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From: Anssi Hannula <anssi.hannula@mbnet.fi>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@lists.sourceforge.net
Subject: Re: [PATCH] Change the freq limit of speaker-test
Date: Tue, 21 Jun 2005 18:14:55 +0300	[thread overview]
Message-ID: <42B82EEF.3020401@mbnet.fi> (raw)
In-Reply-To: <s5hpsufoigm.wl%tiwai@suse.de>

Takashi Iwai wrote:
> At Tue, 21 Jun 2005 17:50:36 +0300,
> Anssi Hannula wrote:
> 
>>Takashi Iwai wrote:
>>
>>>At Fri, 17 Jun 2005 21:14:48 +0300,
>>>Anssi Hannula wrote:
>>>
>>>>I noticed that the speaker-test has limited sine wave frequency to 
>>>>50-5000 Hz. Attached patch changes that to 0-24575Hz (that's the limit 
>>>>at least here (x86-64) after which the freq would roll over to 0 Hz).
>>>
>>>Does freq=0 really work?  I think this will result in zero-division.
>>
>>Well, it produces the expected output (no sound) and does not crash.
> 
> Strange.  Anyway, accepting freq = 0 doesn't make sense.
> I think we should keep reasonalbe minimal/maximal values to produce
> tones.

I understand that 0 doesn't make any sense.
But I think we should still change the limits, so that users can 
experiment things and test their hardware (someone asked for tone 
generator in VDR ml, I replied with speaker-test, but it didn't produce 
high enough tones) etc, and it wouldn't hurt.

-- 
Anssi Hannula



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  reply	other threads:[~2005-06-21 15:14 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-17 18:14 [PATCH] Change the freq limit of speaker-test Anssi Hannula
2005-06-21 11:03 ` Takashi Iwai
2005-06-21 14:50   ` Anssi Hannula
2005-06-21 15:08     ` Takashi Iwai
2005-06-21 15:14       ` Anssi Hannula [this message]
2005-06-21 15:26         ` Takashi Iwai

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