Hello,
I create that thread to present you Frequency Generator, a simple tool to generate free tones between 1Hz and 24000Hz for a duration of your choice. Frequency Generator is available on the Google Play Store in two versions :
- Free supported by Ads : https://play.google.com/store/apps/details?id=com.ssaurel.frequencygenerator
- Paid without Ads : https://play.google.com/store/apps/details?id=com.ssaurel.frequencygenerator.pro
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You can discover Frequency Generator in action on YouTube :
Use the slider to select the frequency of your choice, then use the second slider to select the duration of the tone you want to generate and finally you have just to click on the play button to play the tone which is a sine wave signal.
Frequency Generator is a simple and efficient tool covering the following use cases :
- Testing speakers or audio devices
- Make a quick test of your Hearing by determining the range of frequencies you are able to hear. For this use case, a more complete solution can be found with Hearing Test : https://play.google.com/store/apps/details?id=com.ssaurel.hearingtest
- Experiencing the acoustic beat phenomenon. What is the acoustic beat phenomenon ? The beat phenomenon is an interference pattern between two sounds of slightly different frequencies, perceived as a periodic variation in volume whose rate is the difference of the two frequencies. To experience this phenomenon, you have just to launch Frequency Generator on two devices and then generate a frequency of 560Hz on the first and 563Hz on the second. Like that, you will hear an acoustic beat of frequency 3Hz. Musicians commonly use interference beats to objectively check tuning at the unison, perfect fifth, or other simple harmonic intervals.
- Make some jokes to your friends or in the public transports
Some screenshots :
* Use the slider to select frequency and duration
* Generate your free tone by clicking on the play button
You can also download Frequency Generator directly on the SSaurel's Server : https://www.ssaurel.com/frequencygenerator/FrequencyGenerator.apk
Don't hesitate send me your feedback or give me your ideas to improve Frequency Generator in comments.
Thanks.
Sylvain
Related
Android devices became so powerful that they should easily be able to run digital room correction software.
The benefit of being able to run digital room correction (DRC) on an android phone, is that it will allow correcting for acoustic anomalies in car audio playback.
When you play audio in your car, the frequency response that you hear is not flat from 20hz to 20khz (as it should). The speakers/amplifier/HU/car-acoustics worsen the frequency response.
A digital room correction software can dramatically help to make frequency response much closer to ideal in your car. So your audio will sound much much better.
In order to do DRC in your car, what you need to do first is measure the frequency response in your car from 20hz to 20khz (using a log sweep and a microphone. There are many free softwares that will allow this). Then you feed the frequency response recording of your car, to the DRC algorithm (there is a free one that I use), and it will create a filter. If you run your music through this filter, it will solve many of the frequency response anomalies that you have in your car. It's like the best equalizer device you can think about.
In use DRC in order to correct the acoustics of my home audio system. Here is an example of what DRC did for my home audio system:
This is the frequency response that I got in my room before using DRC (I am showing here only the frequency response below 200hz. Ideally it should be flat, since I'm playing a log sine sweep where each played frequency has the same SPL level):
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You can see all the dips and peaks. The sound is not very good when your frequency response looks like this.
After I fed this information to the DRC algorithm, it created a filter to correct the frequency response anomalies. This is how the frequency response behaves in my room after applying the DRC filter:
Yes, a dramatic effect !!
DRC can do this for car audio too. The only problem is that you need to run the music through a software that can do real-time convolution (or in other words, to take the DRC filter and use it to change your music in real time). For windows there are several music players that can do this (like Foobar2000), but for Android I couldn't find a real-time convolver. If there was a real time convolver for android, we could play our music through the android device (conneted to the car audio system) using the convolver, and get much much improved sound.
Does anyone know of a real time convolver for android ?
For more reading abour DRC:
http://drc-fir.sourceforge.net/
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★★★Test your mobile hardware performance CPU , RAM , I/O memory , Graphics, Internet connection and share your score with your frends on social networks. ★★★
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New version released ,check out it google Play !
Newly customized user iterface
Hi guys, I have been asked to merge Weed Scale and Diamond Scale topics, so let go!
1) Weed Scale (FREE) - great scaling app (yes, it really works!). Originally designed for weighing weed but it works pretty cool for anything withing range 1-5 g (~0.035 - 0.17 oz). It uses both accelerometer and gyroscope for measurements
GET IT FROM GOOGLE PLAY : https://play.google.com/store/apps/details?id=com.weedscale
PROS:
- it's free
-results are pretty decent
CONS:
- we had too put some ads in to stay on the market and keep developing cool apps
- ads requires permissions; ads networks are using all kind of ads - sms, push etc. (so their permissions may look realy strange)
SUMMARY:
- it's FREE - why dont give it a shot?
- over 1.4 mil downloads
- 6.5k reviews with avg. 4-star rating - this means somthing
GET IT FROM GOOGLE PLAY : https://play.google.com/store/apps/details?id=com.weedscale
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2) Diamond Scale (PAID) - redesigned version of Weed Scale. UI has changed, accuracy has changed and ads has gone ! It uses only gyroscope for measurements. Results are much more accurate, but works only with new (equiped in gyroscope) devices. Works good within range 0.5-7 g (~0.017 - 0.25 oz).
GET IT FROM GOOGLE PLAY : https://play.google.com/store/apps/details?id=com.diamondscale
PROS:
- ads free = no strange permissions
- results are even better (yes, it's possible!)
CONS:
- you must pay for it (show us some love )
- it only works with gyroscope devices
- also available for iOS devices (https://itunes.apple.com/app/diamond-scale/id649265345?mt=8)
SUMMARY:
- if you like Weed Scale you would fall in love with Diamond Scale
- fresh app; not so many downloads so far but the avg. feedback is pretty decent - 4-star rating
GET IT FROM GOOGLE PLAY : https://play.google.com/store/apps/details?id=com.diamondscale
PROMO VIDEO: http://www.youtube.com/watch?v=NicGAslR6rQ
FUNNY DISCLAIMER : http://www.youtube.com/watch?v=H_QZl4femLc
app was updated!
legalize it !
Hey all!
My first ever native mobile app! Competing has always been close to my heart. I competed a decent amount in martial arts and one thing I noticed is that, the industry does not utilize the mobile technology enough. At least in the management area. So I tried to make a web app specifically for it. Unfortunately there wasn't any interest for it.
A few things I noticed why:
- If they rely on a web app and lose internet connection then they're screwed.
- Tournament managers want native mobile application that has online capability
- I can't get anyone to try out my web app for their own tournaments
Solution:
- Make a native app that can perform offline
- Make the app applicable not just for martial arts. Make it usable by other sports (casual darts / billiard games)
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About the app (Where it is right now):
- Creates a single elimination bracket
- Manages all the participants added in all brackets made
- Pure offline except when registering the user on first use.
- Auto seeds registered participants
- Limited to 4 brackets and max 8 participants per bracket
Todo:
- Get the first version stable
- See if there's any need for multiple bracketing types
- Follow it up with online capabilities by utilizing web app api
- Double Elimination brackets
Current issues:
- Once you upgrade to the next version it would clear the cache automatically to prevent issues that will make the app crash. This is more for database changes that happen often and fast. I don't know how to deal with it atm.
- The bracket view is slow. I'm not sure how to make it fast.
- The UI of the bracket , I'm not sure how to make it look like you need to tap the match area in order to view the match results/details
Download:
play store: < I can't post outside links >
Thanks for looking!
Make your own amazing music track! Take advantage of the great library of high quality sounds in different genres of music. Make beats, mix music and use studio quality effects. Record your performance or compose song from scratch!
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*
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Google Play: https://play.google.com/store/apps/details?id=com.fspdev.groovepads
Visit our website:* http://fspdevs.com
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Your thoughts, feedback and suggestions help us make our app the best it can be! Write us:
[email protected]
Crashes on open, pixel Oreo 8.0. do you need logs? Or not support Oreo yet?
tiboric said:
Crashes on open, pixel Oreo 8.0. do you need logs? Or not support Oreo yet?
Click to expand...
Click to collapse
We will be grateful for logs from crash. Our email: [email protected]
Feedback
We are counting on your feedback This thread is also a place to request features. We will do our best to release it as soon as possible
Groove Pads 0.7.6 released. Android oreo issue and many others fixed!