Hi Gary. The formats CD, DVD HD and blue Ray are all different as they all use different lasers to read a disc. The wavelength of a laser beam determines how accurately it can read data. So, a blue ray laser is much more smaller a wavelength than a CD laser and so can read a lot more data in the same physical space. There are also differences in the density of data stored on the discs so a disc produced for DVD will hold more data in the same physical space than could be stored on a traditional CD.
This is very much a layman's description but hope it helps explain the differences. Kevin E-mail: [EMAIL PROTECTED] ----- Original Message ----- From: "Gary Wood" <[EMAIL PROTECTED]> To: "PC Audio Discussion List" <pc-audio@pc-audio.org> Sent: Friday, November 09, 2007 4:25 PM Subject: Re: MP3's DVD's and Bit Rates. > Thanks, Jerry! What makes a DVD hold more material, since DVD's are the > same size as CD's? > ----- Original Message ----- > From: "Jerry Richer" <[EMAIL PROTECTED]> > To: "PC Audio Discussion List" <pc-audio@pc-audio.org> > Sent: Saturday, November 08, 2003 11:37 AM > Subject: Re: MP3's DVD's and Bit Rates. > > >> DVD's have nothing to do with any king of file format. They just >> hold >> much more data than a CD. An MP3 or Wave file on a CD or DVD is the same >> size. >> >> Jerry >> >> Chirp|Chirp|Chirp: It's the Bat, Chirping Bat .Com >> ! Edirol R-09: high quality portable stereo Secure Digital Audio recorder >> with USB, $359.00, includes delivery within the USA, add $35.00 outside, >> www.chirpingbat.com/edirol.shtml >> ! DEC-TALK USB: $650.00, includes delivery within the USA, add $35 >> outside, >> www.chirpingbat.com/dectalkusb.shtml >> ! J-Say 4.0 without Naturally Speaking: $650.00, >> www.chirpingbat.com/j-say.shtml >> ! Window Eyes 6.0: $895, includes delivery in the USA, >> www.ChirpingBat.Com/windoweyes.shtml >> ! Triple Talk: USB $450, PCI $350, includes delivery within the USA, add >> $35 >> outside, www.ChirpingBat.Com/tripletalk.shtml >> ! Sound Forge 9.0 with CD Architect 5.2 and Noise Reduction 2.0: $250, >> includes delivery within the USA, add $35 outside, >> www.ChirpingBat.Com/soundforge.shtml >> ! We accept PayPal All Major Credit Cards, money orders, checks, wire >> transfers, etc. >> We ship Internationally. Click to convert our prices into your currency >> at: >> www.xe.com/ucc/full.shtml >> >> Reach BA Software in the United States at: >> Phone: 1-518-572-6092 weekdays, 1-518-359-8538 other, Email: >> [EMAIL PROTECTED], Skype name adirondackbat, WWW: www.ChirpingBat.Com >> >> >> >> Audio List Help, Guidelines, Archives and more... >> http://www.pc-audio.org >> >> To unsubscribe from this list, send a blank email to: >> [EMAIL PROTECTED] >> > > > > > Audio List Help, Guidelines, Archives and more... > http://www.pc-audio.org > > To unsubscribe from this list, send a blank email to: > [EMAIL PROTECTED] > Audio List Help, Guidelines, Archives and more... http://www.pc-audio.org To unsubscribe from this list, send a blank email to: [EMAIL PROTECTED]
