[EDIT: I mistakenly reported that Rdio averaged 40 kbits/s, when in fact it averaged 40 kbytes/s)
Rdio is my current (de jour) music streaming service . I was using Slacker Radio, but I've switched to Rdio and I vastly prefer it. Being located in Canada, the options for streaming music services are pretty limited, but generally speaking I'm quite happy with Rdio (although I get pretty annoyed with the number of albums not available in Canada... probably about 1/4-1/3 of the total I search for).
Rdio has been infamously cagey about what kind of quality they are delivering. They say that their iPhone app uses a higher bitrate stream when on WIFI, compared to 3G, and they claim that the web and Adobe AIr application have "
CD Quality" streams. For comparison,
Chris Breen suggests that many of the competitors offer between 128kbits/s to 320 kbits/s (320 kbits/s LAME encoded MP3s are generally considered "transparent", that is, indistinguishable from CD quality sound).
Generally speaking, I think Rdio streams are
acceptable. I've got something of a tin ear, and a decent but by no means audiophile setup (T-amp with Mission 700 Leading Edge speakers, streamed through Apple Airport Express), and I don't feel like I'm missing much. Yet, in the interest of science, I conducted a quick real world bitrate test. Using
Wild Nothing's Gemini album, on my Rogers 25mB/s cable connection, over WIFI (B/G class) I monitored my network traffic using
Codebox Software's BitMeter OS application.
Here's the results (I'll continue to monitor the stream, and if it looks like these are unusual results I will post an update):
The bitstream spikes and then drops way down, pretty consistently, and averages just under 40kbytes/s (320kbits/s). So, CD quality indeed.
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