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Old 03-27-2018, 11:02 PM   #1
JMlegacy
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Default This knock monitor software ...

Just curious, has anyone on here used this software yet?

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Old 03-28-2018, 02:14 PM   #2
mrsaturn7085
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Goldwave can do the same thing - I would recommend AGAINST software like this as it attempts to remove the human element from it. Knock monitoring and center freq. selection involves far more than just a lookup table (which is what this is likely trying to estimate).
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Old 03-30-2018, 02:06 AM   #3
JMlegacy
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Quote:
Originally Posted by mrsaturn7085 View Post
Goldwave can do the same thing
Not quite, sir, not quite. Goldwave would be impractical in a tuning session. Does Goldwave filter the audio LIVE, allowing you to hear and see the filtered waveform...LIVE and also set thresholds and allow an audible "KNOCK" sound to be played while you are monitoring other instruments on the dyno?

Quote:
Originally Posted by mrsaturn7085 View Post
- I would recommend AGAINST software like this as it attempts to remove the human element from it. Knock monitoring and center freq. selection involves far more than just a lookup table (which is what this is likely trying to estimate).
Not quite. It's not just a lookup table, the resonant frequency can be calculated. Actually much better control over the knock definition than the TPIC8101 chip in your ECU.
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Old 03-30-2018, 03:26 AM   #4
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Never seen it before, but that's a cool idea. Would be even better with a way to integrate it with RomRaider logs. Real-time knock detection is sort of interesting, but without knowing the RPM and load when it knocked, you don't know which cells to adjust in the fuel or timing tables.

https://gumroad.com/l/tunerknockmonitor
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Old 03-30-2018, 12:22 PM   #5
mrsaturn7085
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Quote:
Originally Posted by JMlegacy View Post
Not quite, sir, not quite. Goldwave would be impractical in a tuning session. Does Goldwave filter the audio LIVE, allowing you to hear and see the filtered waveform...LIVE and also set thresholds and allow an audible "KNOCK" sound to be played while you are monitoring other instruments on the dyno?
Gosh, I should just delete Goldwave then... all my time using it on the dyno in the past must have been useless.

Yes, I do listen to the live audio when inducing knock to take sound clips in Goldwave. The initial filters I use are set with hardware jumpers on an inline amplifier. I do not rely on software filtering unless absolutely required.

Goldwave is used for providing data to your datalogger/ECU (as in, you, the tuner are taking this data from Goldwave and punching it into the ECU software). The ECU is where the heavy signal processing should take place (applying a knock window to eliminate false knock, or a cylinder firing order window for per-cylinder knock using 1 sensor).

Quote:
Originally Posted by JMlegacy View Post
Not quite. It's not just a lookup table, the resonant frequency can be calculated. Actually much better control over the knock definition than the TPIC8101 chip in your ECU.
I have a write-up in another thread based on real-world center freq. selection. You can only estimate this based on engine geometry but when you consider the whole system as installed in a vehicle, there are MANY changes. Read my notes at the following link - doing something as simple as stripping the interior of your car or installing an exhaust can change your center frequency.

https://forums.nasioc.com/forums/sho....php?t=1860711

Quote:
Originally Posted by NSFW View Post
...without knowing the RPM and load when it knocked, you don't know which cells to adjust in the fuel or timing tables.
^ this ^

You can't time sync two separate logging systems. This is why people that install AFR/EGT gauges on the dash expecting to adjust the fuel table later when they see a number they don't like are out of their mind.
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Old 03-30-2018, 02:36 PM   #6
JMlegacy
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Quote:
Originally Posted by mrsaturn7085 View Post
Gosh, I should just delete Goldwave then... all my time using it on the dyno in the past must have been useless.

Yes, I do listen to the live audio when inducing knock to take sound clips in Goldwave. The initial filters I use are set with hardware jumpers on an inline amplifier. I do not rely on software filtering unless absolutely required.

Goldwave is used for providing data to your datalogger/ECU (as in, you, the tuner are taking this data from Goldwave and punching it into the ECU software). The ECU is where the heavy signal processing should take place (applying a knock window to eliminate false knock, or a cylinder firing order window for per-cylinder knock using 1 sensor).



I have a write-up in another thread based on real-world center freq. selection. You can only estimate this based on engine geometry but when you consider the whole system as installed in a vehicle, there are MANY changes. Read my notes at the following link - doing something as simple as stripping the interior of your car or installing an exhaust can change your center frequency.

https://forums.nasioc.com/forums/sho....php?t=1860711



^ this ^

You can't time sync two separate logging systems. This is why people that install AFR/EGT gauges on the dash expecting to adjust the fuel table later when they see a number they don't like are out of their mind.

OK I read that post. Nice. Finding.

What you have found is something this software also accounts for in the high frequency mode Plex knock monitor ($1000) also accounts for this too. Sometimes it's harmonics (2x the center frequency).



As per the log sync the software provides system time in the log file it creates, so I believe you can match the log from RR to that of this software.



But You will have to select absolute time in RR log settings. There is currently development on this software to get RPM and MAP but not sure about romraider, does romraider have an RPM output via Serial? That should be easy to code in.
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Old 03-30-2018, 08:14 PM   #7
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Or you can just use a datalogger that already incorporates the knock signal. No matter how you cut it, this software package is playing catch-up with others that are about a decade ahead in development.

I'm sorry, but matching up a time stamp between 2 independent logs is NOT how you sync them up. If you had a synchronized RPM signal, this would be a good start but you've still got a mountain of work ahead of you if you are trying to do this manually ('this' being, looking at two independent logs and trying to match them up).

Or, again, you could just use a proper datalogger that does this all internally.

Are you involved in the development of this software? You seem to be fighting pretty hard for them...
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Old 03-30-2018, 09:09 PM   #8
JMlegacy
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Quote:
Originally Posted by mrsaturn7085 View Post
Or you can just use a datalogger that already incorporates the knock signal. No matter how you cut it, this software package is playing catch-up with others that are about a decade ahead in development.

I'm sorry, but matching up a time stamp between 2 independent logs is NOT how you sync them up. If you had a synchronized RPM signal, this would be a good start but you've still got a mountain of work ahead of you if you are trying to do this manually ('this' being, looking at two independent logs and trying to match them up).

Or, again, you could just use a proper datalogger that does this all internally.

Are you involved in the development of this software? You seem to be fighting pretty hard for them...
Busted. I am. And as one very familiar with subaru tuning i was curious if anyone in this community was using it.
I'm considering using the ELM device as an option to get RPM and map, this however does not work on my subaru (JDM, not sure why)
As well as an independent device that will tap into the hardware for map and engine speed.
Device is currently being tested, and most of what we would useful for tuning be featured in that version.

This will be more useful to the megasquirt / ECtune/speeduino or any ecu usually with no knock feedback.

I love your feedback though,

Last edited by JMlegacy; 03-30-2018 at 09:26 PM.
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Old 03-31-2018, 12:18 AM   #9
NSFW
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RomRaider is open source and extensible... If this and RomRaider were to communicate in real time you could have a column for it in RR logs.

I think all of the current logger plugins use serial, but you could probably do it with a localhost TCP/IP connection instead. Have this thing listen on localhost:1234, and spit out a stream of "knock count" numbers to whoever connects.
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Old 09-15-2018, 03:52 AM   #10
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Hello,

A new release is available. Now there is Boost, AFR and RPM reference.

There is a demo download.
http://tunernerd.com/download/knock-monitor-pro-demo/
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Old 03-09-2019, 08:48 PM   #11
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Delete..
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