The Raspberry Pi foundation has released a new variant of the Pi4. The new models is the same as last years model, but with 8GB of memory for $75. They also offer a new 64 bit Pi OS, which is…
Long, long ago, in the earliest days of this blog, I described my DIY approach to a whole house audio system. The strategy centers around a collection of Logitech Squeezebox 3 streaming audio players, each mated to a pair of powered audio monitors. All this worked great until the aging SB3s started to fail. Drying electrolytic capacitors cause arthritis in electronics.
Faced with failing SB3s, and the occasional desire to grow the installation, I resorted to using a most excellent combination of the Raspberry Pi3 B+ single board computer running PiCorePlayer in combination with a HifiBerry DAC. I’ve got HiFiBerry DAC+ where –10 dbm RCA output is suitable and DAC Plus Pro XLR where +4 dbm XLR balanced output is required.
The RPi, HiFiBerry and PiCorePlayer combination work great! They outperform the original SqueezeBox 3 in every way, save the lack of an IR remote control. Also, they cost less, even with the fancy metal case.
All the above is preface to help explain something that I discovered this past weekend. There’s a fundamental difference between the behavior of the SB3 and a RPi/HFB combination.
Earlier this week, The MagPi, the official Raspberry Pi magazine, published a how-to article on creating a wee PBX using a Raspberry Pi, RasPBX and a couple of SIP phones. They invite people to “Transform your humble home phone line…
There is no question that Newtek’s NDI is rocking the world of video production. Whether in corporate video, educational video, live streaming or low-end broadcast, it allows a transition to IP transport that’s profoundly attractive in many ways.
NDI delivers high quality video at very low latency, under one frame of video. A 1080p60 NDI stream requires at most around 150 mbps. This is ideal for production applications, which are quite separate from transmission/delivery, where lower bitrates are preferred and some seconds of delay is tolerable.
In the early days of NDI, if you needed to view an NDI signal on a monitor that required a Windows PC running NDI Studio Monitor. This is an application that can pick the stream off the network and display it on a monitor. It has some nice features, like the ability to overlay a second stream (picture-in-picture) and show audio metering.
The combination of Asterisk and Raspberry Pi harkens back to a time when I was seeking to run Asterisk on an small, embedded platform. I was a little ahead of the curve, seeking this before Digium released AsteriskNOW. I tried…
Some time ago I received a Raspberry Pi B+ as a gift. It had been on my amazon wish list, and for good reason. It looked like one practical approach to emulating the venerable Logitech Squeezebox, which to this day serves as the basis for music playback hereabouts.
Since we were not expanding our music playback scheme there was at first little motivation to got ahead with this effort. That is, until the analog outputs of our existing fleet of Squeezeboxes started to fail. Eventually the analog outputs become unusable, the result of failing electrolytic capacitors. Three of our five SB3s now suffer this malady.
So, not long ago I set to the task of emulating a Squeezebox using a Raspberry Pi 2 Model B, a HiFiBerry DAC and a 4 GB micro-SD memory card. To this core I added a suitable case, a power-over-Ethernet splitter and piCorePlayer. All in, this rig cost under $100.