skip to Main Content

Extending Our Whole House Audio To The Back Yard

audio-trioLike many people we have a wooden deck at the back of the house into the back yard. It has long been my intent to extend our ability to play music to the back yard, but it has only recently com to pass. It’s essentially the next step in my long standing plans to deploy Whole House Audio, a project that recalls some of the earliest posts to this site.

As I described so long ago, we love our Logitech Squeezeboxes. They still form the basis of how we play music around here, even though Logitech has abandoned the product line. In fact, when my one Squeezebox Touch died I was inspired to purchase another Squeezebox 3 on E-bay, just to have a spare.

Read More

Confirming The Quality Of One’s Tools

Zoom-H2-Nexus7-AudioTool.jpgWhen experimenting with a new audio path I like to take measurements. Long ago, in an age of techno-pre-history known as the late 1980’s,  I craved what were then an emerging class of computerized test instruments, like the Audio Precision System One. Happily, today such costs are unwarranted given the current class of programmable smart devices. I’ve been very happy with Audio Tool For Android running on my Nexus 7 tablet.

If I am to trust the measurements that Audio Tool allows me to make I need to start by confirming the validity of it’s measure using a known reference signal. I was also making use of the Zoom H2 Handy Portable Stereo Recorder, so I decided to record the output of the sweep generator in Audio Tool to the H2. Then I tool the resulting WAV file into Adobe Audition to see what resulted.

Read More

Experimenting with Opus I: PhonerLite

Opus-LogoInspired by my earlier interaction with Mike Phillips I thought it would be interesting to get some hands on experience with Opus. It would be worthwhile staging a little test to better understand the audio path presented in one or more Opus implementations.

A quick Google search revealed that PhonerLite, the freeware Windows soft phone from Germany, includes Opus from the v1.92 release onward. According to the release notes support for Opus replaced support for CELT. The current release is v2.08 from April 16, 2013.

I had first encountered PhonerLite some time ago, when I was seeking a G.722 capable soft phone. It’s very functional but a bit quirky.

Read More

Considering Opus Implementations

Opus-over-skypeOpus promises to be a great tool for online audio. In technology, as in music, not all opus are implemented equally. Allow me to explain.

Earlier this week I happened into a Twitter exchange with Mike Phillips. Mike is a podcaster. VUC founder Randy Resnick has introduced us once before. Mike is seeking a replacement for the role that Skype plays in his online toolbox.

It came to light that Mike has tried to leverage various soft phones, even giving some focus to finding one that implements the Opus codec. Opus is after all, open source, the current state-of-the-art in audio codecs, and a new IETF standard. However, in Mike’s attempts to tap its potential he has to date come up short relative to Skype.

Read More

The Logitech Squeezebox Lives On

squeezebox_mr.jpgThis past week I bought our fifth Squeezebox streaming music player. It’s a used Squeezebox Classic sourced via E-Bay for a rather approachable $89. This new-to-us Squeezebox replaces a Squeezebox Touch model that failed a few months ago.

We now have three in service and two that have failed. Two failures over about eight years is completely tolerable. We remain committed to using the Squeezeboxen even if Logitech has discontinued the line.

I think that Logitech stumbled in their decision to discontinue the Squeezebox line. The product range has a substantial and very loyal user base. It will continue to do so since they have ported both the Squeeze Center Server and Squeezebox player software to the little Raspberry Pi SBC.

Read More

Auphonic: A Free Online Tool For Automatic Audio Post-Production

auphonic-logoOpen source guru Randal Schwartz of FLOSS Weekly recently interviewed Georg Holzmann of Auphonic.com about their new online service for post-processing audio files for podcasts. Auphonic.com sounds very interesting indeed.

In the past the routine production of the VUC podcasts involved the use of The Levalator from The Conversations Network. That program, while a potent tool, is run locally and limited to processing uncompressed WAV files. This places a certain burden on the user to know how to create the appropriate source files, and later on to encode the processed files for publication online.

Read More
Back To Top