Multitasking: A2DP + GPRS

[newbro]

Ok I currently own a Herme and it serves me well for the last 2 years as a phone and music player. Pair with an iTech R35 and mortplayer it is really a great combo.

The only problem is when A2DP is active it's almost like it takes up 2/3 of the cpu time (Hermes has a Samsung 400mhz processor i think...), which makes the rest of the phone operation totally sluggish and irresponsive. Recently I join a data plan and it's almost nighmare to try and surf the web via GPRS when listening to music at the same time.

So I'm in the market for a new phone, all I want is a windows mobile phone that doesn't slow down as much when using A2DP. Perhaps you guys know a few so please enlight me as I haven't been that active in the phone market lately:p

[branko.savic]

Ok I currently own a Herme and it serves me well for the last 2 years as a phone and music player. Pair with an iTech R35 and mortplayer it is really a great combo.

The only problem is when A2DP is active it's almost like it takes up 2/3 of the cpu time (Hermes has a Samsung 400mhz processor i think...), which makes the rest of the phone operation totally sluggish and irresponsive. Recently I join a data plan and it's almost nighmare to try and surf the web via GPRS when listening to music at the same time.

So I'm in the market for a new phone, all I want is a windows mobile phone that doesn't slow down as much when using A2DP. Perhaps you guys know a few so please enlight me as I haven't been that active in the phone market lately:p

Check out HTC Touch Pro!

[newbro]

yeah actually I am quite interested in the touch pro but only little is known about it... i guess i'll wait and see when it eventually comes out

[Menneisyys]

Ok I currently own a Herme and it serves me well for the last 2 years as a phone and music player. Pair with an iTech R35 and mortplayer it is really a great combo.

The only problem is when A2DP is active it's almost like it takes up 2/3 of the cpu time (Hermes has a Samsung 400mhz processor i think...), which makes the rest of the phone operation totally sluggish and irresponsive. Recently I join a data plan and it's almost nighmare to try and surf the web via GPRS when listening to music at the same time.

So I'm in the market for a new phone, all I want is a windows mobile phone that doesn't slow down as much when using A2DP. Perhaps you guys know a few so please enlight me as I haven't been that active in the phone market lately:p


as has been explaind in several of my articles, the (old) Samsung CPU uses >50% CPU with A2DP. the situation is FAR better with ALL the other CPU platforms. That is, you won't experience such lowdowns with any non-Samsungbased PDA's.

[schizo]

Just to add to Menneissyys's.

I own a Hermes and also a Kaiser, and they both have different CPU platform. I got what you got on Hermes, playing music on AADP. But on my Kaiser, it only took some 10-15% of CPU time, that's for MP3s. I can even play video music and AADP streaming into my Kaiser and only chews 15-22% of CPU time.

But I don't know why it's CPU bound. Is it possible that they have different instruction sets or features? Since I believe the OS is the same, also the bluetooth stack.

[Menneisyys]

Just to add to Menneissyys's.

I own a Hermes and also a Kaiser, and they both have different CPU platform. I got what you got on Hermes, playing music on AADP. But on my Kaiser, it only took some 10-15% of CPU time, that's for MP3s. I can even play video music and AADP streaming into my Kaiser and only chews 15-22% of CPU time.

But I don't know why it's CPU bound. Is it possible that they have different instruction sets or features? Since I believe the OS is the same, also the bluetooth stack.

see my Samsung & chipset-related articles - the old Samsung platform is by far the least advanced, multimedia-wise. It's even WAY worse than the 9dated) TI OMAP 850 and Xscale PXA255 platform. This is why it uses way more CPU to encode A2DP on the Samsung than on any other, widely used platform