Mat Thank you for your time and effort to reply: Den 05.10.2021 21:26, skrev mat via Cin: ........snip
=== Terje:===== 5) I am unsure how to practically go from here to record the Audio music files. ================
8) Which tab/buttons for input in Audiacity (possibly tape/noise filters) - I could not find the PCM2902 input or see any sound response here
I suggest to try Audacity first. In Edit->Preferences->Devices, Host Alsa, playback device pulse, recording default (or pulse), 1 or 2 channels as desired. Edit->Preferences->Recording, record on new track (each time you start a recoding you get a new audio track). Then, on the main menu, click on the filed that says "click to start monitoring", this will send input to output, so if your output device is line out it will come out there. For recording, the red button starts recording, the black square button stops. The advantage of using Pulse is that pavucontrol will show recoding applications, you should also see the signal coming in when an application is recording (has opened the input channel). This can be seen on the Input Devices tab.
You don't see the device as such, it is "abstracted" by both Also and then PulseAudio.
=== Terje:===== 9) Would it be reasonable to record and archive in lossless FLAC format and afterwards convert with ffmpeg? to smaller files format of good quality, typical MP3 at 320 kbps (for car usb player) and MP4A for home HiFi? ================ FLAC is very good, it itself is lossless. Audacity can export to a variety of formats (File->Export), I usually use mp3 or wav. Note that if you do a lot of editing on a recording is it better to save the project, that avoid converting back-and-forth between flac and the interanl Audacity 32 bit floats. Audicity is a good editor, you record first, save the original recoding, then apply filters/effects/cuts etc . Like CinGG, keep the original intact.
Offhand, I'd say you must have extremely good hearing to hear differences between MP3 320kbps and the original. For cars, I myself would not go above 128 kbps. MP3 at 320 kbps is much better than most home HiFi. And if the source is not digital, (but tape or cassette), 128 kpbs MP3 is already much better than the source material.
........snip I understand and aggree with you regarding MP3 128 kbps for tape and cassette sources. Rather than highest bit-rate often variable bit-rate is used. I just wonder what is the original recording format used by Audiacity, i.e something compatible for playback by other programs? In the meantime, and before I continue with Audiacity, I recorded a few simple test clip (from my Audio CD through UFO202) with two small audio recording programs. Of interest regarding MP3 format, "gnome-sound-recording" looks to apply 320 kbps Variable, while "audio-recording" rather uses 48 kbps Variable (tool dependent). audio-recorder describes flac, mp3, m4a (aac) 44khz) as "cd-quality". File format output as follows: ======================= *gnome-sound-recorder* ~/Recordings> file *.* Clip-5.ogg: Ogg data, Vorbis audio, stereo, 44100 Hz, ~112000 bps, created by: Xiph.Org libVorbis I Clip-6.flac: FLAC audio bitstream data, 16 bit, stereo, 44.1 kHz, length unknown Clip-7.mp3: Audio file with ID3 version 2.3.0, contains:MPEG ADTS, layer III, v1, 320 kbps, 44.1 kHz, JntStereo ~/Recordings> mediainfo *.* | egrep 'name|Format|bit rate' Complete name : Clip-5.ogg Format : Ogg Overall bit rate mode : Variable Overall bit rate : 103 kb/s Track name : /home/terje/Recordings/Clip 5 Format : Vorbis Format settings, Floor : 1 Complete name : Clip-6.flac Format : FLAC Format/Info : Free Lossless Audio Codec Overall bit rate mode : Variable Track name : /home/terje/Recordings/Clip 6 Format : FLAC Format/Info : Free Lossless Audio Codec Complete name : Clip-7.mp3 Format : MPEG Audio Overall bit rate mode : Variable Track name : /home/terje/Recordings/Clip 7 Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo ================ *audio-recorder* ~/Lydopptak> file *.* 2021-10-05-21:27:18.flac: FLAC audio bitstream data, 16 bit, stereo, 44.1 kHz, 4428081 samples 2021-10-05-21:42:41.mp3: Audio file with ID3 version 2.3.0, contains:MPEG ADTS, layer III, v1, 48 kbps, 44.1 kHz, JntStereo 2021-10-05-21:44:29.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 44100 Hz 2021-10-05-21:46:39.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 22050 Hz ~/Lydopptak> mediainfo *.* | egrep 'name|Format|bit rate' Complete name : 2021-10-05-21:27:18.flac Format : FLAC Format/Info : Free Lossless Audio Codec Overall bit rate mode : Variable Overall bit rate : 1 145 b/s Format : FLAC Format/Info : Free Lossless Audio Codec Complete name : 2021-10-05-21:42:41.mp3 Format : MPEG Audio Overall bit rate mode : Variable Overall bit rate : 31.8 kb/s Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo / MS Stereo Complete name : 2021-10-05-21:44:29.wav Format : Wave Overall bit rate mode : Constant Overall bit rate : 1 411 kb/s Format : PCM Format settings : Little / Signed Complete name : 2021-10-05-21:46:39.wav Format : Wave Overall bit rate mode : Constant Overall bit rate : 353 kb/s Format : PCM Format settings : Little / Signed ------------ Terje