I'm wondering if anyone had tried PokcetRTA Pro for audio analysis and could give me some feedback on it. Thanks!!

Hey there,

It is one of the first app's i install on my pda. I love this program. the major limitations are the internal microphone of the axim's are not all that great. But I use an external mic plugged into the audio jack, and that brings the frequency response back up.

The internal mic has a horrible response on the bottom end. Basically stops giving proper response below 500 hz.

So if you are planning on using this as a professional RTA device, it might not work well, but for personal use, checking things like DB's in the office, or my car stereo, it is great.

Plus it comes with a desktop version as well so it really is a great app. 4pockets are great developers.

It is pretty darn good.

Jay Pearson ccna

Thanks for the info. I have the plug too for a mic through the audio jack. Could it be semi-pro with a quality external mic? Thanks!

well i have worked with pro spectrum analyzers and this one is good enough. With a good mic, you could easily get really good readings for places like your car or external recordings. It has the best features if you ask me, and has great response. Some of the others just do not respond well.

It is a quality product, and you could definitely use it for serious readings, just do not give to to a top-quality pro and ask what they think. they will laugh as it doesn't cost $5000.

Jay Pearson ccna

Hi,

PocketRTA pro is excellent software. The problem I've had was finding a PDA or SmartPhone with a good quality audio chain (including A/D conversion). Computer makers are of course not marketing to audio people, as they publish ZERO specs for audio. Dell didn't even bother to tell consumers that the AximX50 & X51 have external audio input capability via the headphone jack (used in conjunction with a 4 conductor 1/8 inch plug). I have no experience with other PDAs, but have found that the AximX50/51, for has relatively poor performance as compared to consumer audio gear even. Output frequency response is roughly +and- 3dBm from 20Hz to 2kHz; 6dB down at 3kHz, and about 11dB down at 10kHz. Even more significant in the context of trying to use the X50/51 as a sound measurement tool platform is the input response: Roughly + and - 3dBm from 400Hz to 8kHz, with high end response rolling off sharply at just above 8kHz (12dB down at somewhere around 8.2kHz). My experience so far has been that the PocketRTA software performs wonderfully, rather it is the audio chain of the PDA where weakness lies. If there are any engineers out there who are aware of a fix, I'd love to be enlightened! :-) I'm toying with the idea of taking my PDA apart & looking for any RC filter component on the front end that I can bypass. In spite of this apparent frequency response issues with my Dell, the PocketRTA Pro calibration mode allows one to compensate for frequency response error, so I will be experimenting with that and comparing performance along side SMAART Live to see if I can get this PDA thing in the ball park. I would add that the PocketRTA automatic frequency identification feature with numerical display is just amazing to have when setting up PA systems too.

Sky

PS
If you want to use PocketRTA in conjunction with PDA to get sound pressure level measurements, then you will want to use a calibrated SPL meter or some other suitable reference to set it up. Check out the help file on their site: 4Pockets.com - Support. Best PDA games, Pocket PC games, Windows Mobile games, SmartPhone games by 4Pockets.com ...................................games for Pocket PC's, smartphone, pocket pc, pocketpc, pocket, pc, ipaq, axim, dell, hp, games, wm5, w

PocketRTA has AB& C weightings, so once it's set up, it shoud be great!