¿ªÔÆÌåÓýHey Chris, ? a.?????? It is on multiple inputs all with DMC-4K-HD-DSP or DMC-HD-DSP cards; on the non¡ªDSP cards I¡¯m just using 2-channel EDID and this isn¡¯t an issue. b.????? On the ¨CDSP input cards it doesn¡¯t seem to be a problem if I force 2-channel EDID; DM input EDID on the 4K-SCALER-Cs is already set to consumer 1080p 2 channel PCM c.?????? Nope, they¡¯re fairly far apart (one is on output 2, the other is on output 5). Both are DMC-CO-HD cards because I haven¡¯t accumulated enough of the -4K-CO-HD/-4K-HDO cards to swap that entire bank yet¡and again this happened with the non-4K-versions of input cards and scalers as well so I don¡¯t think that¡¯s an individual input- or RMC- issue. d.????? I¡¯m suspecting what¡¯s happening is the source is flipping audio types when resuming from pause (¡°catching¡± it once in DM tools the audio line went to blank, then 2-ch PCM, then Dolby Digital 6 Ch and wobbled a couple times between those two); the display that gets noticeably louder for a few seconds I think supports faux-multchannel and may be getting a multichannel stream for a few seconds and doing its own down-mix before getting the 2-ch PCM; the Cisco CODEC definitely doesn¡¯t support multichannel audio and neither the EDID it presents to the HDMI source (in this case a RMC-4K-SCALER-C) and the DM input EDID for the scaler are set to 2-channel only¡. But shouldn¡¯t the DSP be processing the digital signal regardless? It¡¯s seeming like the DSP is ¡°dropping out¡± and passing the raw audio with spectacularly poor results. Given that both outputs do ¡°bad things¡± for the same amount of time I don¡¯t think it¡¯s a display/sink issue. ? -- Lincoln King-Cliby, CTS, DMC-E-4K/T/D ? From: [email protected] [mailto:[email protected]]
On Behalf Of ckangis
Sent: Thursday, May 19, 2022 5:37 PM To: [email protected] Subject: Re: [crestron] Odd DM multichannel audio issue (or do I not understand how the -DSP cards are supposed to work)? ? DSP cards are all we deal with out here in RESI land!? ?I have confirmed that with the -DSP input cards, that both the multi and 2-chan audio streams are available on the backplane and thus at the scalers, I assume that the device chooses
what it wants/can handle... |
