pippin wrote: > The iPhones, even the older ones, have absolutely no issue with > transcoding. They have powerful floating point processors and vector > units for media processing. In the past, they used to run codecs on a > DSP but they no longer do this because they found that it performs > better on the main processor. > > You can even do things like FFT and stuff in real time allowing you to > do processing tasks like room correction in real time. > > Internally, iOS supports sample rates of up to 192 KHz with 32 bits and > even with a lot of channels (64 IIRC), all of that will be resampled in > the output stage to whatever you need (up to 96 kHz, 24 bits is > supported through USB). > > These are really powerful media processing devices, you can't compare > them to NASs, RPis or the like, the latest ones match or even exceed > most desktop PCs in media processing performance (if you exclude GPUs or > more powerful audio cards), especially since their multitasking model is > still far superior to what Windows does. They are much closer to game > consoles in this respect. > > The old iPeng versions on old iPhones (3GS) did resample audio actually > twice when playing HD audio. It got resampled to 44.1/16 internally and > then back up to 48/24 for digital outputs. Nobody ever noticed :)
Wow i'm a bit surprised that they put that kind of processing power into them . Just remembering my iPad 1 . Vector stuff makes sense as you jiggle your screen back and forth and call up apps all the time on the display . Butr other things are so very slow on them and they are crash prone and run out of memory a lot , and my iPhone 4 is not really fast safari is like tar on it for example , so i'm really surprised that there is such a media engine in them ? Its clearly over performing compared to the rest of it . My iPad air is a bit better but it still crashes sometimes , and they are still not capable of running flash so they cant fully replace browsing via a PC ... But i'm happy that they reached the point of diminishing returns with audio performance :) you simply dont need better from a phone . Now they can get them even better in other aspects . that iPhone 6 sure looks tempting , but i'll wait on to next one that bending stuff cant have that professionally, I need a phone that a bit tougher hopefully cheaper sapphire glass is coming to the phone market . -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad1 with iPengHD & SqueezePad (in storage SB3, reciever ,controller ) server HP proliant micro server N36L with ClearOS Linux http://people.xiph.org/~xiphmont/demo/neil-young.html ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=102270
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