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hpr_transcripts/hpr3507.txt

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+Episode: 3507
+Title: HPR3507: USB Turntable fix and sound journey
+Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr3507/hpr3507.mp3
+Transcribed: 2025-10-25 00:40:48
+
+---
+
+This is Haka Public Radio episode 357 for Tuesday 11th of January 2022.
+Today's show is entitled, USB Tone Table Fix and Sound Journey.
+It is hosted by Archer 72 and is about 9 minutes long and carries a clean flag.
+The summary is USB Tone Table Fix and Sound Journey with our report,
+a sound of FFMPEG.
+Hello Haka Public Radio, this is Archer 72 and in this episode this is my journey into sound,
+specifically vinyl sound. It started about two years ago and I was collecting a couple of albums
+before I even ran into getting a deal on a record player.
+Some of my collection include songs from Journey from the albums, frontiers,
+evolution, the greatest hits album and departure and two albums from Chicago.
+They don't have a title on them so I don't have a title on them but one is a single record
+and the other is a book of four. Then there is John Denver Rocky Mountain Christmas
+and then Inside Star Trek, which was
+from a live broadcast in 1967 I believe.
+Direction the album was from 1976 from CBS Studios.
+It includes William Shatner, a meeting captain Kirk, the origin of Spock,
+Ceres Sun Spock, and on site two McCoy's prescription for life, Star Trek Philosophy,
+Asimov's World of Science Fiction, a letter from a network sensor and the Star Trek Dream.
+With the exception of the albums that I heard heard from my upstairs neighbors around
+in the United States Independence Day, they would play patriotic music there
+and saw it here from upstairs. I hadn't heard one in quite a while.
+A couple of weeks ago I found a turntable at my wife's thrift store where she works,
+it's called the Savers and I noticed the spindle ran while I was plugged in but the platter was
+not turning or showing any signs of life but the belt had just slipped off and I figured I could
+do something with it so I found something on YouTube and it's just a matter of putting the belt
+back onto the platter and then kind of stretching over the spindle through the
+middle part of the hole in the platter.
+After I put the rubber platter cover back on, I checked out a journey record and I didn't have
+it going through a sound system. I just wanted to see if it was what would even play through
+the needle preamp and I did. So then I found a tutorial using alceloop
+to send output through the HDMI from the Raspberry Pi to the TV.
+I'll post the command but also I looked and it will also post the man page for alceloop
+and it's using alceloop dash t and 500,000 which is turnt. It's in microseconds so that's about a half a
+second delay between when it comes through the Raspberry Pi and when it outputs the TV
+and then on other parameter that I wasn't sure about
+it says default card equals b1. I found out that was found by using the aplac command dash
+lorqsl and that verified that it was correct card I was using. So for the first time in 30 years
+I heard a vinyl record.
+The next idea was to try recording either wave or flag on it to try both and the first thing I
+came across was a tutorial for using a record and they used a record dash d for device and pulse
+and there's a dash v flag to put in there and it gets this stereo view meter on the command line
+and then there's dash c for channels which you want to dash f is d at and that's for a special
+device and dash d for duration which they had said at 900 and out.wave.
+There was one change I made in this command and it was derived from using a record dash capital L
+and I picked under trial error I picked hard work call on equals card equals codec
+comma dev equals zero and this did work only after I killed also loop because you can't have two
+sound devices at the same time. The next thing I tried was recording to flag and I was able to do
+that thankfully to a unit stack exchange where they were asking how to record from mic audio straight
+to flag. I could have also and that's using ffnpeg and I could actually use that to have created
+the way file. The command they give is ffnpeg dash f also dash ar for audio rate 48000
+dash ac1 dash i for input hard work hole in zero and the output is test file dot flag.
+I made a couple of changes here too I took out dash ac1 which was down mixing the input to
+to mono and I found that from the ffnpeg.org site to describe how to do different channel
+minute audio channel manipulation. I also had to change hw colon zero which is hardware
+to hw colon two which was based on a record dash lower k cell and that gave me the sound card
+two which so I knew what to put in for a type of hardware I'm using.
+My resulting command was ffnpeg dash f file uses the also sound system
+and dash ar for audio rate of 48000 dash input of hardware colon two hw colon two
+and my output file was test file underscore stereo dot flag and of course I found out that I could
+also if I do that same test file dot wave then I get a full wave file and I'll leave the link
+in the show notes about doing the audio channel manipulation.
+Thank you for listening. Until next time. Bye.
+You've been listening to Hecker Public Radio at Hecker Public Radio dot org.
+Today's show was contributed by an hbr listener like yourself. If you ever thought of recording
+a podcast then click on our contributing to find out how easy it really is. Hosting for
+hbr is kindly provided by an honest host.com the internet archive and our sync.net unless otherwise
+stated today's show is released under a creative commons,
+attribution, share like, flea dot org license.