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Products => Test Equipment => Topic started by: tozitom on May 15, 2019, 10:23:56 am

Title: ComTEKK SINAD meter
Post by: tozitom on May 15, 2019, 10:23:56 am

hi forum,
has anyone tested this app? I've been working around with it, with free 30 days trial version and wonder if anyone has any axperience? is it accurate? As I don't have a SINAD meter (yet), I just want to know more about it.

Thanks

Title: Re: ComTEKK SINAD meter
Post by: Rerouter on May 15, 2019, 10:47:33 am

Cannot speak for that app at all, but on the principle of how higher end equipment measures it, it seems within the scope of what a phone or similar device could process, seeing as it seems to mainly use digital filtering and process based on a ADC data feed, with unless I am mistaken no significant hardware in the path, however where I would take caution is that I am not sure with modern phones you can ever access the true "RAW Feed", for the internal microphone, I would assume its run though atleast some level of filtering before its handed to the application which may alter the readings your expecting

At a minimum you could likely also approach this with a PC's mic in, and run an android emulator to allow you some better hardware in the mix,

Best reference I was able to dig up for how the measurements are done was below.
http://www.miko.hk/IFR/885.pdf (http://www.miko.hk/IFR/885.pdf)