Test results of linuxaudiodev.c
Hi -- here are results from testing linuxaudiodev from the latest CVS Python 1.6. This is on a Dell Dimension with on-board audio hardware: the Yamaha YMF724 chipset. I'm using the ALSA 0.5.8a driver (the latest as of a week or two ago, and the only one that supports the YMF724). Bottom line: the test sound plays, but it sounds horrible when played by linuxaudiodev. If I do this: $ play Lib/test/audiotest.au then Cardinal Fang comes through loud and clear. ("play" is a shell script wrapper for "sox", writing to /dev/dsp.) But if I do this: $ ./python Lib/test/regrtest.py test_linuxaudiodev he's still audible (and at the same volume), but very scratchy. Sounds kind of like a very over-driven amp, or like a cheap car radio that somebody attacked with a knife. [...some time passes...] OK, I just tried it on another machine, also a Dell but with a different sound chip: the Crystal CS4232. I'm pretty sure this one is using the OSS drivers included with the kernel, which is probably the second most important difference after the chipset itself. Bottom line: it also sounds horrible. Greg -- Greg Ward - software developer gward@mems-exchange.org MEMS Exchange / CNRI voice: +1-703-262-5376 Reston, Virginia, USA fax: +1-703-262-5367
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bwarsawï¼ beopen.com
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Greg Ward