I submitted a patch to do just this upstream.
http://git.alsa-project.org/?p=alsa-
utils.git;a=commit;h=3b1ee6b325926336564c73c5c22831b59f404805
** Changed in: alsa-utils (Ubuntu)
Assignee: (unassigned) => Erik Ackermann (domohawk)
** Changed in: alsa-utils (Ubuntu)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/321477
Title:
speaker-test: limited user freedom and utility
Status in “alsa-utils” package in Ubuntu:
Fix Committed
Bug description:
Binary package hint: alsa-utils
The speaker-test utility in alsa-utils restricts the sine wave
frequency to 50-5000Hz.
Therefore:
> speaker-test -test sine -f 30
outputs a sine wave of 50Hz instead of the specified 30Hz.
While the author of the code introduced such restriction to prevent
people causing physical damage ( to their speakers or even themselves
) it restricts the users freedom and lowers the application of the
utility as a signal generator.
For example, while creating a sound system for a car, you may test the
speakers work at varying frequencies below 50Hz but would be unable to
do so with speaker-test.
I propose that a new switch is added to the program that is not affected by
the restriction ( or disables the restrictions ) and modify the description of
the existing switch. For example:
-f,--frequency sine wave frequency in Hz (50-5000). See
--force-frequency
--force-frequency forces the frequency even if outside the 50-5000Hz range
I may be able to provide a patch to do this but I have not programmed
in the speaker-test source language ( C? ) before so it would require
some scrutiny.
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