Stylus Pen for iPad 9th&10th Generation-2X Fast Charge Active Pencil Compatible with 2018-2024 Apple iPad Pro 11"/12.9"/M4, iPad Air 3/4/5/M2, iPad 6-10, iPad Mini 5/6 Gen-White
$26.99 (as of December 24, 2024 01:15 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)[App] Spectrum Analyser
Audio spectrum analyser for your microphone.
64 up to 8192 frequency divisions (128 to 16384 FFT size).
22 kHz spectrum range (can reduce down to 1 kHz for higher resolution).
FFT Windowing (Bartlett, Blackman, Flat Top, Hanning, Hamming, Tukey, Welch, or none)
Auto-scale or pinch to zoom, drag to pan.
Linear or logarithmic scales.
Peak frequency detection (polynomial fit).
Averaging, Min and Max.
Save CSV data files (uses Write External Storage Permission).
Free or snap to peak cursor.
Octave Bands – Full, half, third, sixth, ninth or twelfth bands.
Weighting – A, C or None (A weighting filters the high and low frequencies according to how the ear perceives sound loudness).
Musical note indicator (green if within 5 cents, orange if within 10 cents).
Auto-scaling microphone input trace.
For best response on slower devices, keep the FFT size low.
More detailed explanation available on website
Spectrum Analyser user reviews :
Useful but the screen update interval is too slow. Others manage 30 frames per sec for a smooth graph. Its running 2 frames/sec no matter how far up/down I set various options. Buttons on the control panel too small to use, must have been programmed on a low res screen. Adjustable dB and Hz axis is useful as is C, Z and A dB weighing. But, it shows no response below about 50Hz even though my mic works far below that. It could be a nice app but it needs updating.
Fantastic. Had the basic options that the 623 other analyzers don’t. This app allows almost everything from the bundled fft library. I got it for custom frequency ranges, but I think it’s overall one of the better frequency analyzers. 90% of what’s available on the play store is bad AliExpress-like UI loaded with advertisements (spamware?) and untrustworthy garbage.
As far as a spectrum anilyzer goes it does alright but you can’t adjust where the display line sits. Either nearly maxed at top or mostly unseen at the bottom unless you turn up the sound? Using it to set up speakers for flat output will require a source playing test tones since this has none built in. The auto leveling is hindering it’s usefulness as a testing tool, you’re limited in source volume output.
This is a useful and fun app! I can do basic stuff, to show others, or monitor a longer-term project. It enabled me to show a friend why his dog hated the new electronic nail-clipper (vibrations btw!), check speakers, and check a room’s acoustics.
Super sweet! Hearing different pitches of tones throughout the day? Check if you’re crazy, or if in fact that crazy poop is real…. just sayin… P.s. it works, might trip you out a bit. But it works.
Its a one star. Thought this app could also record noise frequency as well as monitor. There aren’t clear instructions and information. Felt bitterly disappointment.
Could have been an excellent tool but the disastrous pinch zoom implementation completely ruins the usability
Good quality app, workd as advertised and not bombarded by ads during use. 4 star+
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Actually decent picked up 120 hz transformer noise. Good for A-B comparisons
Best on a tablet. Text is too small to read and buttons too small to tap on smartphone. Data is lost upon rotate landscape/portrait. Not enough exponential averaging between FFT bins. No way to calibrate app with cal file, but you can export data as CSV file and then do your own calibration vs known calibration mic in a spreadsheet.
If it has option to DFT the earphones audio it will be damn perfect
This is an amazing, instructive, flexible, technically advanced and thoroughly well designed app. I could spent hours without end just using it. The only regret I may have is that perhaps my Samsung Duos display is a little bit small for doing justice to all the settings and capabilities of this app. A five Star indeed, one of the best ever!
This is a great app! If you know spectrum analysis, this does it very well. It’s easy to rack your peak Hz, max amplitude and ID basic sound signatures. Highly recommend.
Only additions I’d like to see are a calibration utility for stock mics, and an external mic option with same calibration ability. I’d pay for those in a heartbeat. Bad reviews for crashing: sorta OK, device may not be powerful enough to run full steam. Bad reviews for “not what I expected(what the hell did think when you dl’d an FFT app!?!)” “Too complicated(again, see above)” you just dl’d lab grade SW for FREE!! Wish it had external input/cal options for vibes like in/s², in/s, in, for accelerometers.
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