MicDroid, a Pitch-Correction App

intervigil · Jul 9, 2010

I wrote a small app that basically produces the autotune effect. It's based on the AutoTalent LADSPA plugin, by Tom Baran, available here: http://web.mit.edu/tbaran/www/autotalent.html
The app is available under the name 'MicDroid' in the market, and the source is available at my github, http://github.com/intervigilium/MicDroid
There's still a lot of work to be done, including pretty much the entire GUI.
Currently my priorities are like the following:
1. device compatibility, I have reports of failure on G1, MyTouch3G, Galaxy S
2. graphics (being worked on)

The reason I'm posting here is because I don't have most devices (anymore), and would like some testers with different phones to get me some logs. Testers and feedback would be greatly appreciated!

If you run into force-close, or general app failure, grab LogCollector from the market, run it after my app fails, and send me the log!

Changelog available here: http://intervigil.posterous.com/pages/micdroid

davebu · Jul 9, 2010

downloading now, have an EVO and if you want me to test on my Hero I can do that too. I'm looking forward to the ability to use this while making an outgoing call, as that was the coolest part of the T-Pain app to me. Not really sure how it would be best to do that though, put a dialer into the app?

*EDIT*
Just tested it, works great so far, I actually would prefer the app to not have auto-rotation as it told me was in the last update.

You think you could have the library and the recording button on the same screen? Just put the button at the top and the library under it or something. I'm really excited for the development of this app, do you have someone working on the UI/icon yet?

gr00vy0ne · Jul 9, 2010

So far this works on the Xperia X10i running Android 1.6 (FW R2BA023)...i'll test more tomorrow and have some colleagues test it as well. They all have various different devices so I'll get extra device feedback.

pwndrone · Jul 9, 2010

Force closes on Nexus One 2.2 Froyo CM6.

slow4g63 · Jul 9, 2010

works really well! I have the sprint htc evo 4g
I just recorded a call when calling my fiance and her voicemail picked up.
this is hilarious!

nice job on having it record to .wav too! I'm glad it's not a "funky" format!

keep up the good work

intervigil · Jul 9, 2010

pwndrone said:
Force closes on Nexus One 2.2 Froyo CM6.

My test device is a Nexus One running CM6-alpha2, what kind of force close did you get?

slow4g63 · Jul 9, 2010

here's an example I made...

BTW lover · Jul 9, 2010

Works well on my Magic 32b running cm5.0.8. Keep up the good work, love ur app!

pwndrone · Jul 9, 2010

Its actually working fine now. I had to reboot but the app is great, albeit lacking in the ui department.

tErbo b00st · Jul 9, 2010

force close on Hero running Darchstar 2.1 rom

Is there not a way to do a real time voice changer, as opposed to record, change, and play?

intervigil · Jul 10, 2010

tErbo b00st said:
force close on Hero running Darchstar 2.1 rom

Is there not a way to do a real time voice changer, as opposed to record, change, and play?

Firstly, where does it force close?

And secondly, I've got a lot of requests for this, but as of current Android 2.2, I don't think it can be done. That was what I tried and failed at earlier, but currently I just don't think the Android audio API is quite mature enough to allow it. You can check the following links for more information.

http://code.google.com/p/android/issues/detail?id=3434
http://stackoverflow.com/questions/1448630/low-latency-audio-api-for-android

Mach3te · Jul 10, 2010

Force Close when I hit the record button on my HTC Incredible

drmbdrummer · Jul 10, 2010

Bravo for starting this project, this looks like it has a lot of promise.

I have it working on my Incredible running the YASR 1.1 rom.

Thanks so much and can't wait to keep testing this app out.

intervigil · Jul 10, 2010

Mach3te said:
Force Close when I hit the record button on my HTC Incredible

More details please, you're the first person to report a problem on the Droid Incredible.

gr00vy0ne · Jul 10, 2010

is there any chance of adding the ability to choose a "save to" format? my colleagues and i were playing with it on our various devices and wanted to send them to each other via MMS.

the only problem was the WAV file sizes ended up being too large (for anything over 8 seconds).

perhaps AMR or some other standard compressed format usable in MMS messages?

i did find some workarounds to get the wav files attached and working but it required 3 different apps.

thanks and love the work you have started on this.

intervigil · Jul 10, 2010

Warning: rant about Android APIs
I actually chose wave format because it's pretty much just writing raw short data, which makes it easy on the device CPU. The problem with Android right now is that I haven't seen any sort of encoder API, which is lousy because there is hardware support for AMR compression. (for voice, and also if you use MediaRecord API)
If I were to integrate a "save as format" feature right now, I'd have to implement my own encoder, whether it be for MP3, AMR, etc, which is again, slow, and kind of a pain.
The one saving grace of this is that if I was to implement a "save as format" feature right now, it would only need to encode when you select "send to", which means I'm not going to dismiss it until I can prove it won't suck too badly.

/rant

Also, current status update:
I'm working on some device compatibility issues right now, I'm hoping to push out some updates in the next day or so which will hopefully address some force-close issues when recording.
Graphics are being worked on, it's something I'm aiming for in the near future, so stay tuned!

hpe · Jul 10, 2010

FC on N1 running Froyo.

Logcat:

07-10 15:48:38.769: ERROR/AndroidRuntime(1466): FATAL EXCEPTION: Mic Writer Thread
07-10 15:48:38.769: ERROR/AndroidRuntime(1466): java.lang.NullPointerException
07-10 15:48:38.769: ERROR/AndroidRuntime(1466): at com.intervigil.micdroid.WaveWriter.write16BitsLowHigh(WaveWriter.java:113)
07-10 15:48:38.769: ERROR/AndroidRuntime(1466): at com.intervigil.micdroid.WaveWriter.write(WaveWriter.java:76)
07-10 15:48:38.769: ERROR/AndroidRuntime(1466): at com.intervigil.micdroid.Mic$MicWriter.run(Mic.java:385)
07-10 15:48:38.769: ERROR/AndroidRuntime(1466): at java.lang.Thread.run(Thread.java:1096)

intervigil · Jul 10, 2010

thanks, haven't seen this one before, will look at it.

Also, I'm still getting plenty of reports of problems on the Droid Incredible, and could really use a tester.

legion21 · Jul 11, 2010

davebu said:
I'm looking forward to the ability to use this while making an outgoing call, as that was the coolest part of the T-Pain app to me. Not really sure how it would be best to do that though, put a dialer into the app?

How did you do this with the T-pain app?

drtretj · Jul 11, 2010

Mach3te said:
Force Close when I hit the record button on my HTC Incredible

No force closes at all on my HTC Incredible.

MicDroid, a Pitch-Correction App

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