How to check current PulseAudio sampling rate and other parameters?

# pacmd list-sinks
Daemon not responding.
http://askubuntu.com/questions/299597/g … d-bit-rate

lucke wrote:Did it mention having permission denied to /run/user/1000? If so, "chown bbarcher.users /run/user/1000" and perhaps "pkill pulseaudio; pulseaudio &".
On pulse restart I get
Unable to contact D-Bus session bus
And a whole galore of errors.

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1. I need to have more data points, thus I increase the sampling rate(SR). When sampling rate is increased, Block size(BS) will increase correspondingly.
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Message Edited by JasTan on 03-24-2008 05:37 AM

Generally, the DASYLab sampling rate to block size ratio should be between 2:1 and 10:1.
If your sample rate is 1000, the block size should be 500 to no smaller than 100.
Very large block sizes that encompass more than 1 second worth of data often cause display delays that frustrate users.
Very small block sizes that have less than 10 ms of data cause DASYLab to bog down.
Sample rate of 100 samples / second and a block size of 1 is going to cause DASYLab to bog down.
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Q1 - without knowing more about your hardware, I cannot answer the question, but, see above. Keep the block size ratio between 2:1 and 10:1.
Q2 - without knowing more about your hardware, and the driver, I'm not sure that I can fully answer the question. In general, the DASYLab driver instructs the DAQ device driver to program the DAQ device to a certain sampling rate and buffer size. The DASYLab driver then retrieves the data from the intermediate buffers, and feeds it to the DASYLab A/D Input module. If the intermediate buffers are too small, or the sample rate exceeds the capability of the built-in buffers on the hardwar, then data might be overwritten. You should have receive warning or error messages from the driver.
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Have you contacted your DASYLab reseller for more help? They should know your hardware better than I do.
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How to check current PulseAudio sampling rate and other parameters?

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