Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
PDAudio: a recording system for PDA, laptop and desktop
Posted on 14-Apr-2003 18:34 | Tags Filed under: News


PDAudio: a recording system for PDA, laptop and desktop
PDAudio is a system of inexpensive hardware and software components you can select among to assemble a very compact recorder that meets your needs.

The centerpiece of the system is PDAudio-CF, a Type I (extended) Compact Flash S/PDIF interface with optical and coaxial inputs. PDAudio-CF can be mounted in PDA hosts that run Windows CE/Pocket PC 2002 or Linux (such as HP/Compaq's iPAQ), or used with laptop and desktop computers running Linux, Windows 2000 or Windows XP.

The PDA-based PDAudio will operate on rechargeable batteries for more than enough time to record a concert, and be able to quickly transfer audio data to a computer (PC or Mac) via removable solid-state memory cards (currently available in sizes up to 4 GB from Lexar), removable PC Card (currently up to 5 GB from Toshiba) and CF Card (currently 1 GB and up to 4 GB from Hitachi/IBM come Fall '03) hard disk drives, high capacity 2.5" hard drives (40 GB or more) using the PC Card interface, and via wired and wireless local area networks.

The PDA, PDAudio-CF interface, CF storage cards all fit together in one compact package, using a dual CF (or PC Card) expansion pack.

The recorder is be able to record in both single channel and dual channel modes, with sixteen, eighteen, twenty or twenty-four bit word widths, and data rates from 32 KiloSamples/second up to 192 KS/s (32, 44.1, 48, 88.2, 96, 176.4 and 192 KS/s). (Note that even though the PDAudio-CF supports sampling rates to 192 KS/s, some PDAs currently only support sampling rates to 96 KS/s. Almost all desktop and laptop PCs will support 192 KS/s.)

At 96 KS/s PDAudio-CF draws only 45 mA and so has minimal impact on your PDA's operating time per battery charge. (Various models of iPAQs are available with 1000, 1400 and 2200 mAh battery packs, and some of the CF/PC Card expansion packs provide still more battery capacity).

It has two LED indicators: one to indicate that it's seeing a valid S/PDIF data stream and another under the software application's control. The second LED flashed at various rates and can be used to signal sample rate, media-fullness warnings and other information.

PDAudio-CF will accept digital audio data from a wide variety of outboard units, essentially any device that uses an S/PDIF coaxial or optical interface. These include microphone pre-amplifiers/A-to-D convertors (e.g., our Mic2496, Lunatec's V3, M-Audio's Duo), CD players/recorders, DAT players/recorders, hard disk recorders (like the Alesis Masterlink), and digital PC & Mac sound cards. Input is via a 3.5mm (1/8-inch) jack for both optical and coaxial S/PDIF input, selectable via software.

In a laptop/desktop-based recorder, PDAudio-CF will provide a bit-for-bit accurate S/PDIF interface at up to 192 KS/s for use with most popular audio software applications. A WDM driver for Windows XP and Windows 2000 is included.

The PDAudio-CF driver source code, user guide and programming is freely available to third-party audio software developers.


More information: http://www.core-sound.com/HighResRecorderNews...




comments powered by Disqus


Trending now »

Hot discussions in our forums right now:

Getting asked for Money/Food
Created by Starscream122, last reply by Rikkitic on 19-Jan-2018 10:32 (82 replies)
Pages... 4 5 6


Debt Consolidation
Created by networkn, last reply by tdgeek on 19-Jan-2018 15:22 (126 replies)
Pages... 7 8 9


Best place & price to get higher end car tyres? (Michelin/GoodYear etc)
Created by Item, last reply by martyyn on 19-Jan-2018 15:33 (43 replies)
Pages... 2 3


Slingshot drops gig prices to $99
Created by howdystranger, last reply by myfullflavour on 19-Jan-2018 10:59 (29 replies)
Pages... 2


What is the New Cable Going to Mean for NZ?
Created by Pumpedd, last reply by PhantomNVD on 21-Jan-2018 01:35 (36 replies)
Pages... 2 3


USA Rental Car Insurance
Created by kryptonjohn, last reply by kryptonjohn on 18-Jan-2018 09:02 (23 replies)
Pages... 2


WTB: HP EliteBook 8760w WiFi Card
Created by MartinGZ, last reply by Lias on 17-Jan-2018 22:44 (11 replies)

PC Harware limiting Fibre Speed??
Created by RB55, last reply by yitz on 20-Jan-2018 17:31 (21 replies)
Pages... 2