Got a cheap joyroom dongle . It works on PC as well as Phone . How exactly !

[mt8848]

On the PC it shows as 16 bit 44100 Hz device . Sounds clean than the Laptop . Microphone doesn't work , it seems to cut off unless brought really close to the mic and shouted at.

On the Phone , it sounds great , Loud . Phone has Dolby Atmos and it has its own processing . It is responding well to the changes and sounds as per the changes . Microphone doesn't work like before .

Now , I want to know what am i listening through . Is it the 16 bit 44100Hz sound card or the supposedly Hi-Fi certified Phone audio . Is it passing through , How do these dongles behave .

Not an Experienced one in Hi-fi audio but can distinguish between 128 kbps mp3 vs 320 kbps .

 

[litemotiv]

Dongles generally work as an external sound card (DAC + amplifier), so the PC or phone sends the original data to the dongle which then does the D/A conversion and the amplification. It won't make a difference if the phone is 'Hifi-certified', the quality of the electronics in the dongle will determine the quality of the resulting sound.

 

[mt8848]

Dongles generally work as an external sound card (DAC + amplifier), so the PC or phone sends the original data to the dongle which then does the D/A conversion and the amplification. It won't make a difference if the phone is 'Hifi-certified', the quality of the electronics in the dongle will determine the quality of the resulting sound.

How is the Dolby Atmos processing working on the dongle DAC ?

 

[litemotiv]

How is the Dolby Atmos processing working on the dongle DAC ?

If Atmos processing makes a difference in sound signature and it's a feature of the phone, then this would probably mean it's a lossy intermediate step. This would mean that the phone is decoding the signal, adding the Atmos processing, then re-encoding it and sending it to the dongle, which then in turn decodes it again for output.

 

[Jimbob54]

Almost certainly in both instances you are listening to the dongle. The real question is what digital processing is happening from the source file to it going to the dongle to then be converted to analog as @litemotiv discusses above. That is not always obvious from the readouts on whatever device your looking at. It doesnt really matter as long as the sound you hear out of the dongle is better than what you get straight out of the PC or phone.

 

[mt8848]

That makes sense . Dolby Atmos is just software( digital) processing like a system wide equalizer and not any part of HiRes hardware .

Now , how do they even get Analog audio out of the Phone with no 3.5mm output and claim HiRes audio ?

 

[Jimbob54]

That makes sense . Dolby Atmos is just software( digital) processing like a system wide equalizer and not any part of HiRes hardware .

Now , how do they even get Analog audio out of the Phone with no 3.5mm output and claim HiRes audio ?

Have a read of the apple lossless threads. Quite a bit of discussion on hardware requirements /limitations for it. Not straightforward!