- Speaker tests.
- Subwoofer tests.
- Bass test
- Audio amplifier tests.
- Equalizer fine tuning.
- Car audio tuning
- SPL competitions
- Music instrument tuning
- Frequency response analysis
- As a infrasound or ultrasound source
- Subwoofer crossover tuning
- Loudspeaker breakup
- Taking a hearing test (test your friends and family).
- Testing your new headphones (can they output 20Hz as specify in the box?)
- Sound Wiki: The app teaches the user the use and names of the various sound ranges.
- To create relaxation and meditation sounds.
- Some users use it because of tinnitus. This app can help you finding the tinnitus frequency.
- As a noise mask (pink and white noise)
- Solid, double precision, real time, accurate, wave generator (64-bit precision IEEE 754 floating point engine)
- 16 bit PCM encoding (CD quality), PCM 32 bits floating-point format on Android Lollipop 5.0+ devices.
- Sampling rate at 44100 (CD quality) or 48000 Hz (automatic native DAC detection!)
- Tone generator
- Infrasounds generator
- Bass generator (low frequencies)
- High frequencies generator
- Ultrasound generator (only limited by your phone hardware)
- Function generator (sine and square waveform)
- Sweep tone generator (linear or logarithmic for musicians)
- Real time manual frequency increment or decrement (accurate, without pops and clicks)
- Real time Binaural Beats generator
- Sweep loops (continuous, with no lag, no clicks)
- Second low frequency oscillator LFO for amplitude modulation
- Time span selectable
- White noise generator
- Pink noise generator
- Runs in background
- Save favorite tones and sweeps in a list for future use (PRO version)
- Precise left/right channel volume control
- Possibility to invert one channel for cancellation effects.
- No ADS!
- No excessive PERMISSIONS !!
- PRO version option for the users that want to support the future development and maintenance of the app.
This app in only available in the Google Play Store. If you are reading this on another site, do not download the app, it may be an old version, and is not authorized by me. Go to the Google Play please.
- In-app purchases: this permission allows users that want to support the future development and maintenance of this app to upgrade to PRO VERSION, paying a small fee, and without installing a new separate version. This process is the new trend in phone apps. This is a one time purchase only.
- Internet access: This is used only by Google Analytics module, so i can better understand what features are being used.
24 KHz is only possible in phones with a 48KHz sample rate DAC. Some very expensive phones do not have such a DAC. This is a hardware limitation.
Intellectual Property Rights
This sofware is protected by copyright laws, intellectual property laws, international conventions, and other proprietary rights and laws. You may not copy, modify, publish in other sites, transmit, participate in the transfer or sale of, create derivative works based on, distribute, perform, display, or in any way exploit, any of the Content, software, materials, or Services in whole or in part.
Any redistribution or reproduction of part or all of the contents in any form is prohibited
You may not, except with our express written permission, distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system.
В программе используются формулы из учебников советских специалистов. И проверенны на личном опыте.
Данный инструмент не претендует на константность своих расчетов. Но может помочь в ситуации когда нет под рукой ноутбука с мощной программой.
Желаю всем самых низких частот))).
The types of waves implemented are:
* Sine Wave
* White Noise
The sampling rate used is 44.1 kHz and the output is in MONO, 16 bit PCM.
Keywords: Tone, Signal, Sound, Waveform, Sinusoidal.
Recommended by "Sound and Vision" magazine.
Features 1/1, 1/3 & 1/6 octave RTA modes, Leq (wideband, Octave, variable duration), RT60 (wideband, Octave), Spectrogram, Peak frequency, Fast, Medium & Slow filters, Flat & A/C Weighting and film industry X Curve, Averaging, SPL Chart Recorder, Noise Criteria, White/Pink Noise, Sine, Square, Triangle, Sweep, Ramp and Impulse signals & loudspeaker polarity checker, L/R select. RTA Store & Load, Hann windows, "Keep Screen On", pinch to zoom, scroll to center.
Exclusive ISO 1/3 Octave Calibration - correct for your phone's microphone response. Octave calibration discs are moved up or down to obtain a flat response, and match the overall SPL to that of an external meter. Save/Restore of Cal files (Dayton Audio iMM-6 also supported).
Use: home theater, audio engineer, car audio, etc
AudioTool FFTs sets of samples recorded at the microphone. Aliasing reduced by Hann windowing. SPL calculated in realtime. Spectra may be saved as files on the SD card, then loaded and displayed with the live spectrum. The "Store" button stores the current live spectrum - "Load" shows a list of stored spectra to select.
To hide the buttons, tap the screen. To restore them, tap again. To zoom the scale, pinch the screen. To move the scale, drag it up or down (left or right).
The deciBel meter uses IIR filters and exponential averaging to calculate Flat, A and C weighted response at speeds of Fast, Medium and Slow speeds.
A pair of cursors can be shown on the RTA and Chart Recorder displays: each can be moved to any position, and will display the SPL & time/frequency values there. Initially, both cursors are positioned mid-screen - simply drag them to a new position with the fingertip. The cursors can be turned on and off in the Menu.
The loudspeaker polarity checker can be used to check whether a loudspeaker is wired in phase: connect the AudioTool output to the speaker under test, select "Polarity" from the signal generator screen, then return to the RTA screen. If the speaker is out of phase (polarity reversed) AudioTool will show "Pol ---", otherwise "Pol +++" if the speaker is in phase.
The Noise Criteria (available from the Menu) function shows a set of NC contours overlaid on the 1/1 Octave RTA display and the calculated real time current NC value is also shown.
The Chart Recorder shows a moving trace of the SPL measurements over the last few minutes.
RT60 measurements can be made by starting the RT60 component using the "RT60" button, and then using a loud clap (or similar) to trigger the measurement. RT60 can also be used with Pink Noise from the AudioTool generator. RT60 times measure how much reverberation or echo there is in a room or auditorium.
The Signal Generator generates White and Pink Noise, Sine, Square, Triangle and Ramp waves, Sine Wave Sweeps and Impulses. The generator uses multiple cycled buffers, refreshed randomly so ensuring truly random White/Pink noise. Pink Noise algorithm uses Kemmet's method to adjust White into Pink.
The frequency accuracy of the generated periodic signals is typically around 1%. Sine wave fidelity is good throughout most of the audio range. Other signals' leading and trailing edges show ringing and decreasing frequency response artifacts in the upper ranges, depending on the Android used.
Please consult the online manual for complete descriptions of the AudioTool features:
Please join the friendly AudioTool Discussion Group to request features, find Calibration files, or report problems. Feedback is always welcome:
Disclaimer: AudioTool's performance depends on your Android hardware, and is not guaranteed to meet any audio measurement or safety standards.
Our decibel meter uses your built-in microphone to measure sound volume in decibels (dB) and also displays samples on graph.
NOTE: Microphones in most devices are aligned to human voice and the maximum values are limited by the hardware. Very loud sounds (~90 dB and more) may not be recognized. Automatic gain control used in some devices may interfere with the operation of this noise meter.
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Features of this SPL meter include:
Analogue Dial with Max and Min indicators.
Weighting – A, C or None . (A weighting filters the high and low frequencies according to how the ear perceives sound loudness). Results are in dB, dBA or dBC depending on weighting.
Averaging of SPL, Clear and Pause buttons.
Octaves and third octaves - Frequency spectrum of the sound.
Graph – Shows the time depedence of the sound.
Autoscale or manual (pinch & pan) Y-Axis.
Relative button – if looking for differences, tapping REL will remove the current averaged value from the reading.
Calibrate option – If you have a calibrated SPL meter or known loudness source, you can use this option to calibrate the meter. (However its still for Indication Only).
More technical details can be found on the website.
With the noise indicator, you can discover how much noise you have around you. Measure the noise at work, in the car and at the football game. With a simple touch you will get:
- A decibel meter that measures the sound level in real time.
- A noise calculator where you can work out how much noise you are exposed to during an 8-hour day.
- Brief information about noise and noise levels.
How does the application work?
Start the decibel meter by pressing the button on the first tab. The measurement continues until you press the button again. You will now receive the average value and the maximum value for the measured time. You can choose to publish the measured value on your Facebook Page by pressing the "Share"- button.
When a measurement is completed, an updated noise estimate will be displayed on tab number two with the average value of the measurement.
Every measurement is automatically transferred to the noise calculator and is joined to an average value for all measurements. You can also manually add the noise level and time directly on to the noise calculator. To obtain an average value for an eight-hour day the total time for the different measured activities needs to be eight hours. Pressing the "Reset" button resets the noise calculation.
The application is tested on the following devices:
- Samsung Galaxy SII
- HTC Desire
- HTC Desire HD
- HTC Wildfire
- Sony Ericsson Xperia ray
The application is not the equivalent of a professional noise calculator, but it gives approximate values. It works primarily on noise levels between about 40 and 100 dB(A). Please note that most devices have microphones that are adapted for frequencies within the human voice range. Because of inherent limitations in different mobile products, the noise level for sounds that are dominated by low frequencies (below 200 Hz) may be underestimated.
Noise Exposure does not meet international or European standard for noice level meters.
The application only gives you an indication of noise levels. If needed, please make more accurate measurements. If you experience unpleasant levels of noise in your workplace, please contact your employer.
Noise Exposure is published by the Swedish Work Environment Authority.
This dB meter design has a darker display with a bright, colorful dB indicator, with the extra feature of slow/fast response to see a more gradual dB response.
Harmonicity is a measure of the sound energy in the harmonics relative to the rest of the spectrum.
Harmocity varies with age, gender & which vowel you pronounce. Higher harmonicity values indicate a purer sound. Whilst lower jitter and shimmer values indicate a purer sound.
This meter is supposed to be used with a continuous consistent sound, e.g. Pronoucing a vowel, or a tone from a speaker/instrument. Rapidly changing tone/sound will give nonsensical output.
FOR INDICATION ONLY. Harmonicity will vary depending on how close the source is to the microphone. Microphone sensitivity varies with frequency and from device to device. Even amoungst scientific literature, it is difficult to find consistency in absolute reported values.
Jitter is a measure of the frequency variation of the sound. The relative jitter is shown as a %.
Shimmer is a measure of the amplitude variation of the sound. The relative shimmer is shown as a %.
Autodetects sound – App will only start measuring when a sound is detected.
Averaging - After 0.7s, the app will start averaging the Harmonicity, Jitter, Shimmer and freqency values. This will continue until the sound is stopped at which point the last 0.7s of data is removed from the averaged values.
Musical Note – The current detected frequency is converted into a note based on western 12 tone equal temperament. Use to tune your guitar or other instrument if you wish.
Pause button – Useful if in a noisy environment and measurement doesn't auto stop.
FFT Spectrum – Autoscaling Sound Intensity between 0 and 2 kHz.
Range: 100 Hz to 2 kHz fundamental harmonic frequency detection.
Internet Permission is for link to website with more info/user guide for app.
The fast fourier transform (size 8192) is performed on the last 0.74s of data to produce a frequency spectrum (0 to 5.5 kHz with 1.35Hz resolution). This frequency spectrum is windowed between 100 and 4 kHz with linear fall offs to zero at 50 and 5 kHz. The fundamental frequency is determined from polynomial fitting to peaks. The harmonic energy is determined from the sum of the FFT signal at the harmonic freuquency plus 8 Hz either side. The noise is the sum of the rest of the FFT. The ratio of harmonic to noise energy is the Harmoicity and is displayed in decibels.
More technical details can be found on the website.
- Display of the average and peak levels with a bargraph and with a numeric LCD display.
Works the iPhone 3,4 and 5, the integrated microphone of the first generation of iphone is not recommended you should use the included headset microphone.
Features of the FREE DDVIP App:
Map & Search
Use “Map a Spot” with your current location to find spots near you OR “List of Spots” to
search all participating bars and restaurants throughout California.
Check out the profile of the spot you choose and use the “Offer” tab to redeem exclusive offers and deals for designated sober drivers. Then share your deal with your friends on social media.
Stay up-to-date on the latest from DDVIP and see what other DDVIPs are saying.
Find A Ride
When you take a break from being the designated sober driver, you can quickly and easily get a sober ride from Uber, Lyft or Curb – all in one place.
*** THE 2015 Hangout Fest Lineup and Map ***
• 2015 Festival Map
No way would we leave this out! How else would you find your way around Hangout Fest?
• 2015 Schedule
Go and make your schedule. You can even set alerts so you don't miss the certain show you came for.
• See the top likes and most scheduled.
Yep we did it. We created an even better way for you to check out everything going on at Hangout Fest.
A brand new way to see all the Hangout Fest tweets and @ reply’s. You can even sign in and post right from the app as well! We even merged Facebook and Twitter together. No need to have to check them at separate times. It is all in one place now. Oh and we made it happen for your personal account too. Try it out.
• Instagram Feed
Everyone's favorite photo sharing service is now built directly into the Hangout app! View all the amazing official Hangout photos posted to Instagram!
The official Hangout app for 2015 is here! Dive on in!
No Shoes Radio: Get live streaming access to No Shoes Radio, Kenny's internet (and now mobile) radio station! Fans can access Kenny’s musical world beyond his hits and “capture the vibe at the tailgate parties, the backstage hallways and the unguarded moments on his tour.” No Shoes Radio includes live performances, dressing room jams and tunes from Kenny’s iPod ranging from reggae, classic and contemporary rock and everything in between. With a set of headphones or a cheap audio cord, you’re ready to take No Shoes Radio with you around town, on your stereo, in your car, on your boat... Wherever you roam, your soundtrack on No Shoes Radio is coming too.
Touring: View tour dates, purchase tickets, invite friends to come along, use the iPhone GPS to get directions and even set your own countdown.
Merchandise: Browse official Kenny Chesney items, from t-shirts to stickers and guitar picks, and buy them with ease.
News: Get the latest info on all things Kenny, including exclusive updates and links to Kenny’s official Facebook, and MySpace.
Twitter: Track updates to Kenny's personal Twitter account, access the No Shoes Radio tweets, and read what other Kenny fans are tweeting about. The app comes complete with an integrated Twitter client, so you can tweet directly from the app with your personal account... without interrupting No Shoes Radio. Jump in and join in the conversation!
Media: See the latest photos and videos from Kenny and listen to your favorite Chesney hits. Check out the fan photos and your Kenny cover songs from YouTube. You can also purchase music and videos direct through the iTunes store.
There are many more features and surprises for you to discover in the Official Kenny Chesney app.
As a gift to the incredible fans who make the music possible, we invite you to share Kenny’s favorite music on No Shoes Radio, customize your background to make the app your own, and enjoy the many features and functions on one of the most innovative apps around... All for free.
Internet Connection Recommended:
This app is designed to be updated often. To make sure you have the most recent photos, videos, news, and more, close and open the app to refresh.
First, make sure you are connected to the internet
It will help you get the latest information directly from Ultra Music Festival, who will be sending push notifications to fans before, during and after the show.
Other features include Facebook and Twitter integration, photos, videos, artist lineup and a fan wall to communicate with other fans across the globe!
User schedule and set times will be available in the next release.
See you at Ultra Music Festival 2015!
Look through all the artists playing at Governors Ball. You can even create a list of your favorite artists by linking them, or add them to your schedule to get the most out of your time there. You can also go into the festival map and look around incase you get lost.
And new this year -- Instagram! View all the official Gov Ball Instagram posts and even share your own photos to Instagram directly from the app!
Gov Ball 2014 is here! Dive on in!
In News and Socialize, be up-to-date on all things related to X Games Austin--latest news posts, social posts from X Games Austin and all their fans.
The X Games Austin app for 2014 is here! Dive on in!
- Create Your Own Schedule: With so many talented bands, chefs, artists, and speakers to see and absorb, it is important that you craft a schedule that is perfect for YOU!
- Lineup: Using our unique, four-pillar interface, you can view every performer and learn about them too. Share what you are most excited about using our easy-to-use social media feature built right into the app.
- Festival Map: Explore our slightly llama-shaped festival footprint using our Map feature. A more detailed, graphic map will be released to the app before the festival begins so check back often!
- Photo Hunt! Follow the on-screen prompts to snap pictures of interesting aspects of the festival for a chance to win VIP passes for Life is Beautiful 2015!
The official app for Life is Beautiful is finally here! Dive on in!
With this handy companion app, view the entire list of scheduled performers, all the amazing wine vendors and shops, as well as all the other great points of interest at Napa Valley. Also, we've included an awesome, built-in Instagram feed to see all the great pictures and moments at BottleRock.
BottleRock Napa is finally here! Dive on in!