Skip to main content

Free open source multitrack recording on an android phone

I've been recording rehearsals for a while using my android phone. This gives quite acceptable sound quality and some of it is even on soundcloud. It naturally led to me wondering if more than one track was somehow possible, and I've tried a few combinations of apps to see if they could work together, before getting to this method:

This process has only been tested on a G1 so far so I can't say for sure if this can be done on other phones.  It's a bit tiresome but it proves that 2 track recording can be done. With a few changes to the apps that allow it, it could get a lot easier too.

1) Start by downloading Rehearsal Assistant and Ringdroid. Both these applications are open source, and both are listed on the android market.

2) Make a recording using rehearsal assistant first - it's easy - just push the big red button, but you may want to go into it's settings and set it to record directly as .wav files by selecting "Record Uncompressed Audio" under Recording Quality.

3) Once you have your recording you can play it back and if you long press it, lots of options will appear,  including the option to open the recording in Ringdroid. Do this, and Ringdroid will start up.

4) Now you have to select what you want to save. The problem with Ringdroid is that it's mostly for making ringtones so it will by default only select a small part of your recording - I first zoom out as much as possible by clicking on the magnifying glass, and then try and select all the bits of the recording I want to have as a background track. Try and leave a few seconds of space at the beginning. You can edit it off later. Now save it as "music".

5) Open it again (how laborious!) by selecting from the various recordings available in ringdroid's list. Press the play button.

6) While the recording plays in ringdroid, hold down the home button so as to show up other recently used apps. Select rehearsal assistant again...

7) Now you can hear the first recording you did, and can also hit record again to record your second track.

For some reason if you do it this way, the background recording plays through completely and a second track doesn't sound too bad over it - I've tried to do this in other ways and it always cuts out when in the background for a few seconds.

Again, this is still for putting musical parts down together and seeing what two tracks might sound like superimposed, not for quality professional recordings. It reminds me of the 2 track recording that was possible using cassette players years ago.

Comments

Unknown said…
nifty idea , layering could be useful.

another option might be to try using mulitple bluetooth inputs provided by
something like a motorolla dc 800 or
similar bluetooth audio interface.

My experiences with dj apps on my g2 suggests that its going to struggle with more than 2 streams at once given that recording is more processor intensive than
playback . Maybe something with a 1ghz processor might be better .

Popular posts from this blog

Poem for peace, from a pirate recording in a Cairo Museum.

My love With peace I have placed loving flowers at your feet With peace With peace I stopped the seas of blood for you Forget anger Forget pain Forget your weapons Forget your weapons and come Come and live with me my love Under a blanket of peace I want you to sing, beloved light of my eyes And your song will be for peace let the world hear, my beloved and say: Forget anger Forget pain Forget your weapons Forget your weapons and come And live in peace These I believe are the words of a widow at the tomb of her beloved. I got the words from this italian website . It was used in a seminal Italian anti-war song " Luglio Agosto Settembre Nero " by the band Area (although I guess they weren't called anti-war songs then) - whose vocalist Demetrio Stratos indirectly gives the name to this blog, and whose music is the inspiration for a lot of my mine. It's adapted in turn from a greek folk song, but no-one knows who wrote the original words, except that Stratos was probably...

My Interpretation so far of the Sutra of Innumerable Meanings

This Sutra, handed down by Ananda, the Buddha's companion, then found and translated to Chinese by Kumarijiva, is part 1 of a trilogy consisting of the Lotus Sutra, The Innumerable Meanings Sutra and the Meditation Sutra. It is studied and known among others, by Nichiren Schools of Buddhism, and it's his interpretation that I probably share most with: http://nichiren.info/OngiKuden/text/Muryogi.htm First of all, it is meant to be read by Bodhisattvas. Boddhisatvas are people who use what they learn to teach others about how to be Buddhas. When I think of Boddhisatvas, I think of people like Gandhi or Martin Luther King etc, people who fought beyond their own lives for the greater good or peace, perhaps even without knowing what the right way or right practice is. The Innumerable Meanings Sutra says these people will attain the supreme enlightenment that the Buddha attained, eventually, although the short term effect will be that everyone is a lot better off. Laws, people and so...

Big Cafe on Transport Sustainability

About a month ago, I went to the "Big Cafe for Transport" event that was happening just around the corner from my house at the brilliant new "Co-Exist" sustainability business centre . Coexist run as a CIC and are just about to launch with a plan to open up green community and event spaces, funded in turn by work and business spaces. I really hope that means a market in stokes croft! After I attended, I'd promised everyone I'd write up about it, and promptly left it as a nagging thing in the background as life took over. But now the official write up of the event has been published so I thought I should finish the abortive blog post I made that same night. A disclaimer : I'm allowed to make mistakes here, so if I've written anything wrong or stupid, please correct me! A big cafe costs 20 pounds to attend. It started really early on a Saturday morning (thus excluding the entire population of Stokes Croft), but it included a lunch (from Kukuva Cafe ac...