Portable Hard Disk Recorder How-To
Three years ago, this project would have been a royal pain in the hind end. Although the Multiface has always been Linux-compatible, once upon a time, doing real-time audio on any hardware required a lot of fancy command-line tricks and kernel recompilation. The plethora of studio distributions in the last couple years has radically changed the process and has brought the most powerful parts of the Linux multimedia subsystem into the reach of people who are power users and hobbyists, rather than remaining in the domain of kernel hackers. Thanks to the power of Linux and open-source software, for the cost of an old laptop and a new audio interface, you own a proper, full-featured, multitrack digital audio field recorder. Go forth, record, edit, create and compress!
Some Problems with Digital Audio
As you go about your recording, you're going to discover some of the limits of digital recording, such as the fact that current technology doesn't allow for sample rates high enough to reproduce cymbals and other sounds with high, clear treble accurately—sounds you won't run into when recording voices, but you will encounter in music and sound effects. To better understand how digital sampling works, and how you can use sound reinforcement and acoustic techniques to overcome some of those limitations, pick up the Yamaha Sound Reinforcement Handbook. It will help you understand how audio reinforcement works and how to compensate for such problems.
Laptop-compatible Pro Audio interface support is spotty and hard to find accurate information on, but an excellent place to start is the FFADO Project at www.ffado.org.
The other place for good information is the ALSA Project hardware database at www.alsa-project.org.
For more information about tweaking the RME Multiface 2, see the HDSP How-To at pd.klingt.org/files/hdsp-howto.html.
Dan Sawyer is the founder of ArtisticWhispers Productions (www.artisticwhispers.com), a small audio/video studio in the San Francisco Bay Area. He has been an enthusiastic advocate for free and open-source software since the late 1990s, when he founded the Blenderwars filmmaking community (www.blenderwars.com). Current projects include the independent SF feature Hunting Kestral and The Sophia Project, a fine-art photography book centering on strong women in myth.
Fast/Flexible Linux OS Recovery
On Demand Now
In this live one-hour webinar, learn how to enhance your existing backup strategies for complete disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible full-system recovery solution for UNIX and Linux systems.
Join Linux Journal's Shawn Powers and David Huffman, President/CEO, Storix, Inc.
Free to Linux Journal readers.Register Now!
|CentOS 6.8 Released||May 27, 2016|
|Secure Desktops with Qubes: Introduction||May 27, 2016|
|Chris Birchall's Re-Engineering Legacy Software (Manning Publications)||May 26, 2016|
|ServersCheck's Thermal Imaging Camera Sensor||May 25, 2016|
|Petros Koutoupis' RapidDisk||May 24, 2016|
|The Italian Army Switches to LibreOffice||May 23, 2016|
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- Secure Desktops with Qubes: Introduction
- Chris Birchall's Re-Engineering Legacy Software (Manning Publications)
- The Italian Army Switches to LibreOffice
- Linux Mint 18
- Petros Koutoupis' RapidDisk
- ServersCheck's Thermal Imaging Camera Sensor
- Oracle vs. Google: Round 2
- The FBI and the Mozilla Foundation Lock Horns over Known Security Hole
Until recently, IBM’s Power Platform was looked upon as being the system that hosted IBM’s flavor of UNIX and proprietary operating system called IBM i. These servers often are found in medium-size businesses running ERP, CRM and financials for on-premise customers. By enabling the Power platform to run the Linux OS, IBM now has positioned Power to be the platform of choice for those already running Linux that are facing scalability issues, especially customers looking at analytics, big data or cloud computing.
￼Running Linux on IBM’s Power hardware offers some obvious benefits, including improved processing speed and memory bandwidth, inherent security, and simpler deployment and management. But if you look beyond the impressive architecture, you’ll also find an open ecosystem that has given rise to a strong, innovative community, as well as an inventory of system and network management applications that really help leverage the benefits offered by running Linux on Power.Get the Guide