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phofman's latest activity
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phofman
replied to the thread
Using OrangePi Zero2 as an equalizer between USB source and USB DAC
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Very nice. Just a note - since the newer kernel has async UAC2 gadget, the CDSP config should enable rate adjust. CDSP will hit (sooner...
Saturday at 1:19 PM
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phofman
replied to the thread
RPi4 + CamillaDSP Tutorial
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Does your RPi airplay receiver or your airplay source have volume control? Maybe your RPi3 analog output is too weak for your amp. Easy...
Friday at 8:09 PM
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phofman
replied to the thread
RPi4 + CamillaDSP Tutorial
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You can try hw devices - hw:CARD=Headphones, DEV=0 for playback and hw:CARD=Loopback,DEV=0 or 1 for capture, depending what device you...
Friday at 6:41 PM
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phofman
replied to the thread
RPi4 + CamillaDSP Tutorial
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Fix that russian if you want my help, please.
Friday at 6:32 PM
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phofman
replied to the thread
RPi4 + CamillaDSP Tutorial
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I wonder what the default:CARD=XXX actually does. IMO it's mixing dsnoop on capture and dmix on playback + plug. IMO it should be...
Friday at 6:28 PM
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phofman
replied to the thread
Using a Raspberry Pi as equaliser in between an USB source (iPad) and USB DAC
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So do I. RK3308 is designed specifically for audio and its feature set is quite unique. But Pi S does not expose all the handy...
Friday at 9:15 AM
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phofman
replied to the thread
Using a Raspberry Pi as equaliser in between an USB source (iPad) and USB DAC
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@godmax: Making any non-RPi ARM board work properly with any reasonably new kernel is ALWAYS a major fight. Most of SoC manufacturers...
Thursday at 1:33 PM
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phofman
replied to the thread
Using a Raspberry Pi as equaliser in between an USB source (iPad) and USB DAC
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That's correct behavior - the gadget alsa device provides data only when the USB host plays some audio. If not, the device is stalled...
Thursday at 10:51 AM
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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Robert, I am not comparing digital vs. analog volume control, but digital in the player/DSP vs. digital in the DAC. Volume control in...
Mar 27, 2024
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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I am afraid the latter is the case - if you arduously calculate an operation at gazilion precision and then throw away most of the...
Mar 27, 2024
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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@Frunse: I do not know your whole plan. But have you checked your DACs really have analog volume control? In the end it has the same...
Mar 27, 2024
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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Since HDMI is the clock master, I am not sure how the HDMI receiver would handle the I2S slave mode. IIUC that chip has also I2S...
Mar 26, 2024
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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IMO the HDMI I2S is 3.3V (most likely), RPi is 3.3V, maybe 5V tolerant, I do not know. IMO the 3.3V arduino is the correct choice.
Mar 25, 2024
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phofman
replied to the thread
Multichannel audio on a Pi will get a whole lot easier and cheaper!
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@Frunse : congrats to your project advancement. Just a note - is it necessary to use the 3.3-> 5V the level shifters? Those small...
Mar 25, 2024
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phofman
replied to the thread
UMIK-1 or any USB MIC unsuitable for timing measurements?
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IMO the problem with timing is that USB mics have no second analog input to which the loopback analog signal from the DAC could be fed...
Mar 23, 2024
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