Linuxkommando.com::linux,ubuntu,software,news,reviews,articles » sound http://linuxkommando.com Tue, 07 May 2013 07:25:23 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 New since LV2 http://linuxkommando.com/2012/10/new-since-lv2.html http://linuxkommando.com/2012/10/new-since-lv2.html#comments Mon, 29 Oct 2012 13:24:24 +0000 admin http://linuxkommando.com/?p=5077 Recently witnessed several significant developments relating LV2 – modular open API to create audio and MIDI-plugin.

After several years of development, released a new version of a set of plug-ins called Calf . The new version includes about 20 new effects and plug-ins for mastering. The interface has been significantly upgraded, written documentation prepared by the new site.

Updated to version 1.2.0 specification itself LV2 (1.0 release took place earlier this year.) It has several new extensions: options, buf-size, morph. The latter is interesting because it allows you to dynamically change the port type.

New extensions of 1.2.0 are used in several projects. The first is FOMP - port plug MCP, VCO, FIL and WAH at LV2. The original version, written for LADSPA, intended for use in modular synthesizers, and more.

The second is a new module convoLV2 , applying convolution to the audio signal. The project is in some ways repeats the already existing and well-established IR.LV2 , but designed for wider application and while that is more a demonstration of the technology.

Finally, Rui Nuno Capela (by MIDI-sequencer Qtractor), previously castigated LV2, wrote for three of its own plug-in to this API, and the progress is clearly not going to stop:

]]> http://linuxkommando.com/2012/10/new-since-lv2.html/feed 0 Issue universal media transcoder Hrizopea http://linuxkommando.com/2012/10/issue-universal-media-transcoder-hrizopea.html http://linuxkommando.com/2012/10/issue-universal-media-transcoder-hrizopea.html#comments Thu, 25 Oct 2012 04:44:50 +0000 admin http://linuxkommando.com/?p=5063 The new version of the universal media transcoder Hrizopea. In fact it is the “engine” to which a module adds support for command line programs – coders. Is not difficult to guess, it’s all written in PyQt. Project code is distributed under license LGPL.

Now support for the following encoders:

  • Recoding sound: Aften, Flac, Flake, Lame, MAC, Musepack, ogg, Wavpack.
  • Videos: ffmpeg2theora, several modules implement about 75% (!) MEncoder-functional as well.
  • Graphics and documents: Convert, uniconvertor, PDFutilites.

Almost every module can be run in a file, batch, and now in recursive mode.

Major changes in Hrizopea:

  • Completely rewritten subsystem startup modules. Now, one module can run several series encoders.
  • Added filter “all.” If it is, then the input module receives all the files in supported formats.
  • Encoders can now be supplied with the modules.
  • Improved system for translation into other languages and help.
  • The module adds support for recursive mode (batch mode + subdirectories).
  • Reworked the main interface and the configuration dialog.
  • Fixed many bugs and shortcomings.

Changing the modules:

  • The module MEncoder_Xvid, MEncoder_lavc MEncoder_x264 and adds support zones.
  • Reworked module MEncoder_x264.
  • In the video source mode appeared to create slideshows and rewritten subsystem EDL files.
  • MSU improved.
  • The package added modules AC3 and Musepack.
  • The module adds support Flac encoder Flake.

PS The program only works on Linux.

]]> http://linuxkommando.com/2012/10/issue-universal-media-transcoder-hrizopea.html/feed 0 The first stable release of the multimedia framework GStreamer 1.0 http://linuxkommando.com/2012/09/the-first-stable-release-of-the-multimedia-framework-gstreamer-1-0.html http://linuxkommando.com/2012/09/the-first-stable-release-of-the-multimedia-framework-gstreamer-1-0.html#comments Tue, 25 Sep 2012 17:29:51 +0000 admin http://linuxkommando.com/?p=4952 GStreamer project represents the first stable release of the GStreamer multimedia framework with a stable API and ABI.

1.x branch – a stable branch, aimed at the end user. Its API and ABI compatible with those of the branches 0.10.h, but, if necessary, the two branches can be installed and used in parallel.

Major news and improvements:

  • More flexible use of memory.
  • Extensible and consistent binding system metadata to buffers.
  • Increased efficiency of buffering small objects.
  • Automatic dispatch in state of dynamic flux.

  • Improved systems to capture video and audio.
  • Improved handling of timestamps.
  • Added support for language bindings based on GObject-Introspection.
  • Many improvements in terms of performance and load on hardware resources.
  • Components added interaction with the hardware-accelerated video encoding and decoding, while only at the primary level.
  • Other minor improvements and optimization.

Most of the improvements are aimed at API plugin GStreamer. API application has not changed, so do not be difficult to port applications to new branch GStreamer. Available for developers guide to port.

]]> http://linuxkommando.com/2012/09/the-first-stable-release-of-the-multimedia-framework-gstreamer-1-0.html/feed 0 Din 4.0 http://linuxkommando.com/2012/09/din-4-0.html http://linuxkommando.com/2012/09/din-4-0.html#comments Tue, 04 Sep 2012 17:30:04 +0000 admin http://linuxkommando.com/?p=4858 Din (recursive acronym Din is noise) – a tool for creating musical improvisations.
The program uses Bezier curves to create and adjust the form of sound waves, resulting in a changed voice output audio. Each sequence derived sounds can be grouped and simultaneously play and change the sound in real time.
Used for output sound server JACK.

Capabilities can be expanded with a Tcl-scripts.

Download

]]> http://linuxkommando.com/2012/09/din-4-0.html/feed 0 SOUND plans to move more audio functions in the kernel http://linuxkommando.com/2012/08/sound-plans-to-move-more-audio-functions-in-the-kernel.html http://linuxkommando.com/2012/08/sound-plans-to-move-more-audio-functions-in-the-kernel.html#comments Wed, 01 Aug 2012 09:20:51 +0000 admin http://linuxkommando.com/?p=4710 A previously unknown author has announced a new audio system that supports all major audio functions in the Linux and FreeBSD kernels and a simple shift, wants to offer OSS-oriented interface for applications.

SOUND – kernel level audio Next Generation says on a website that has published an unknown author. The author is dissatisfied with the separation between kernel drivers (ALSA or OSS4) and audio routers like PulseAudio or JACK. He contrasts the new audio system, low latency, full latency compensation and provides the routing of audio streams between endpoints, and there are at the end points of view of applications do not distinguish between hardware and processes.

The reason for the design of a new audio system for the author that the existing systems have problems with the latency and the synchronization of audio and video. The audio processing belong to the kernel, because even latency of 4 ms, the sound effects heard. After all, he admits that the current separation between kernel and user processes in spite of the necessary context switching works quite well, at least as long as only a few processes involved. For professional applications, however, he sees the limits are reached.

SOUND will also increase the level of abstraction for applications. The author believes that the existing systems such provide only the ALSA hardware interface for the applications. This is comparable to that network would have to construct applications, the TCP packets themselves, to be sent over the network.

The author sees the audio mainly as a routing problem where the sources and sinks must be connected. Audio applications will work with audio, simply by opening a file descriptor, this with ioctl configure and read and write to make inputs and outputs. This is essentially the API OSS4 (now the free Open Sound System). But according to the author OSS4 provides no power management, making it unusable for mobile devices, and no MIDI. SOUND is to contain it all.

SOUND is according to the author in development, but it is still too unstable and experimentally for the first publication. The publication is intended as a free software once it is stable in the broad and a native driver for HD audio chips from Intel is ready. The author would like to introduce the system later in the kernel, but would need new drivers for all audio chips can be written. Perhaps it would not even have much work to deduce this from the existing driver for ALSA or OSS, but for predictions, it is too early.

]]> http://linuxkommando.com/2012/08/sound-plans-to-move-more-audio-functions-in-the-kernel.html/feed 0 Wine 1.4 Released http://linuxkommando.com/2012/03/wine-1-4-released.html http://linuxkommando.com/2012/03/wine-1-4-released.html#comments Thu, 08 Mar 2012 04:56:03 +0000 admin http://linuxkommando.com/?p=4148 Wine development team is pleased to announce a new stable version of Wine 1.4.

This version was prepared 20 months and includes more than 16,000 changes.

The main changes are:

  • The new engine DIB (Device Independent Bitmaps), whereby a much improved performance of applications that make heavy use of DIB. It can also be used to implement some of the graphics primitives that are not supported by your video driver, such as transparency.

  • Processed audio subsystem (now it is based on the model of Windows VIsta). To work with the new implementation rewritten drivers Alsa, OSS and CoreAudio. Sound subsystem Jack, NAS, AudioIO, ESD, and OSS3 no longer supported.
  • Wine can now use GStreamer for playing audio and video. Thus, it supports all formats, for which there is a GStreamer codec.
  • Full language support for right to left. Languages ​​with vertical writing (eg, Japanese) are now also supported.
  • Wine is now available for ARM-platform

This release also brings a lot of general improvements, such as support for new applications, for example, Microsoft Office 2010.

Known issues:

  • Improved support for PulseAudio, but good results require a new version of PulseAudio (> = 1.0) and alsa-plugins (> = 1.0.25) (see http://wiki.winehq.org/Sound )

This release is dedicated to the memory Gé (Greg) van Geldorp, who passed away in May 2011 Greg personally engaged in the design and product development Wine Testbot, which became the key to the process of developing Wine. The high quality of this release is largely due to his work.

]]> http://linuxkommando.com/2012/03/wine-1-4-released.html/feed 0 Rhythmbox 2.95 http://linuxkommando.com/2012/01/rhythmbox-2-95.html http://linuxkommando.com/2012/01/rhythmbox-2-95.html#comments Wed, 18 Jan 2012 09:53:34 +0000 admin http://linuxkommando.com/?p=3819 Once quietly updated January 15 great music player.

Innovation:

  • GTK + 3, compatibility with GNOME 3.
  • A new database for album art.
  • Grilo plugin for UPNP and Jamendo.
  • Rewrote plugin visualization (now using clutter).
  • Reworked some of the interface.
  • The new system of coding profiles.
  • Plugins are now based on libpeas.
  • Much improved plugin dbus media server.


Also fixed many bugs.

]]> http://linuxkommando.com/2012/01/rhythmbox-2-95.html/feed 0 Issue library xine 1.2.0 http://linuxkommando.com/2012/01/issue-library-xine-1-2-0.html http://linuxkommando.com/2012/01/issue-library-xine-1-2-0.html#comments Mon, 02 Jan 2012 11:21:40 +0000 admin http://linuxkommando.com/?p=3744 A new version of the library to play audio and video xine. List of some new features library:

  • Support VDPAU - API for working with graphics cards Nvidia GeForce 8 Series and later. The library and the API allows GPU programs, working with video.
  • Introduced support for the format VDR .
  • Optimization of code to reduce memory consumption. For example, the optimization of graphical user interface, reduced memory consumption by 10 Mb.Takzhe, for example, reduced memory consumption by one third when playing mp3

  • Removed plugin SyncFB. Instead it is proposed to use DirectFB or VIDIX
  • FFmpeg is now an external dependency when installing
  • Libraries libmpcdec, libdca separated from the main source xine library
  • Held standardization paths used by the library with the requirements of the standard XDG
]]> http://linuxkommando.com/2012/01/issue-library-xine-1-2-0.html/feed 0 FFmpeg 0.9 http://linuxkommando.com/2011/12/ffmpeg-0-9.html http://linuxkommando.com/2011/12/ffmpeg-0-9.html#comments Tue, 13 Dec 2011 09:53:15 +0000 admin http://linuxkommando.com/?p=3611 FFmpeg – a set of free libraries, open source, which allow you to record, convert and transmit digital audio and video recordings in various formats. It includes libavcodec – the library of encoding and decoding audio and video and libavformat – Library multiplexing and demultiplexing in mediakonteyner.

Changes:

  • native decoder dirac
  • support for reading files within MPO
  • video-source “Mandelbrot fractal”
  • Forward to mmsh

  • filter libass
  • decoder VBLE
  • encoder libopenjpeg
  • correct alpha opacity in many codecs
  • correct 8-bit palette in various codecs
  • support for RGBA TIFF
  • added a lot of optimizations for ARM
  • correction x264rgb
  • support for the container and the encoder g723.1
  • Support input pulseaudio
  • experimental encoder jpeg2000
  • H.264 hardware decoding on Android
  • native decoder utvideo and support libutvideo
  • Encoder support libspeex
  • Support libaacplus
]]> http://linuxkommando.com/2011/12/ffmpeg-0-9.html/feed 0 Release music player Audacious 3.1 http://linuxkommando.com/2011/11/release-music-player-audacious-3-1.html http://linuxkommando.com/2011/11/release-music-player-audacious-3-1.html#comments Thu, 17 Nov 2011 11:55:41 +0000 admin http://linuxkommando.com/?p=3271 Audacious – free audio player with GTK + support winamp-like interface. Audacious 3.0 release was marked by the transition to GTK +3.0. This release ported to GTK +3.0 continue.

Changes:

  • new plug-in host LADSPA;
  • plug-in alarm clock has been ported to GTK +3.0, and has been restored;
  • A new window of the queue manager that shows all the songs to current playlist;
  • new plug-in conversion from mono to stereo and vice versa;
  • Audacious can now run in a mode without an interface and controlled via DBus, for example, using audtool;

  • audtool can now set the option “Stop after current song”;
  • New option “Do not load metadata during playback” to reduce the I / O;
  • plug-in support for audio CDs is now correctly reads disks with mixed data;
  • clip-box plug-ins such as LyricWiki, now have a standard size window;
  • new system configuration with a reduced number of disk accesses and improved API;
  • Audacious build on Windows now automatically adds an icon in the executable file;
  • when running under Windows Audacious no longer creates a directory «audacious» directory “My Documents”;
  • constant PATH_MAX is no longer used for compatibility with the GNU Hurd;
  • visualization subsystem has been redesigned for better performance and better display;
  • added support for M3U playlists with the extension. m3u8;
  • Remove the unsupported plugins and moodbar rocklight;
  • Module 4 provides an OSS implementation of OSS in FreeBSD;
  • OSS module 3 was deprecated and is no longer going by default;
  • BS2B plugin now has several options to customize the user;
  • channel mixer plugin now supports the mixing of certain surround formats to stereo.

Source code:

]]> http://linuxkommando.com/2011/11/release-music-player-audacious-3-1.html/feed 0