[linux-audio-dev] Measuring playback and capture quality.

[James Courtier-Dutton]

James Courtier-Dutton wrote:
> fons adriaensen wrote:
>> On Sat, Apr 08, 2006 at 05:17:14PM +0100, James Courtier-Dutton wrote:
>>> Hi,
>>>
>>> Are there any linux tools out there that will sample the line in, and 
>>> display a detailed spectrum scope of the detected sound?
>>>
>>> E.g.
>>> http://www.pcavtech.com/soundcards/ct462048/SNR_LB_FS.gif
>>>
>>> Eventually I wish to send a test signal from one sound card to 
>>> another and compare the frequency response/noise etc. of the line 
>>> input of the card.
>>
>> For 'technical' measurements: JAAA
>> For 'musical' measurements: JAPA
>>
>> Both at <http://users.skynet.be/solaris/linuxaudio>
>>
>> The JAAA release is quite old now and shows it. Improved looks version 
>> soon.
>> Don't forget the shared libs at the bottom of the page.
>>
> 
> Neither of those applications work.
> I have ardour working fine with stereo in/stereo out.
> 
> jaaa -J seems to talk to jack, but does not capture or play any sound.
> jaaa -A fails to even open the alsa device.
> 
> jdelay also does not work. Responding with "Signal below threshold..."
> 
> Have these application actually been tested with jackd recently?
> 
> James
> 
> 
My mistake. Please ignore.