Running a Net Radio Station With Open-Source Software
To start Liveice, go into the /usr/local/liveice/bin and run liveice. You must be able to connect to the broadcast server for Liveice to start correctly. Figure 3 is a screen shot of what Liveice looks like when started.
We did not encounter any problems with either the LAME or Liveice setup and configuration. They conform to the open-source standard and are very simple to set up.
We purchased an audio mixer that allows multiple microphones to send audio into the line-in port on the sound card. xqmixer recognizes the sound card as audio in to send the stream through LAME to be encoded and send output through the Liveice client. After the Liveice client receives the input, the client streams the output over the Internet to our Icecast server. Icecast receives the stream from Liveice and relays it back to the Internet in an MP3 format to be interpreted by any MP3 decoder client that our listeners choose to use. Xmms and Winamp seem to be the most popular programs to decode MP3 streams.
The mixer provides a greater range of input options. We can run a CDROM, microphones or an MP3 player right into the mixer and out to the Internet. The open-source radio show runs a full range of input to give the true radio feel when we broadcast. We use an audio mixer with six ports for input. Each host has his own microphone that jacks into the mixer, which then connects into the line-in port of the sound card. Any device that generates audio output can be plugged into the line-in port on the sound card.
Liveice requires specific audio input quality. The sound card, while it receives input, is still controlled by the tools within the operating system. In our case we use xqmixer to control the sound card hardware. On xqmixer, the record volume controls the streaming rate that Liveice receives as input. If the record volume is set too low, you will not hear any output. If it is set too high, Liveice clips the audio. Clipping is an audio engineering term that describes what happens when the audio signal is too strong for the hardware to handle—it “clips” off part of the signal, making it sound terrible. We adjusted our sound quality by tuning the record volume. It's simple: fire up your station and listen to yourself. If you do not hear anything, increase the record volume. If the playout is clipping, reduce the record volume until you get it right.
The http://www.opensourceradio.com/ show runs every Thursday night from 8:00 P.M. to 10:00 P.M. EST. We discuss open-source issues and use the full range of our mixing and MP3 conversion capabilities. Anyone can do what we have done. With the exception of the mixer, the computer hardware and the T1 connection, everything was free. You can easily download all of the software from the Internet to create an Internet radio station. We would also like to say that despite our sound, no small animals are injured during the course of our broadcast.
|Making Linux and Android Get Along (It's Not as Hard as It Sounds)||May 16, 2013|
|Drupal Is a Framework: Why Everyone Needs to Understand This||May 15, 2013|
|Home, My Backup Data Center||May 13, 2013|
|Non-Linux FOSS: Seashore||May 10, 2013|
|Trying to Tame the Tablet||May 08, 2013|
|Dart: a New Web Programming Experience||May 07, 2013|
- RSS Feeds
- New Products
- Making Linux and Android Get Along (It's Not as Hard as It Sounds)
- Drupal Is a Framework: Why Everyone Needs to Understand This
- A Topic for Discussion - Open Source Feature-Richness?
- Home, My Backup Data Center
- Readers' Choice Awards
- What's the tweeting protocol?
- Developer Poll
- New Products
- Reply to comment | Linux Journal
2 hours 33 min ago
- play with linux? i think you mean work-around linux
10 hours 59 min ago
- Where is Epistle?
11 hours 5 min ago
- You forgot OwnCloud
11 hours 34 min ago
- aplikasi free
14 hours 49 min ago
- Having a framework
14 hours 52 min ago
- Fix my computer
15 hours 32 min ago
19 hours 39 min ago
- Missed one
19 hours 59 min ago
- web Host
20 hours 7 min ago
Enter to Win an Adafruit Prototyping Pi Plate Kit for Raspberry Pi
It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Prototyping Pi Plate Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- Next winner announced on 5-21-13!
Free Webinar: Linux Backup and Recovery
Most companies incorporate backup procedures for critical data, which can be restored quickly if a loss occurs. However, fewer companies are prepared for catastrophic system failures, in which they lose all data, the entire operating system, applications, settings, patches and more, reducing their system(s) to “bare metal.” After all, before data can be restored to a system, there must be a system to restore it to.
In this one hour webinar, learn how to enhance your existing backup strategies for better disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible bare-metal recovery solution for UNIX and Linux systems.