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Transforming Android devices to perfect real-time audio equalizers...

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/

[APP][4.1+] SingPlay - MP3 Convert to Karaoke MR with Reocording your voice

Hey guys!
introduce great quality MP3 Convert to Karaoke MR app
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Description
Sing. Record. Share.
With SingPlay, you can sing and create your own unique recordings with your favorite songs and share them with your friends, family and the world.
It’s so easy to get started. There’s no need to download any special tracks or stream music from YouTube. SingPlay automatically converts the music on your smartphone into Karaoke tracks while reserving the original quality of the music; there are no MIDI sounds or cover versions with this app! Browse through your music, pick the track you like and start singing. If you want to document your performance, just press the record button. Create your track in either Original or Karaoke Mode; Original Mode retains the original vocal while Karaoke Mode features only the instrumental version of the track. Once you’ve finished your performance, listen to your recording and make edits to your sound with SingPlay’s volume and voice controls. If you’re happy with your creation, share it on Facebook, YouTube, Google+ and many more.
Download SingPlay today and get started!
[Play with your songs!]
* Enjoy singing with or without the original vocal
* Practice singing with easy transport controls
* Record your singing or instrumental performance with the original music in the background
* Record only the part of the song that you like
* Adjust the tempo and pitch as you desire for your best performance
* Share your recordings on Facebook and Google+ with the touch of your finger
[Main Features]
* Karaoke Mode: Instrumental music without the original vocal
* Recording
* Pitch Control (+/- 4 semitones)
* Tempo Control (+/- 4 steps)
* Fast Forward / Rewind
* Reverb (Echo) effect on your recording
* Separate volume controls for Music, Vocal, and Reverb
* No internet connection necessary
* Original music sound is reserved; no MIDI sound or cover version
[Supported OS / Devices]
Smartphones with Android 4.1 (Jelly Bean) or above (including 4.4 KitKat). Tablets will be supported in the near future.
Supported Audio Format: .mp3, .aac, .m4a (AAC), .wav, .flac, .ogg
Output: .mp4 (AAC)
Google Play Link - https://play.google.com/store/apps/details?id=com.nexstreaming.app.singplay

Adjust recording quality
How to adjust recording quality.. ? I experience noise in the vocals during recording. I guess the problem is due to the recording quality is set to high. I experience the same when recording via native sound recorder app, for which I adjust the recording quality and then the noise is gone.
Please help

Mods and tweaks for revo v8

Acid Audio Engine​
Code:
Here is a short list of features this Engine:
● Sony Clear Audio Plus system (an amazing technolgy to enhance clarity of Bass and provide several effect like Clearphase, Clearbass, SRS surround,...)
● Beats Audio Engine (we ported latest beats engine from HTC one XL, and modded it a lot to be great handled by Clearaudio, it improve greatly Bass power and overal surround effect)
● Cyanogen DSP features (it helped a lot to handle better in app Equalizer)
● Dolby Digital Plus (overall better audio clarity with way more natural sound and some awesome features like SRS Wow and Dynamic Bass range)
● Sony Xloud (enhance noticably speaker quality in terms of clarity and volume, it help to ensure there is no distorion in sound even in headset, better balanced treeble and crystal voice)
● Eizo Rewire PRO series (an awesome Audio tool wich brings lots of effect and claim to offer a better balanced and natural Sound)
● AC!D Audio Parts (Huge optimisation in overall sound quality due to some optimisation, some tweaks, some audio rendering and resampling and even more... some Huge work have been done already)
Our Goal is to give an Engine able to increase Audio Quality of every Android Based Smartphone in every application you will be able to notice improvement
Download- ACID Audio Engine

More Xperia 4.3+ Themes
MoreThemes​For more themes u can go here and download it will be updated as i get time - http://techandro.com/?page_id=480

Systemui Mods
Black gradient statusbar - uploading
5 button navibar - coming soon
Recent App Mods​Windows
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Download
Codename android -
download
Xperia
Download
Revolution - coming soon

If u getting battery and ram problem than do this
Download This - Universal Init.d
- Click on activate
- than open revo v8.zip fro system/etc/init.d folder extract all
- and copy them to system/etc/init.d with root explorer
- and set this prmissions
- Than reboot

reserved

yash989 said:
- than open revo v8.zip fro system/etc/init.d folder extract all
- and copy them to system/etc/init.d with root explorer
Click to expand...
Click to collapse
I cant see any init.d folder in revo v8.zip! Help please

s0ur0v said:
I cant see any init.d folder in revo v8.zip! Help please
Click to expand...
Click to collapse
m out now will soon upload zip

Hello to take,I have problems with downloading.When clicking on a file opens a text format.Can't download.Why is this happening?
OK,fixed

[MOD][AUDIO][4.0+]CrystalZFX Sound Enhancer Engine [CRYSTAL CLEAR SOUND][UPDATED]

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◢ CrystalZFX Sound Enhancer ◣
★ 11 Stock Presets
★ Preset auto-detection
★ 6 Band-level Equalizer Controller
★ Bass Booster
★ Virtualizer
★ Reverb Presets
★ Integrates with stock Android Music player
★ Works on both wired and Bluetooth A2DP headsets
★ Works with streaming music
★ Power Mode options to enable/disable effects
★ Fully optimized for phones and tablets
★ No root required
◢ Stock Presets ◣
★ Acoustic
★ Bass Booster
★ Bass Reducer
★ Classical
★ Deep
★ Flat
★ R&B
★ Rock
★ Small Speaker
★ Treble Booster
★ Treble Reducer
★ Vocal Booster
★ REDMI 1S (Excl. for redmi 1s)
◢ Screenshots ◣
◢ DOWNLOAD ◣
◢ UPDATE V2.0 ◣
◢ ChangeLog ◣
★ eXtra-Loud
★ Crystal Bass
★ Crystal Clarity
★ Pure Tech +
★ Surround +
★ Convolver
◢ Any Queries? ◣
your feedback's are always welcomed!! if you like my app!! please don't forget to click thanks button :good::good:
◢ ENJOY THE CRYSTAL CLEAR SOUND ◣

First. Going to try this out

Do you think people are fool here? You just did a makeover of VIPER4Android and post with a different name. You don't even have courtesy to give credit to VIPER4Android developers.

Android 5 L is there support?
Tapatalk tan yazdım ya la...

lol this is just a fake, no function
Don't waste your time on this
Sorry for my bad English...
Sent from my HTC Desire 200 using XDA Premium 4 Mobile app

skchattha said:
Do you think people are fool here? You just did a makeover of VIPER4Android and post with a different name. You don't even have courtesy to give credit to VIPER4Android developers.
Click to expand...
Click to collapse
V4A is based on the source code of Cyanogen Mod's DSP Manager which is open source. Anyone has access to the source code including this person here and the creator of Viper4android. This fact seem to have eluded you. What this person did wrong is instead of using that source code to create a different DSP Manager he basically recreated V4A with a few of the original DSP manager features. Now if he had created a different set of features then it would have been no issue.
To the op please create something original out of the source code. Your Pure Tech+ is basically v4a's Cure Tech+. You have the Convolver feature from v4a minus the impulse response function needed to make it work. Your Crystal Bass and Crystal Clarity are renamed versions of v4a features with the same presets. You are better off creating an app based on viper520's XHIFI app since it is no longer being supported if you can't create a app with different features from DSP Manager and V4A.

Doesn't seem to work on Xiaomi MI3

hrishikeshgramani said:
Doesn't seem to work on Xiaomi MI3
Click to expand...
Click to collapse
It doesn't work for me either but its OK as I already have working mods on my phone.

Garage ?

closed for invetigation

[SoundMOD SDK] Integrate Digital Power Station™ (DPS) to Android

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Can someone create a MOD include this great sound booster , I use it with my laptop (windows) and the sound is amazing and much better , I think they can provide the Development Kit (SDK) for anyone asking for it here :
Bongiovi - Digital Power Station™ (DPS)
WHAT IS DPS?
Bongiovi DPS is a patented algorithm that optimizes audio in real time.
DPS Profiles are created and implemented for ultimate audio flexibility in any sound scenario.
At the heart of DPS is our profile system. A DPS profile contains over 120 calibration points that configures the patented DPS algorithm. Each profile is carefully crafted by Bongiovi acoustic engineers. These profiles are used to optimize the audio signal in real-time; for the output device (speakers), environment (high noise), and to emphasize a “sound” or other desired effects .
Below are a few examples of how Bongiovi DPS can work for you:
● Upgrade the performance of headphones and earbuds – Bongiovi Acoustics audio engineers have created custom profiles for many popular headphones and earbuds. These profiles correct for any audio deficiencies and provide an overall improvement in sound quality.
● Improve the sound of small speaker systems – Portable speakers, clock radios, laptops, tablets and mobile phones all sacrifice audio quality for portability. Bongiovi DPS excels at creating an optimized audio signal for small speakers. This means louder overall output, clarity for soft recordings, better bass response and enhanced stereo imaging.
● Maximize the sound of large speaker systems – Home theater, car audio, PA systems and more. Bongiovi DPS will significantly improve the audio quality of these systems.
● Improve the sound of TVs or multimedia displays – Movies can have very loud or very soft passages. Bongiovi DPS can normalize the volume (DRC) of all multimedia content in a way that sounds natural and brings out details normally only heard in a movie theater.
● Automatic sound mixing/mastering – Some applications, like Karaoke, require blending several sounds together in real time. Even a professional sound engineer can experience less than desirable results mixing audio on an app. Bongiovi DPS Technology can automatically help blend music, voice and other sounds with the press of a single button.
● Recondition the sound of internet audio streams – Real time internet audio can have inconsistent volume, content quality and frequency response issues. The active components of Bongiovi DPS Technology can easily provide a consistent, quality listening experience for any audio stream.
● Increase clarity in high noise environments – If your audio needs to be heard in a crowded or noisy environment, then DPS is your solution. DPS Technology was originally invented to provide high quality audio in the noisy environment of small private airplanes.
● DPS will vastly improve any audio application you can think of.
source : http://bongioviacoustics.com/dps/

Awesooomeee
awesome Great REVOLUTION after viper:angel:
currently using in WINDOWS OS on MY HOME THEATRE SPEAKER,it was like DPS give OXYGEN to my SPEAKERS:laugh::laugh:
100% bass terreble quality clarity stereo sound surround ENHANCED:good:
thanks for the share,i couldnt have founded it if you have not shared it
it will be awesome if its on android:fingers-crossed:

The app jetaudio has this inbuilt.

just testing! sounds better yet :good: