A decibel dB(A) is a unit of measurement that indicates how loud a sound is. Humans can hear. 8 best online hearing tests. 55, Percolating coffee-maker.
To pass a blind test, you will need to perform 10 trials at least, obtain a high score and reach a high confidence level: 95% is standard to rate statistical significance. It means that your score outperforms random guesses by 95%. There is still a probability that you just got lucky though, 5%.
To reduce such probability to 1%, keep testing until you reached a confidence level of 99%. If you didn't pass this test, try with a lower dynamic range difference.
Change the target on the top of this column. Take up the challenge. Find the smallest difference in sound levels you can detect. The Level Series:. Find the highest frequency you can reliably hear.
The Frequency Series:. Find the smallest difference in pitch (frequency) you can hear. The Pitch Series:. Find the shortest timing difference you can reliably hear. NEW The Timing Series:.
Find the highest dynamic range offered by your listening environment. The Dynamic Range Series:. Do you have the absolute hearing ability?
The Perfect Pitch Blind Test:. Are your ears sensitive to Absolute Phase? The Absolute Polarity Blind Test:. Can you hear a difference between 16-bit and 8-bit audio files?
'Decibel X' is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? 'Decibel X' will help you answer all of those. WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS: - Trusted accuracy: the app is tested and pre calibrated for all Apple devices.
I’ve used a couple sound meter apps over the last few years along with a commercial quality sound level meter. I would put this up there with the best of what I’ve used.
This review is for the purchased, “pro” version of the software. That I can pay $4.99 and use the processing capabilities of my iPhone in leu of spending $150+ on a professional, stand-alone meter blows my mind. The level of detail shown in the various portions of the screen offer a broad range of information to the user. You get both numerical and graph output as well as dial analog output of minimum and maximum readings, duration, etc. One quibble is that when I pause the meter and reset it, it asks if I really want to, which is okay, but immediately restarts the sound reading, even if I don’t want it to. Also, I’d like for a reset to take the meter back to “0”.
It restarts at the prior average. I would like to see these twin issues corrected, and I’d then give the app 5 stars. The app name is dB, dBA Noise Meter but what the developer doesn't tell us is that the app only reads Z-weighted decibels (dBZ) and not A-weighted decibels (dBA) in the free version.
All the guidelines and standards say to measure noise levels in dB(A) as A-weighted decibels correspond to human hearing. So it's really misleading to the public who don't know any better. DB(Z) levels are typically 10 decibels or more higher than dB(A) so people are always getting the wrong readings, unless they purchase the A-weighted portion. No explanation is provided, it's truly a disservice to people who think they're getting a good reading of their noise environment. Remember, a 3 dB increase in level means double the energy that reaches the ear, so 10 dB at the ear is a huge difference. Developer should make this information available to the public.
They benefit from their top ranking on the app store but forget they are spreading misinformation by not explaining to the public the difference between dBZ and dBA. I will gladly pay $10 for an app that provides readout in A-weighted decibels. This is a great tool for audio enthusiast and semi pro apps. How about this developer.
What if you had a filter for the audio enthusiast that instead of showing air plane, riveter, streets noise, etc, it showed whispering, quiet conversation, normal conversation, public speaking, quiet church music, typical church music, loud church music, Jazz, Orchestra, Country Music Concert, Rap Music, Rock Concert. Each of these have associated typical levels such as. 6067 Quiet Conversation 6770 Normal Conversation 7072 Public Speaking 8292 Quiet Church Music 9295 Typical Church Music 95102 Loud Church Music 115125 Rock Concert Etc. You get the idea These are all subject to I individual styles and preferences but the ideas is to get close, some type of base line for people who really have no idea what they’re doing but they knobs anyway (and you know who you are).
This is very common in church music and small clubs where speakers mics are either so soft people lose interest or so loud it’s annoying. Or when the band is so soft it ruins the mood or so loud it’s dangerous to your ears.
Many churches have no idea what is appropriate sound levels or what is borderline dangerous. I think this might be very helpful.
Compatibility Requires iOS 9.0 or later.