linuxonly
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Thread Starter
- Joined
- Jul 27, 2024
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- Preamp, Processor or Receiver
- Logitech Z906
- DAC
- AMD FCH Azalia
- Computer Audio
- SPDIF output with alsa, pipewire, wireplumber on Fedora 40
- Streaming Equipment
- Kodi
- Front Height Speakers
- 33 in
- Middle Height Speakers
- 30 in
- Rear Height Speakers
- 57 in
- Video Display Device
- X11/VGA + X11/DVI
REW supports hdmi audio multichannel, however it doesn't seem to support spdif multichannel, only stereo. am i wrong?
I use SPDIF actually to connect to my AVR, a Logitech Z906. And with REW I'm only able to output sound to its L and R channels and naturally the subwoofer.
My computer, the Fatal1ty FM2A88X+ Killer motherboard does support HDMI audio via its AMD A10-7850K Radeon R7 4C+8G (4) @ 3.700GHz CPU. Theoratically.
I don't use the HDMI output at all at this moment. My monitor is using DVI-D and my TV is using VGA video inputs.
My question is assuming I purchase an inexpensive HDMI to SPDIF converter like https://www.amazon.ca/LinkS-SPDIF-Extractor-Converter-Chromecast/dp/B00XJITK7E for example - there are dozens of models - would REW easily recognize my 6 audio channels that it doesn't see using SPDIF, for I can measure each one individually and align them in time and frequency domain? That is without having to reconfigure every audio client/server in the computer.
Or as an alternative, could we expect REW to see all the 6 SPDIF channels natively in a future update? For that to happen I understand they would have to be demultiplexed, processed, and remultiplexed, correct?
Goal is to address, measure, and correct each and every 6 speakers connected to my Z906, which I cannot do using SPDIF. Analog audio is not an option. It's broken anyways, I purchased this board 2nd hand and no analog audio working.
Last but important, system is Fedora Linux 40, with pipewire. The Z906 has a SPDIF input + analog inputs but no HDMI.
So far REW did an excellent job for the R and L channels, but the other 4 are left unoptimized i.e. the subwoofer isn't probably in proper phase with the front speakers and the rear speakers were left unprocessed. The Z906 can be manually switched with the effects button, between 2.1 (stereo), 4.0 where front speakers are duplicated on rear speakers, 5.1 upmixing, and automatically decode multichannel 5.1 mode when compatible format is detected. Therefore it's actually optimized for stereo using convolver impulse files produced by REW. In 4.0 mode the result is terrible and in 5.1 multichannel mode, the convolver is deactivated because easyeffects supports only stereo.
I'm perfectly satisfied with my hardware for music (stereo), movies (stereo or multichannels) and my Z906. It's not hifi (with the meaning it has originally in the 70s), but it's OK. My hifi system is another project once this Fedora/Asrock is advanced enough to my satisfaction. I'm making progresss, but its step by step. My knowledge with psychoacoustics dates from the alalog era where we used compression/expansion with NE572 ICs, delay lines using TDA1022 or SAD1024 and active LPF, BPF and HPF using op amps, graphic LRC equalizers and preamps where the bass/treble were not centered at say 1kHz, but variable throughout all the audio spectrum, separately. I was a very active electronic hobbyist. I'm totally new to digital audio and there is a lot of reading to grok the entire panorama and the possibilities.
I hope I'm clear anough, it's getting late.
I use SPDIF actually to connect to my AVR, a Logitech Z906. And with REW I'm only able to output sound to its L and R channels and naturally the subwoofer.
My computer, the Fatal1ty FM2A88X+ Killer motherboard does support HDMI audio via its AMD A10-7850K Radeon R7 4C+8G (4) @ 3.700GHz CPU. Theoratically.
ASRock > Fatal1ty FM2A88X+ Killer
A-Style : ASRock Cloud, Purity Sound™; Gaming Armor, » CPU Power - Hi-Density Power Connector, » VGA Card - 15μ Gold Finger + CrossFireX™ Power Connector, » Internet - Qualcomm Atheros Killer™ LAN, » Audio - Purity Sound™; Supports Socket FM2+ 95W / FM2 100W processors; Premium Gold Capacitor...
www.asrock.com
I don't use the HDMI output at all at this moment. My monitor is using DVI-D and my TV is using VGA video inputs.
My question is assuming I purchase an inexpensive HDMI to SPDIF converter like https://www.amazon.ca/LinkS-SPDIF-Extractor-Converter-Chromecast/dp/B00XJITK7E for example - there are dozens of models - would REW easily recognize my 6 audio channels that it doesn't see using SPDIF, for I can measure each one individually and align them in time and frequency domain? That is without having to reconfigure every audio client/server in the computer.
Goal is to address, measure, and correct each and every 6 speakers connected to my Z906, which I cannot do using SPDIF. Analog audio is not an option. It's broken anyways, I purchased this board 2nd hand and no analog audio working.
Last but important, system is Fedora Linux 40, with pipewire. The Z906 has a SPDIF input + analog inputs but no HDMI.
So far REW did an excellent job for the R and L channels, but the other 4 are left unoptimized i.e. the subwoofer isn't probably in proper phase with the front speakers and the rear speakers were left unprocessed. The Z906 can be manually switched with the effects button, between 2.1 (stereo), 4.0 where front speakers are duplicated on rear speakers, 5.1 upmixing, and automatically decode multichannel 5.1 mode when compatible format is detected. Therefore it's actually optimized for stereo using convolver impulse files produced by REW. In 4.0 mode the result is terrible and in 5.1 multichannel mode, the convolver is deactivated because easyeffects supports only stereo.
I'm perfectly satisfied with my hardware for music (stereo), movies (stereo or multichannels) and my Z906. It's not hifi (with the meaning it has originally in the 70s), but it's OK. My hifi system is another project once this Fedora/Asrock is advanced enough to my satisfaction. I'm making progresss, but its step by step. My knowledge with psychoacoustics dates from the alalog era where we used compression/expansion with NE572 ICs, delay lines using TDA1022 or SAD1024 and active LPF, BPF and HPF using op amps, graphic LRC equalizers and preamps where the bass/treble were not centered at say 1kHz, but variable throughout all the audio spectrum, separately. I was a very active electronic hobbyist. I'm totally new to digital audio and there is a lot of reading to grok the entire panorama and the possibilities.
I hope I'm clear anough, it's getting late.
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