a Rasperry Pi-based appliance that broadcasts video or audio via DILC servers. Below is the audio broadcaster part.
A. Audio Streaming
* Raspberry Pi (Model B)
* USB Sound Card
* Audio Computer Microphone
* USB Micro Cable with Power Brick (5 Volts, 2 Amperes)
* Ethernet Cable
B. For Programming
A. Installing and Running the Rasbian Wheezy OS (Operating System)
- Use Win32 Disk Imager to write a boot image to your SD Card.
- Download the Wheezy zip file and extract the file.
- Insert the SD Card into your Raspberry Pi and write the disk image file using the installed win32 Disk Imager.
B. Setting Static IP
- Check first the set-up by
then the line iface eth0 inet dhcp implies that the IP address is via DHCP which is dynamically registered by the router.This is what we want to change.
- Get Information
with these you will get the different information that we will use later such as:
inet address (Pi's Current IP Address)
Bcast (The Broadcast IP Range)
Mask (Subnet Mask Address)
netstat -nr or route n
(note that these commands will give you the same information)
Get also the
- Editing Network Configuration
open the file /etc/network/interfaces by:
sudo nano /etc/network/interfaces
change the line
iface eth0 inet dhcp
iface eth0 inet static
then after this line directly type the information that we gathered a while ago then save and exit by Ctrl+o and Ctrl+X
next is to reboot..
these will reveal the changes or try to ping it with your IP Address by
ping (your IP Address) -c 5
C.Programming for the Audio Streaming
After installing and running the OS of your Raspberry Pi, you are now ready to program the audio streaming.
Open the LX Terminal,
- Install PulseAudio and these preference GUI with the command
sudo apt-get install pulseaudio
sudo apt-get paprefs
- After the system being rebooted, next thing to do is to edit and add the following lines in the file /etc/pulse/daemon.conf by these command
sudo nano /etc/pulse/daemon.conf
resample-method = ffmpeg
default-sample-rate = 44100
alternate-sample-rate = 44100
after these save and exit by Ctrl+o and Ctrl+x
- To make the Raspberry Pi audio server appearing automatically in your "Sound Setting" on every client (PC) and the server (raspberry Pi).
sudo sed -i 's/AVAHI_DAEMON_DETECT_LOCAL=1/AVAHI_DAEMON_DETECT_LOCAL=0/g' /etc/default/avahi-daemon
- Activate the network feature of PulseAudio on both client and server.
For the server mark the following boxes
Network Server -Enable network access to local sound devices
Network Server -Allow other machines on the LAN to discover local sound devices
Network Server -Don't require authentication
For the client you want to stream from the server (Raspberry Pi)
Network Access -Make discoverable PulseAudio network sound devices available locally
- Reboot the both server and the client by:
After the system rebooted the Sound Setting should appear like these:
- To check if the streaming is working plug in the Computer Audio Microphone in the USB Sound card and start to talk. note that there will be a delay of 1000ms-2000ms.
- Catherine Bagotsay (developer)
- Dawn Benigno (consultant)
- Dan Villareal (consultant)
- Peter Sy (consultant)