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Re: ALSAPulseAudio procedure

From: Barry Duggan
Subject: Re: ALSAPulseAudio procedure
Date: Fri, 3 Jul 2020 06:02:18 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0


Just as one has to do with getting a file from Github, you have to click on the 'Raw' button before you copy the file with your text editor. Once you do that, you will have the correct format.

For good measure, attached is the grc file.

BTW, Ryan gave me the info I needed about the PulseAudio page.

Barry Duggan KV4FV

On 7/3/20 4:28 AM, Cinaed Simson wrote:
Hi Barry - the GRC isn't an image or binary file - it's a text based XML file.

Send it as an attachment to your email.

If I recall correctly, uploading a GRC file to pastbin.com and then downloading it destroys the flow graph (the XML formatting) and reduces the GRC flowgraph to a stack of text from the blocks.

Try it.

-- Cinaed

On 7/2/20 4:26 AM, Barry Duggan wrote:
Hi Cinaed,

The Pluto_NFM.grc is in https://pastebin.com/XZN0dK6x  I have found that reducing the buffer size on the Pluto almost eliminated the audio underruns.

So what I am left with is needing to know what is wrong with the procedure in https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Monitoring_the_output_of_your_system

I have been doing a lot of documentation updates and would like to correct / improve that page.

Thanks for your help.
Barry Duggan KV4FV

On 7/1/20 4:53 PM, Cinaed Simson wrote:
Hi Barry - can you post the GRC file (no images please) for when the audio doesn't work correctly?

-- Cinaed

On 7/1/20 5:43 AM, Barry Duggan wrote:
Hi Cinaed,

Thank you for your response. Yes, I have tried those and the "hw:CARD=Generic,DEV=0" works well for most flowgraphs. I obtained that from the 'aplay -L' command.

Let me reiterate my request: In exploring the audio problems, I followed the instructions in https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Monitoring_the_output_of_your_system and it gave the error I cited. So what I want to know is: Did I do something wrong, or is the procedure not correct?

I need someone who is familiar with the ALSA and PulseAudio software to look at this.



Attachment: Pluto_NFM.grc
Description: Text document

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