Dolby Pro Logic is a surround sound processing technology made by, as the name suggests, Dolby Laboratories. It transforms, via encoding and decoding, ordinary soundtracks and stereo content into full-range surround sound retaining all the quality and subtleties of the original audio. It is designed to facilitate the more engaging experience of surround sound.
Check in the menu of the av receiver, it should have a setting for surround sound DTS and/or Dolby Pro-Logic. The program has to be made in surround for you to get true surround in your home.
Dolby Labs started in the audio industry as a noise reduction specialist. This was during the era of tape based analog recording when one of the big issues was tape noise. The noise could be heard as a background hiss. Dolby's early products were noise reduction hardware that could be used during the recording and playback process to reduce the noise. It was used in virtually all domestic and professional tape machines as well as film soundtracks. Movies that used the technology normally credit Dolby with the double D logo and the "Dolby Stereo" text. The original noise reduction processes are almost obsolete with the advent of digital recording (no tape means no tape noise). Dolby have since moved into other forms of audio processing, surround sound in particular. Movies of today no longer carry the DOlby Stereo credit but Dolby Surround credits instead.
Dolby 5.1 is a multi-channel audio format. Basically meaning, it's surround sound. There is a Left, Centre, Right, Left Surround, Right Surround and LFE (Sub) Speaker. Dolby 2.0 is simply 2 speakers, Left and Right. Similar to the Stereo sound you get from your TV. The Dolby bit means it has been compressed and encoded using Dolby technolgies, normally AC3.
Unlike the old Dolby Pro Logic Surround, Dolby Digital 5.1 and 7.1 have full frequency response abilities for all surround channels. In reality, most sound engineers limit the frequencies sent to the rear and surround speakers since the typical home setup has smaller speakers in these positions. Of course, the LFE channel is limited to 100 to 150Hz for true sub bass operation, but can be pressed into service to provide low frequencies to compensate for small left and right front speakers.
The addition of two more speakers normally placed in the back of the room facing the screen.
If the receiver contains the first edition of Dolby Pro Logic it will not work with Dolby 5.1. If it contains Dolby Pro Logic II or newer technology it will be backwards compatible.
If you get a nice receiver, such as a high-end Sony, you'll be able to play the Dolby Pro Logic IIx codec, as long as you have reasonable speakers.
HU-650 RDS, Dolby Pro Logic, CD
The AVR is an AV receiver. It was first introduced as a common soundtrack format by the Dolby Pro Logic company.
Some DVD's have a stereo 2-channel mix (Dolby Digital 2.0), but none feature a Dolby Surround or Pro Logic Surround option in the menus. This is because all DVD players can submix the 5.1 Dolby Digital track and output a Dolby Pro Logic Surround signal through the analog 2-channel outputs.
The Sony Bravia model DAV-HDX589W supports the following decoders built in the Dolby Pro Logic II, Dolby Digital and a DTS decoder.
DTS (digital theater sound) and Dolby Pro-Logic are two but there may be others.
Dolby Pro Logic (and Pro Logic II) are audio postprocesses that take 2-channel (stereo) sound and "convert" it into six channels. The resulting channels are Left, Center, Right, Left Surround, and Right Surround with a Low Frequency Effects channel (LFE). This configuration is also called 5.1.In the case of headphones, there may be multiple speakers for each ear, but for all intents and purposes we can consider them as having a "Left" speaker and a "Right" speaker.The Astro A40 headphones, has an additional postprocessing stage called "Dolby Headphone". This technology takes multichannel sound (5.1, discussed above) and virtualizes it so that the content may be reproduced over headphones. The result should sound like you are listening to 6 different speakers at once.The "underwater" sound you mention is simply the artifacts associated with the virtualization process. Some people enjoy the immersive sound Dolby Headphone and Pro Logic provides, and some people don't.
Logic Pro is a digital music workstation used for the production of muisc, while Logic Studio, which is now discontinued, was a suite of music production apps, including Logic Pro, Mainstage and other applications.
The Phillips HTS3151D/37 is a great but affordable surround sound system. For only $230($110 for used), this system comes with 300 watts of power, 5.1 speakers, Dolby digital and Pro Logic II surround sound, DivX Pro certified, iPod dock, and USB slots.
Any music can be made from using Logic Pro. Logic Pro is a software that allows you to write music from your computer.
No it Is not