
182.92188
183.23438
183.625
184.60938
184.79688
187.53125
189.92188
191.15625
191.375
166.84375 EYIMP 11:01:10
167.26562 NOEYIMP
167.8125 Locked loss when EYIMP excited(Two times)
168.3125 EYIMP 12:20:00
173.20312 NOEYIMP
174.28125 NOEYIMP
176.76562 NOEYIMP
178.125 NOEYIMP
178.67188 NOEYIMP
178.9375 NOEYIMP NOIYIMP NOIXIMP EXIMP 16:41:00
179.59375 NOEYIMP IYIMP 16:28:02
179.75 - 180 ?? POWER LINE?
180.125 NOEYIMP IYIMP 16:15:00
180.23438 NOEYIMP NOIXIMP NOIYIMP EXIMP 13:57:00
180.28125 NOEYIMP IXIMP 16:03:00
180.60938 NOEYIMP NOIYIMP NOIXIMP EXIMP 15:47:00
180.98438 NOEYIMP IYIMP 15:35:00
181.17188 NOEYIMP IXIMP 15:21:00
181.9375 NOEYIMP ??? several exitation in IX and IY
182.34375 NOEYIMP NOIYIMP IXIMP 15:08:00
182.45312 NOEYIMP NOIXIMP NOIYIMP EXIMP 14:59:00
182.92188 NOEYIMP NOIYIMP NOIXIMP EXIMP 14:49:00
183.23438 NOEYIMP EXIMP 14:39:00
183.625 NOEYIMP NOIYIMP NOIXIMP NOEXIMP
184.60938 NOEYIMP IYIMP 14:23:00
184.79688 NOETIMP NOIYIMP NOIXIMP EXIMP 14:14:00
187.53125 EYIMP 13:34:00
189.92188 EYIMP 13:08:00
191.15625 NOEYIMP
191.375 EYIMP 12:58:00
There would be the non violin mode peaks
~180 Hz power line
Three OMC bread resonant frequency *2
~89.6 * 2 = ~179.2
~90.8 * 2 = ~181.6
~91.1 * 2 = ~182.2
We can excite most part of the peaks by exiting the IM P.
166.84375 EYIMP 11/11:01:10
167.26562 NOIXIMP NOIYIMP NOEXIMP EYIMP 12/06:18:00
167.8125 EYIMP 12/07:03:00
168.3125 EYIMP 11/12:20:00
173.20312 NOEYIMP IXIMP 12/06:08:00
174.28125 NOEYIMP NOIYIMP IXIMP 12/05:58:00
176.76562 NOEYIMP NOIXIMP IYIMP 12/05:45:00
178.125 NOEYIMP NOIYIMP IXIMP 12/05:36:00
178.67188 NOEYIMP IYIMP 12/05:22:00
178.9375 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/16:41:00
179.59375 NOEYIMP IYIMP 11/16:28:02
179.75 - 180 ?? POWER LINE?
180.125 NOEYIMP IYIMP 11/16:15:00
180.23438 NOEYIMP NOIXIMP NOIYIMP EXIMP 11/13:57:00
180.28125 NOEYIMP IXIMP 11/16:03:00
180.60938 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/15:47:00
180.98438 NOEYIMP IYIMP 11/15:35:00
181.17188 NOEYIMP IXIMP 11/15:21:00
181.9375 NOEYIMP IXIMP 12/06:55:00
182.34375 NOEYIMP NOIYIMP IXIMP 11/15:08:00
182.45312 NOEYIMP NOIXIMP NOIYIMP EXIMP 11/14:59:00
182.92188 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/14:49:00
183.23438 NOEYIMP EXIMP 11/14:39:00
183.625 EYIMP 12/06:41:00
184.60938 NOEYIMP IYIMP 11/14:23:00
184.79688 NOETIMP NOIYIMP NOIXIMP EXIMP 11/14:14:00
187.53125 EYIMP 11/13:34:00
189.92188 EYIMP 11/13:08:00
191.15625 EYIMP 12/06:29:00 exite 191.375 after stop the excitation (Fig.1.)
191.375 EYIMP 11/12:58:00
