HE-AAC (V1), AAC (16 to 320 Kbps), protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, AIFF, and WAV Dolby Digital 5. Straight from Apple Support - Specifications (for the 3G Apple TV): Most sound cards offer better overall audio quality, especially for analog, over the AX.īTW, not the appropriate forum, but is the situation any different on the (current) Apple TV? I assume by "MSWin" you are referring to the sound card used in your PC or built-in the PC's motherboard. Priced at 99, it offers dual-band 802.11n Wi-Fi along with AirPlay for wireless music. If so, is there any reason to expect that this would give better quality than when I let MSWin take care of it in its output path? Apple's AirPort Express is its entry-level AirPort base station, designed to be easy to use and affordable. iTunes digital audio (AC3 or DTS) is output in its raw format out the AX's optical digital port at whatever sample rate it was recorded at. The resampling happens with iTunes to be able to stream via AirPlay. In these cases, the AX would first decode the stream, and then, output the raw AC3 or DTS stream via its optical digital audio port.ĭo I understand correctly that "standard" (read, mono or stereo?) content always gets resampled to 44.1kHz, even if the AX is connected via its optical output only? If iTunes is playing back a digital multichannel file format like AC3 (Dolby Digital) or DTS, those bitstreams (like the lossy formats) are wrapped in Apple's Lossless compression, encrypted, and then, streamed to the AX. When you play 48 or 92 kHz data, iTunes sample rate converts the data in real time (to 44.1 kHz) prior to sending it to the AX. The AX only functions at a 44.1kHz sample rate. The AX decrypts the stream, decodes it, and outputs it in either analog format or as a digital PCM stream.įor analog audio, the AirPort Express Base Station (AX) uses a 16-bit Texas Instruments PCM2705 DAC. That stream is compressed using Apple's Lossless Compression (via a QuickTime codec), encrypted, and then, streamed (via AirTunes/AirPlay) to the AX. When iTunes plays back standard audio content (AAC, MP3, audiobooks, Internet music streams, etc., it decompresses those file formats and creates what's essentially a raw, uncompressed audio stream. I am wondering if i need to actually set up the machine before i evaluate what color the LED is or whether it is flashing.ITunes does most of the work. I am thinking to simply remove my TIME CAPSULE from everything so the data cannot get corrupted and so i can SET UP this device but i am not sure if i am simply wasting my time.ĭoes that question make sense? or was it answered earlier and i missed it? I am under the impression i need to do a FULL SETUP before i get the green light and that i won't get a green light until i set it up on the network. The other is for a wired connection to a modem or an Ethernet-based network. One is for connection to a PC, Ethernet hub, or a networked printer. Airport Express Connectivity The AirPort Express has two Ethernet/LAN ports. So i have not gone through the full setup. The AirPort Express is 3.85-inches wide, by 3.85 inches deep and about 1-inch high. In the first image i posted you can see the prompt where it says it is will REPLACE my time machine and the "base station" (associated with my TIME CAPSULE BACKUP) "will be reset to default settings". i don't want to do something dumb with my data so i am trying to ask questions first. i had to STOP setup because it is giving me a prompt that is confusing to me with respect to my TIME CAPSULE backup. What i am trying to ask is that i have NOT gone through a setup for the device. anyway, i understand that the solid amber (in this case it is now blinking amber) is not working. for some reason i only see it in my email but not on the forum.
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