I have few doubts regarding Data Access types, which controls the way that
the program will deliver/receive data from the interface in Alsa:
1. What are the advantages/disadvantages of interleaved over non
interleaved or vice versa
2. What are the advantages/disadvantages of MMAP interleaved over RW
interleaved or vice versa
3. Which access type is most appropriate for, camera recording
Regards
Harman kalra
I am a newbie to Linux Sound Programming, so few of my queries may sound
foolish, but kindly address them.
*I want to capture a video on my beagle board Xm rev C (TI DM3730). *So as
per as the audio capturing is concerned, I am very much confused about the
audio formats, like which format should I choose to get a better sound
quality in the least possible memory requirement.
Since so many PCM formats such as S8, U8, S16_LE, U16_LE, A-law, u-law-,
IMA_ADPCM, MPEG, GSM, etc are there so which format should I opt for.
Also
1. What is difference between signed and unsigned PCM format, how does
it can affect the sound quality.
2. If I go for MPEG format, does it mean that audio compression would
handled at my audio port level and my DSP processor would not come into
picture.
3. In reference to my above query i.e. 2, if audio compression is
handled at audio port level, so at the time of audio/video sync up, how
would be my processor be able to time sync both audio and video, since
audio is not being compressed by the DSP.
4. If I opt for A-law or u-law, what could be benefits/disadvantages of
using these formats. Would the audio sample be in compressed form in this
case, if yes, how would audio/video sync up will happen in this case.
If possible kindly provide me a link where I can find differences between
these various formats, pros and cons of each of them.
Thanks & Regards
Harman Kalra
Hello everyone!
OK, I just found this in the archives. Since I haven't done anything with it
in four years - namely since I recorded it - I thought I might just upload it,
the way it is. Just piano.
http://juliencoder.de/nama/tl.ogghttp://juliencoder.de/nama/tl.mp3
It was supposed to be a hypothetical soundtrack. It contains four motives.
On two I expanded for a while. I hope you like it anyway and just imagine the
full orchestra. :-)
Feedback is welcome, I hope this time, I will survive... :-)
Warmly yours
Julien
=-=-=-=-=-=-=-=-=-=-=-=-
Such Is Life: Very Intensely Adorable;
Free And Jubilating Amazement Revels, Dancing On - FLOWERS!
====== Find my music at ======
http://juliencoder.de/nama/music.html
.....................................
"If you live to be 100, I hope I live to be 100 minus 1 day,
so I never have to live without you." (Winnie the Pooh)
Just realised my reply didn't go to the list. mn0 kind of covered it too
though.
Neil
--
Neil C Smith
Artist : Technologist : Adviser
http://neilcsmith.net
On Jul 18, 2012 10:11 PM, "Folderol" <folderol(a)ukfsn.org> wrote:
>
> On Wed, 18 Jul 2012 21:45:13 +0100
> Neil C Smith <neilcsmith.net(a)googlemail.com> wrote:
>
> > AFAIK, the share-alike refers to the permissions, not the distribution
> > method. Just like with GPL software, there's nothing stopping someone
> > sharing it for a price. You could put the non-commercial clause in,
> > although personally I don't like that because it's not well defined.
> >
> > Neil
>
> Ah!
> Thanks, just checked the CC site and you're dead right :(
>
> --
> Will J Godfrey
> http://www.musically.me.uk
> Say you have a poem and I have a tune.
> Exchange them and we can both have a poem, a tune, and a song.
Hello everyone!
I'm again firing up the MIDI setup. The following is in place:
ALSA->JACK->ALSA MIDI connections. They transmit at least from JACK-client to
ALSA sequencer system, which is all I ask. Then jack_midi_clock and klick (to
actually give it a time signature to work with. Now asequdump shows start,
stop and continue. I seem to remember, that it also used to show clock, while
it was running. True?
Testing with jack_midi_dump I get fa, fc and fb from jack_midi_clock.
The problem being: My midi_sequencer just sits there. Sometimes it does
something, which results in a lot of notes on the first beat. Any suggestions?
Warmly yours
Julien
=-=-=-=-=-=-=-=-=-=-=-=-
Such Is Life: Very Intensely Adorable;
Free And Jubilating Amazement Revels, Dancing On - FLOWERS!
====== Find my music at ======
http://juliencoder.de/nama/music.html
.....................................
"If you live to be 100, I hope I live to be 100 minus 1 day,
so I never have to live without you." (Winnie the Pooh)
I found a used Asus Xonar D2/PM on sale. Does anyone have any experience
with cards like these on linux? I have tried to use a creative
soundblaster card in the past, and found it to be sub-par, so i don't
want to buy it if only half of the inputs work etc.
--
Jørn Lomax
GSoC atudent, Fedora audio Spin
CS Student University of Tromsø
Hi!
Since others already covered the gentle production approach and even the
tasteful addition of drums, I had to do something else! ;)
http://archive.org/download/GetOnBoardTheBluesGuicussionMix/get_on_board_th…
Online player, choice of download formats, entire Ardour session and
single tracks ("stem" export):
http://archive.org/details/GetOnBoardTheBluesGuicussionMix
Creative Commons Attribution 3.0 Unported license, as specified by Dave
before.
No samples added, all new sounds achieved by maltreating the existing
material.
The session just needs to be unpacked, but likely requires an Ardour 3
build. The single track exports are wavpacked (http://www.wavpack.com/),
which turned 592.3 MB into 242.9 MB (237.5 MB as .tar.bz2.).
Thank you Dave, for sharing such great material!
--
Thorsten Wilms
thorwil's design for free software:
http://thorwil.wordpress.com/
On 16 July 2012 17:38, Len Ovens <len(a)ovenwerks.net> wrote:
> Even with Jackd running and pulse removed you still need an alsa mixer.
> envy24control is the one you should use with the M Audio Audiophile 24.96
> which has the ice1712 chip set. Go to the analog volume tab and turn up
> DAC1 and 2. Set the patch bay H/W 1 and 2 to PCM out.
my mistake, i should have researched better
apologies for the confusion to the original poster
--
robin
http://fu.ac.nz - Auckland's Free University
Hi
I'm in the process of reworking my live setup. Is basically written in
chuck, controlled by a launchpad and a bcr2000, sound is coming from
renoise triggered over OSC. It's written for me, since I couldn't find
anything that I liked, but it's fairly modular and very stable, so
others might have interest in looking at or using parts of it. I have
absolutely no problem (quite the contrary) in sharing the whole thing
(GPL), but I'm not trying to develop for others, so I don't really see
it as a new project in the linux audio world.
I use git locally to handle the code, but would like to put it somewhere
as a backup for me and for easier sharing with brave souls. My own songs
are in there too, although not the renoise files. So although people
can't really "steal" my entire show, there are some personal stuff in there.
Does anyone have a suggestion for a git repo that could fit my needs?
Anyone but stuff up somewhere that has a similar "profile"; private code
that you don't mind people looking at?
--
Atte
http://atte.dkhttp://modlys.dk
Hi all,
http://wiki.linuxaudio.org is seeing an increasing amount of SPAM.
For a while it has been sufficient to [fail2]ban IP addresses that
incorrectly guess CAPTCHA - ie. prevent brute-force attacks and manually
revert the remaining pollution. -- Yet in the last months either CAPTCHA
breaking has improved or there are real persons doing the spamming.
I did not do statistics, but from watching the changelog I gather that
the vast majority of contributions to the wiki comes from registered
users. So the idea is to lock the wiki down and only allow registered
users (registration requires an email address) to edit it.
Thoughts? Objections?
robin
