Hello all cue makers, scientists and anyone curious about cue hit characteristics.
During the development of the accelerometer for pool stroke analysis, I noticed reflections in the Z axis acceleration data due to reflections rattling up and down the cue after the cue ball was hit. I suspect these signals have something to do with cue construction or "cue hit". Things like joint material, ferrule material, tip type, wood type etc etc. I wrote a program specifically to analyze those signals. The program and hardware allows for acquiring the Z axis data from the cue hit, then takes the time domain data and does a Fast Fourier Transform of the time data to the frequency domain.
The following image shows a typical cue hit being analyzed. The top signal shows the raw data as captured. The middle signal is the data thats been trimmed for analysis. The bottom signal is the frequency components of the trimmed data. Markers have been applied to show the frequency peaks. Note the marks at location 5, 15, 171, 252, 334 and 409 hz. Those peaks are signal frequencies that are reflected up and down the cue after the cue ball is hit.
I am not saying I understand these signals or frequencies or how they relate to a cue's hit. The time domain data alone maybe useful by itself. I created the program for the curious cue maker or persons interested in quantifying a cue's hit. Maybe the information is useful, maybe not. Years ago I remember seeing a documentary about the tonal analysis of a Stradivarius violin and that got me thinking about this type of frequency analysis. Maybe this tool can help cuemaker's analyze and create cues that hit similar to the old classics or make thier own cue's hit with a designed repeatible hit. Imagine a cue maker is ask by a customer for a cue with a hit similar to a Super Dupper brand cue. That Super Duper brand cue should have a specific hit frequency spectrum. Building a cue with a specific hit MIGHT be easier to build if the cue maker knows how his and other cue designs hit.
This is something new for the pool world and cue makers, I'd like to see this new hardware and software utilized to hopefully improve cue making.
Initially I will give away the program for free with the purchase of the accelerometer hardware that is required to utilize the program. The cost of the hardware and software program that runs on a Windows pc is $100.
Let me know if you need more details, your interested or have questions.
Cheers
Bob
During the development of the accelerometer for pool stroke analysis, I noticed reflections in the Z axis acceleration data due to reflections rattling up and down the cue after the cue ball was hit. I suspect these signals have something to do with cue construction or "cue hit". Things like joint material, ferrule material, tip type, wood type etc etc. I wrote a program specifically to analyze those signals. The program and hardware allows for acquiring the Z axis data from the cue hit, then takes the time domain data and does a Fast Fourier Transform of the time data to the frequency domain.
The following image shows a typical cue hit being analyzed. The top signal shows the raw data as captured. The middle signal is the data thats been trimmed for analysis. The bottom signal is the frequency components of the trimmed data. Markers have been applied to show the frequency peaks. Note the marks at location 5, 15, 171, 252, 334 and 409 hz. Those peaks are signal frequencies that are reflected up and down the cue after the cue ball is hit.
I am not saying I understand these signals or frequencies or how they relate to a cue's hit. The time domain data alone maybe useful by itself. I created the program for the curious cue maker or persons interested in quantifying a cue's hit. Maybe the information is useful, maybe not. Years ago I remember seeing a documentary about the tonal analysis of a Stradivarius violin and that got me thinking about this type of frequency analysis. Maybe this tool can help cuemaker's analyze and create cues that hit similar to the old classics or make thier own cue's hit with a designed repeatible hit. Imagine a cue maker is ask by a customer for a cue with a hit similar to a Super Dupper brand cue. That Super Duper brand cue should have a specific hit frequency spectrum. Building a cue with a specific hit MIGHT be easier to build if the cue maker knows how his and other cue designs hit.
This is something new for the pool world and cue makers, I'd like to see this new hardware and software utilized to hopefully improve cue making.
Initially I will give away the program for free with the purchase of the accelerometer hardware that is required to utilize the program. The cost of the hardware and software program that runs on a Windows pc is $100.
Let me know if you need more details, your interested or have questions.
Cheers
Bob
GLWS!